64c125a4a093f195920006801421382a 324039.pdf f9568642b973375adc98d9dbdf04c068c93135d7 324039.pdf 0209610cb4d8a95eb585702829815df35aa485c4a869e690a736788f7f378c20 324039.pdf Title: Three-year survival follow-up of patients with gastrointestinal cancer treated during the COVID-19 pandemic in Spain: data from the PANDORA-TTD20 study Subject: DOI: 10.1093/oncolo/oyae300 The Oncologist, Volume. 30, Issue. 8, 16 November 2024 Abstract Introduction: The initial SARS-CoV-2 pandemic wave in Spain in 2020 precipitated significant paradigm shifts in gastrointestinal oncology patient management. This study captures the "Zeitgeist" of this period by analyzing adaptive strategies, treatment modifications, and survival outcomes, leveraging a 3-year follow-up perspective to extract insights from this unprecedented experience. Methods: We conducted a multicenter, retrospective cohort study utilizing the RETUD-TTD registry, encompassing 703 patients across 19 Spanish centers in April 2020. We evaluated alterations in clinical practice, therapeutic approaches, coronavirus disease 2019 (COVID-19)-related impacts, and patient survival. A Bayesian hierarchical model was employed to identify potential regional-specific frailties. Results: The peak of the pandemic in April 2020 catalyzed substantial shifts in oncological care delivery. Outpatient consultations decreased by 13%, with a notable selection bias toward cases with more favorable prognostic indicators. Multidisciplinary tumor board discussions were significantly curtailed (eg, mean monthly colorectal cancer cases discussed was reduced from 40 to 23), compromising qualitative care measures. This occurred concurrently with an average of over 3 oncologists per center on medical leave. Contrary to initial concerns, the healthcare system demonstrated remarkable resilience. The majority of patients received standard-of-care therapies with regulatory approval, albeit with regimen modifications in 15% of cases. These adaptations included extended dosing intervals, dose intensity modulations, and transitions to oral formulations while maintaining unexpectedly stable long-term survival outcomes. The Bayesian frailty model detected minimal unmeasured prognostic factors related to geographic location, and the type of pandemic-induced adaptation did not significantly impact survival. The model revealed that coronavirus disease 2019's impact was less pronounced than other core prognostic variables. Conclusions: The decentralized Spanish healthcare system exhibited substantial robustness in managing pre-pandemic diagnosed gastrointestinal malignancies, despite asymmetrical, and occasionally severe organizational disruptions. The insights gleaned from this experience could inform future crisis preparedness strategies and optimize care provision during subsequent public health emergencies. Author: Pilar García-Alfonso Creator: Adobe InDesign 15.1 (Windows) Producer: Adobe PDF Library 15.0; modified using iTextSharp.LGPLv2.Core 3.7.4.0 CreationDate: Thu Aug 28 14:51:41 2025 CEST ModDate: Wed Jan 14 09:34:21 2026 CET Custom Metadata: no Metadata Stream: yes Tagged: yes UserProperties: no Suspects: no Form: none JavaScript: no Pages: 10 Encrypted: no Page size: 595.276 x 782.362 pts Page rot: 0 File size: 1918298 bytes Optimized: no PDF version: 1.4 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- FCXJKT+UniversLTStd-CnObl Type 1C WinAnsi yes yes yes 86 0 FKVJKT+UniversLTStd-Cn Type 1C WinAnsi yes yes yes 87 0 OLDBGB+UniversLTStd-BoldCn Type 1C WinAnsi yes yes yes 88 0 CWCCUZ+UniversLTStd-Bold Type 1C Custom yes yes yes 89 0 YLAZQH+MyriadPro-Bold Type 1C WinAnsi yes yes yes 90 0 ORVRGB+MyriadPro-Regular Type 1C WinAnsi yes yes yes 91 0 HJJBMP+UniversLTStd-Light Type 1C Custom yes yes yes 92 0 YRSPQH+SabonLTStd-Roman Type 1C Custom yes yes yes 93 0 HKXUVV+ArialMT TrueType WinAnsi yes yes no 1 0 AAKMSD+UniversLTStd-Obl Type 1C WinAnsi yes yes yes 130 0 JYYOOL+UniversLTStd Type 1C WinAnsi yes yes yes 131 0 HDXCMP+SabonLTStd-Italic Type 1C WinAnsi yes yes yes 155 0 EZDAWV+SabonLTStd-Bold Type 1C WinAnsi yes yes yes 156 0 ZFMREF+SabonLTStd-BoldItalic Type 1C WinAnsi yes yes yes 157 0 ORCDGB+UniversLTStd-LightObl Type 1C WinAnsi yes yes yes 203 0 ZSPMEF+GandhariUnicode-Roman Type 1C Custom yes yes yes 326 0 Jhove (Rel. 1.28.0, 2023-05-18) Date: 2026-01-15 04:12:09 CET RepresentationInformation: 324039.pdf ReportingModule: PDF-hul, Rel. 1.12.4 (2023-03-16) LastModified: 2026-01-14 09:46:09 CET Size: 1918298 Format: PDF Version: 1.4 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf Profile: Tagged PDF PDFMetadata: Objects: 1914 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: ViewerPreferences: HideToolbar: false HideMenubar: false HideWindowUI: false FitWindow: false CenterWindow: false DisplayDocTitle: true NonFullScreenPageMode: UseNone Direction: L2R ViewArea: CropBox ViewClip: CropBox PrintArea: CropBox PageClip: CropBox PageLayout: OneColumn PageMode: UseOutlines Language: en-US Outlines: Item: Title: Three-year survival follow-up of patients with gastrointestinal cancer treated during the COVID-19 pandemic in Spain: data from the PANDORA-TTD20 study Children: Item: Title: Introduction Item: Title: Method Item: Title: Results Children: Item: Title: Patient care during the pandemic Item: Title: Organizational changes and status of centers Item: Title: Survival-based outcomes and frailties Item: Title: Discussion Item: Title: Acknowledgments Item: Title: References Info: Title: Three-year survival follow-up of patients with gastrointestinal cancer treated during the COVID-19 pandemic in Spain: data from the PANDORA-TTD20 study Author: Pilar García-Alfonso Subject: DOI: 10.1093/oncolo/oyae300 The Oncologist, Volume. 30, Issue. 8, 16 November 2024 Abstract Introduction: The initial SARS-CoV-2 pandemic wave in Spain in 2020 precipitated significant paradigm shifts in gastrointestinal oncology patient management. This study captures the "Zeitgeist" of this period by analyzing adaptive strategies, treatment modifications, and survival outcomes, leveraging a 3-year follow-up perspective to extract insights from this unprecedented experience. Methods: We conducted a multicenter, retrospective cohort study utilizing the RETUD-TTD registry, encompassing 703 patients across 19 Spanish centers in April 2020. We evaluated alterations in clinical practice, therapeutic approaches, coronavirus disease 2019 (COVID-19)-related impacts, and patient survival. A Bayesian hierarchical model was employed to identify potential regional-specific frailties. Results: The peak of the pandemic in April 2020 catalyzed substantial shifts in oncological care delivery. Outpatient consultations decreased by 13%, with a notable selection bias toward cases with more favorable prognostic indicators. Multidisciplinary tumor board discussions were significantly curtailed (eg, mean monthly colorectal cancer cases discussed was reduced from 40 to 23), compromising qualitative care measures. This occurred concurrently with an average of over 3 oncologists per center on medical leave. Contrary to initial concerns, the healthcare system demonstrated remarkable resilience. The majority of patients received standard-of-care therapies with regulatory approval, albeit with regimen modifications in 15% of cases. These adaptations included extended dosing intervals, dose intensity modulations, and transitions to oral formulations while maintaining unexpectedly stable long-term survival outcomes. The Bayesian frailty model detected minimal unmeasured prognostic factors related to geographic location, and the type of pandemic-induced adaptation did not significantly impact survival. The model revealed that coronavirus disease 2019's impact was less pronounced than other core prognostic variables. Conclusions: The decentralized Spanish healthcare system exhibited substantial robustness in managing pre-pandemic diagnosed gastrointestinal malignancies, despite asymmetrical, and occasionally severe organizational disruptions. The insights gleaned from this experience could inform future crisis preparedness strategies and optimize care provision during subsequent public health emergencies. Creator: Adobe InDesign 15.1 (Windows) Producer: Adobe PDF Library 15.0; modified using iTextSharp.LGPLv2.Core 3.7.4.0 CreationDate: Thu Aug 28 15:21:41 CEST 2025 ModDate: Wed Jan 14 09:34:21 CET 2026 Trapped: False ID: 0xbd5cee61f878c9dce962478b10f5eb16, 0x11981e6ab21e4f4c7cbcabe2838e6336 Filters: FilterPipeline: FlateDecode FilterPipeline: DCTDecode Images: Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 120 ImageHeight: 43 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 12 ImageHeight: 9 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 88 ImageHeight: 55 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 45 ImageHeight: 36 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 118 ImageHeight: 54 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 38 ImageHeight: 94 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 27 ImageHeight: 42 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 18 ImageHeight: 11 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 54 ImageHeight: 172 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 44 ImageHeight: 87 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 63 ImageHeight: 99 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 44 ImageHeight: 57 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 4 ImageHeight: 4 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 160 ImageHeight: 91 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 55 ImageHeight: 92 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 6 ImageHeight: 8 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 17 ImageHeight: 6 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 30 ImageHeight: 13 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 46 ImageHeight: 52 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 11 ImageHeight: 11 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 1 ImageHeight: 300 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 1 ImageHeight: 300 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 15 ImageHeight: 26 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/jpg CompressionScheme: JPEG ImageWidth: 7 ImageHeight: 3 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 33 ImageHeight: 29 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 2 ImageHeight: 3 ColorSpace: CMYK BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 30 ImageHeight: 34 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 10 ImageHeight: 36 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 78 ImageHeight: 68 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Image: NisoImageMetadata: FormatName: image/png ImageWidth: 38 ImageHeight: 61 ColorSpace: palette color BitsPerSample: 8 BitsPerSampleUnit: integer Filter: FlateDecode Intent: RelativeColorimetric Decode: 0, 255 Name: X Fonts: Type1: Font: BaseFont: AAKMSD+UniversLTStd-Obl FontSubset: true FirstChar: 32 LastChar: 116 FontDescriptor: FontName: AAKMSD+UniversLTStd-Obl Flags: Nonsymbolic, Italic FontBBox: -174, -272, 1145, 947 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: JYYOOL+UniversLTStd FontSubset: true FirstChar: 32 LastChar: 122 FontDescriptor: FontName: JYYOOL+UniversLTStd Flags: Nonsymbolic FontBBox: -168, -250, 992, 947 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: ZSPMEF+GandhariUnicode-Roman FontSubset: true FirstChar: 31 LastChar: 31 FontDescriptor: FontName: ZSPMEF+GandhariUnicode-Roman Flags: Serif, Nonsymbolic FontBBox: -752, -250, 1779, 944 FontFile3: true EncodingDictionary: BaseEncoding: WinAnsiEncoding Differences: true ToUnicode: true Font: BaseFont: ORCDGB+UniversLTStd-LightObl FontSubset: true FirstChar: 78 LastChar: 116 FontDescriptor: FontName: ORCDGB+UniversLTStd-LightObl Flags: Nonsymbolic, Italic FontBBox: -151, -274, 1144, 957 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: FCXJKT+UniversLTStd-CnObl FontSubset: true FirstChar: 32 LastChar: 116 FontDescriptor: FontName: FCXJKT+UniversLTStd-CnObl Flags: Nonsymbolic, Italic FontBBox: -172, -270, 1064, 989 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: FKVJKT+UniversLTStd-Cn FontSubset: true FirstChar: 32 LastChar: 250 FontDescriptor: FontName: FKVJKT+UniversLTStd-Cn Flags: Nonsymbolic FontBBox: -166, -250, 1000, 989 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: OLDBGB+UniversLTStd-BoldCn FontSubset: true FirstChar: 32 LastChar: 121 FontDescriptor: FontName: OLDBGB+UniversLTStd-BoldCn Flags: Nonsymbolic FontBBox: -83, -250, 1000, 969 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: CWCCUZ+UniversLTStd-Bold FontSubset: true FirstChar: 31 LastChar: 243 FontDescriptor: FontName: CWCCUZ+UniversLTStd-Bold Flags: Nonsymbolic FontBBox: -167, -250, 995, 938 FontFile3: true EncodingDictionary: BaseEncoding: WinAnsiEncoding Differences: true ToUnicode: true Font: BaseFont: YLAZQH+MyriadPro-Bold FontSubset: true FirstChar: 42 LastChar: 42 FontDescriptor: FontName: YLAZQH+MyriadPro-Bold Flags: Nonsymbolic FontBBox: -163, -250, 1256, 989 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: ORVRGB+MyriadPro-Regular FontSubset: true FirstChar: 42 LastChar: 42 FontDescriptor: FontName: ORVRGB+MyriadPro-Regular Flags: Nonsymbolic FontBBox: -157, -250, 1126, 952 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: HDXCMP+SabonLTStd-Italic FontSubset: true FirstChar: 32 LastChar: 121 FontDescriptor: FontName: HDXCMP+SabonLTStd-Italic Flags: Serif, Nonsymbolic, Italic FontBBox: -146, -228, 1059, 927 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: HJJBMP+UniversLTStd-Light FontSubset: true FirstChar: 31 LastChar: 243 FontDescriptor: FontName: HJJBMP+UniversLTStd-Light Flags: Nonsymbolic FontBBox: -151, -250, 1000, 957 FontFile3: true EncodingDictionary: BaseEncoding: WinAnsiEncoding Differences: true ToUnicode: true Font: BaseFont: EZDAWV+SabonLTStd-Bold FontSubset: true FirstChar: 32 LastChar: 121 FontDescriptor: FontName: EZDAWV+SabonLTStd-Bold Flags: Serif, Nonsymbolic FontBBox: -163, -228, 1000, 968 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true Font: BaseFont: YRSPQH+SabonLTStd-Roman FontSubset: true FirstChar: 29 LastChar: 248 FontDescriptor: FontName: YRSPQH+SabonLTStd-Roman Flags: Serif, Nonsymbolic FontBBox: -165, -228, 1000, 944 FontFile3: true EncodingDictionary: BaseEncoding: WinAnsiEncoding Differences: true ToUnicode: true Font: BaseFont: ZFMREF+SabonLTStd-BoldItalic FontSubset: true FirstChar: 78 LastChar: 78 FontDescriptor: FontName: ZFMREF+SabonLTStd-BoldItalic Flags: Serif, Nonsymbolic, Italic FontBBox: -147, -238, 1080, 955 FontFile3: true Encoding: WinAnsiEncoding ToUnicode: true TrueType: Font: BaseFont: HKXUVV+ArialMT FontSubset: true FirstChar: 32 LastChar: 121 FontDescriptor: FontName: HKXUVV+ArialMT Flags: Nonsymbolic FontBBox: -664, -324, 2000, 1039 FontFile2: true Encoding: WinAnsiEncoding XMP: application/pdf Three-year survival follow-up of patients with gastrointestinal cancer treated during the COVID-19 pandemic in Spain: data from the PANDORA-TTD20 study DOI: 10.1093/oncolo/oyae300 The Oncologist, Volume. 30, Issue. 8, 16 November 2024 Abstract Introduction: The initial SARS-CoV-2 pandemic wave in Spain in 2020 precipitated significant paradigm shifts in gastrointestinal oncology patient management. This study captures the "Zeitgeist" of this period by analyzing adaptive strategies, treatment modifications, and survival outcomes, leveraging a 3-year follow-up perspective to extract insights from this unprecedented experience. Methods: We conducted a multicenter, retrospective cohort study utilizing the RETUD-TTD registry, encompassing 703 patients across 19 Spanish centers in April 2020. We evaluated alterations in clinical practice, therapeutic approaches, coronavirus disease 2019 (COVID-19)-related impacts, and patient survival. A Bayesian hierarchical model was employed to identify potential regional-specific frailties. Results: The peak of the pandemic in April 2020 catalyzed substantial shifts in oncological care delivery. Outpatient consultations decreased by 13%, with a notable selection bias toward cases with more favorable prognostic indicators. Multidisciplinary tumor board discussions were significantly curtailed (eg, mean monthly colorectal cancer cases discussed was reduced from 40 to 23), compromising qualitative care measures. This occurred concurrently with an average of over 3 oncologists per center on medical leave. Contrary to initial concerns, the healthcare system demonstrated remarkable resilience. The majority of patients received standard-of-care therapies with regulatory approval, albeit with regimen modifications in 15% of cases. These adaptations included extended dosing intervals, dose intensity modulations, and transitions to oral formulations while maintaining unexpectedly stable long-term survival outcomes. The Bayesian frailty model detected minimal unmeasured prognostic factors related to geographic location, and the type of pandemic-induced adaptation did not significantly impact survival. The model revealed that coronavirus disease 2019's impact was less pronounced than other core prognostic variables. Conclusions: The decentralized Spanish healthcare system exhibited substantial robustness in managing pre-pandemic diagnosed gastrointestinal malignancies, despite asymmetrical, and occasionally severe organizational disruptions. The insights gleaned from this experience could inform future crisis preparedness strategies and optimize care provision during subsequent public health emergencies. © The Author(s) 2024. Published by Oxford University Press. Pilar García-Alfonso Paula Jimenez-Fonseca Javier Soto-Alsar Iosune Baraibar Cristina Santos Adelaida La Casta Ismael Ghanem Gema Pulido Cortijo Axel Mariño Méndez Roberto Pazo-Cid Ruth Vera Marcos Melián Julia Alcaide Begoña Graña David Páez Inmaculada Gallego Miriam Lobo Miguel Borregón Ana Fernández Montes Eva Martínez de Castro Alberto Carmona-Bayonas Enrique Aranda gastrointestinal cancer coronavirus disease 2019 Spain PANDORA-TTD20 RETUD registry spatial frailties. 2025-08-28T18:21:41+05:30 2026-01-14T08:34:21+00:00 2026-01-14T08:34:21+00:00 Adobe InDesign 15.1 (Windows) uuid:26e7c7ed-db35-4301-a413-6d25d59018bd xmp.did:62536b05-d23c-e441-8b83-3cf623a2daf6 xmp.id:96c19d24-84b3-744c-bccf-a8e8ba2654ab proof:pdf converted from application/x-indesign to application/pdf Adobe InDesign 15.1 (Windows) / 2025-08-28T18:21:41+05:30 xmp.iid:105a8537-44c0-3748-953d-a2820e34fa8c xmp.did:7970bc4a-0a68-574e-a1e1-58fa615fd822 xmp.did:62536b05-d23c-e441-8b83-3cf623a2daf6 default True Adobe PDF Library 15.0; modified using iTextSharp.LGPLv2.Core 3.7.4.0 False Pages: Page: Sequence: 1 Annotations: Annotation: Subtype: Link Rect: 151, 599, 155, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 157, 599, 159, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 161, 599, 165, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 292, 599, 296, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 298, 599, 301, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 397, 599, 400, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 488, 599, 491, 586 ActionDest: 33 Annotation: Subtype: Link Rect: 127, 584, 131, 571 ActionDest: 33 Annotation: Subtype: Link Rect: 229, 584, 233, 571 ActionDest: 33 Annotation: Subtype: Link Rect: 320, 584, 324, 571 ActionDest: 33 Annotation: Subtype: Link Rect: 435, 584, 439, 571 ActionDest: 33 Annotation: Subtype: Link Rect: 155, 569, 159, 556 ActionDest: 33 Annotation: Subtype: Link Rect: 255, 569, 258, 556 ActionDest: 33 Annotation: Subtype: Link Rect: 314, 569, 321, 556 ActionDest: 33 Annotation: Subtype: Link Rect: 403, 569, 410, 556 ActionDest: 33 Annotation: Subtype: Link Rect: 481, 569, 489, 556 ActionDest: 33 Annotation: Subtype: Link Rect: 122, 554, 129, 541 ActionDest: 33 Annotation: Subtype: Link Rect: 191, 554, 198, 541 ActionDest: 33 Annotation: Subtype: Link Rect: 308, 554, 315, 541 ActionDest: 33 Annotation: Subtype: Link Rect: 387, 554, 394, 541 ActionDest: 33 Annotation: Subtype: Link Rect: 487, 554, 494, 541 ActionDest: 33 Annotation: Subtype: Link Rect: 168, 539, 175, 526 ActionDest: 33 Annotation: Subtype: Link Rect: 175, 541, 189, 527 Annotation: Subtype: Link Rect: 313, 539, 320, 526 ActionDest: 33 Annotation: Subtype: Link Rect: 462, 539, 469, 526 ActionDest: 33 Annotation: Subtype: Link Rect: 469, 541, 483, 527 Annotation: Subtype: Link Rect: 127, 524, 131, 511 ActionDest: 33 Annotation: Subtype: Link Rect: 453, 180, 539, 170 Annotation: Subtype: Link Rect: 388, 57, 531, 48 Page: Sequence: 2 Annotations: Annotation: Subtype: Link Rect: 220, 432, 223, 422 ActionDest: 40 Annotation: Subtype: Link Rect: 225, 432, 228, 422 ActionDest: 40 Annotation: Subtype: Link Rect: 229, 410, 232, 400 ActionDest: 40 Annotation: Subtype: Link Rect: 234, 410, 237, 400 ActionDest: 40 Annotation: Subtype: Link Rect: 113, 399, 116, 389 ActionDest: 40 Annotation: Subtype: Link Rect: 117, 399, 120, 389 ActionDest: 41 Annotation: Subtype: Link Rect: 194, 388, 197, 378 ActionDest: 41 Annotation: Subtype: Link Rect: 199, 388, 202, 378 ActionDest: 41 Annotation: Subtype: Link Rect: 174, 366, 180, 356 ActionDest: 41 Annotation: Subtype: Link Rect: 136, 355, 139, 345 ActionDest: 40 Annotation: Subtype: Link Rect: 76, 333, 82, 323 ActionDest: 41 Annotation: Subtype: Link Rect: 255, 322, 261, 312 ActionDest: 41 Annotation: Subtype: Link Rect: 263, 322, 269, 312 ActionDest: 41 Annotation: Subtype: Link Rect: 198, 289, 204, 279 ActionDest: 41 Annotation: Subtype: Link Rect: 206, 289, 212, 279 ActionDest: 41 Annotation: Subtype: Link Rect: 141, 278, 147, 268 ActionDest: 41 Annotation: Subtype: Link Rect: 141, 267, 147, 257 ActionDest: 41 Annotation: Subtype: Link Rect: 68, 245, 74, 235 ActionDest: 41 Annotation: Subtype: Link Rect: 178, 234, 184, 224 ActionDest: 41 Annotation: Subtype: Link Rect: 185, 234, 191, 224 ActionDest: 41 Annotation: Subtype: Link Rect: 193, 234, 199, 224 ActionDest: 41 Annotation: Subtype: Link Rect: 196, 179, 202, 169 ActionDest: 41 Annotation: Subtype: Link Rect: 208, 157, 214, 147 ActionDest: 41 Annotation: Subtype: Link Rect: 201, 146, 207, 136 ActionDest: 41 Annotation: Subtype: Link Rect: 230, 124, 236, 114 ActionDest: 41 Annotation: Subtype: Link Rect: 238, 124, 244, 114 ActionDest: 41 Annotation: Subtype: Link Rect: 192, 91, 198, 81 ActionDest: 41 Annotation: Subtype: Link Rect: 346, 201, 352, 191 ActionDest: 41 Annotation: Subtype: Link Rect: 502, 113, 505, 103 ActionDest: 40 Annotation: Subtype: Link Rect: 366, 69, 372, 59 ActionDest: 41 Annotation: Subtype: Link Rect: 373, 69, 379, 59 ActionDest: 41 Annotation: Subtype: Link Rect: 529, 58, 535, 48 ActionDest: 41 Page: Sequence: 3 Annotations: Annotation: Subtype: Link Rect: 261, 708, 267, 697 ActionDest: 41 Annotation: Subtype: Link Rect: 118, 664, 124, 653 ActionDest: 41 Annotation: Subtype: Link Rect: 125, 664, 131, 653 ActionDest: 41 Annotation: Subtype: Link Rect: 133, 664, 139, 653 ActionDest: 41 Annotation: Subtype: Link Rect: 231, 609, 291, 598 Annotation: Subtype: Link Rect: 48, 598, 67, 587 Annotation: Subtype: Link Rect: 144, 598, 245, 587 Annotation: Subtype: Link Rect: 106, 510, 136, 499 ActionDest: 35 Annotation: Subtype: Link Rect: 48, 499, 146, 488 Annotation: Subtype: Link Rect: 201, 488, 291, 477 Annotation: Subtype: Link Rect: 48, 477, 57, 466 Annotation: Subtype: Link Rect: 88, 477, 93, 466 Annotation: Subtype: Link Rect: 362, 697, 392, 686 ActionDest: 36 Annotation: Subtype: Link Rect: 333, 565, 363, 554 ActionDest: 36 Annotation: Subtype: Link Rect: 309, 477, 405, 466 Annotation: Subtype: Link Rect: 309, 389, 405, 378 Annotation: Subtype: Link Rect: 309, 334, 405, 323 Annotation: Subtype: Link Rect: 354, 202, 455, 191 Annotation: Subtype: Link Rect: 349, 169, 445, 158 Annotation: Subtype: Link Rect: 312, 136, 348, 125 ActionDest: 37 Annotation: Subtype: Link Rect: 390, 81, 428, 70 ActionDest: 37 Page: Sequence: 4 Annotations: Annotation: Subtype: Link Rect: 324, 488, 357, 477 ActionDest: 37 Annotation: Subtype: Link Rect: 399, 367, 435, 356 ActionDest: 38 Annotation: Subtype: Link Rect: 458, 367, 547, 356 Annotation: Subtype: Link Rect: 303, 356, 313, 345 Annotation: Subtype: Link Rect: 446, 301, 482, 290 ActionDest: 39 Annotation: Subtype: Link Rect: 414, 268, 517, 257 Annotation: Subtype: Link Rect: 390, 246, 490, 235 Annotation: Subtype: Link Rect: 356, 180, 458, 169 Page: Sequence: 5 Annotations: Annotation: Subtype: Link Rect: 143, 150, 149, 139 ActionDest: 41 Annotation: Subtype: Link Rect: 396, 84, 402, 73 ActionDest: 41 Annotation: Subtype: Link Rect: 403, 84, 409, 73 ActionDest: 41 Annotation: Subtype: Link Rect: 442, 51, 448, 40 ActionDest: 41 Page: Sequence: 6 Annotations: Annotation: Subtype: Link Rect: 61, 318, 67, 307 ActionDest: 41 Annotation: Subtype: Link Rect: 102, 285, 108, 274 ActionDest: 41 Annotation: Subtype: Link Rect: 272, 208, 278, 197 ActionDest: 42 Annotation: Subtype: Link Rect: 279, 208, 285, 197 ActionDest: 42 Annotation: Subtype: Link Rect: 251, 186, 257, 175 ActionDest: 41 Annotation: Subtype: Link Rect: 259, 186, 265, 175 ActionDest: 41 Annotation: Subtype: Link Rect: 206, 164, 212, 153 ActionDest: 42 Annotation: Subtype: Link Rect: 214, 164, 220, 153 ActionDest: 42 Annotation: Subtype: Link Rect: 194, 153, 200, 142 ActionDest: 42 Annotation: Subtype: Link Rect: 279, 98, 285, 87 ActionDest: 42 Annotation: Subtype: Link Rect: 493, 230, 499, 219 ActionDest: 42 Annotation: Subtype: Link Rect: 500, 230, 506, 219 ActionDest: 42 Page: Sequence: 7 Annotations: Annotation: Subtype: Link Rect: 90, 119, 124, 108 ActionDest: 38 Page: Sequence: 8 Annotations: Annotation: Subtype: Link Rect: 487, 301, 547, 290 Annotation: Subtype: Link Rect: 303, 290, 333, 279 Annotation: Subtype: Link Rect: 317, 195, 492, 186 ActionDest: 34 Annotation: Subtype: Link Rect: 386, 165, 542, 156 Annotation: Subtype: Link Rect: 317, 155, 420, 146 ActionDest: 34 Annotation: Subtype: Link Rect: 509, 135, 547, 126 Annotation: Subtype: Link Rect: 317, 125, 419, 116 Annotation: Subtype: Link Rect: 317, 115, 410, 106 ActionDest: 34 Annotation: Subtype: Link Rect: 317, 95, 547, 86 ActionDest: 34 Annotation: Subtype: Link Rect: 317, 85, 324, 76 ActionDest: 34 Annotation: Subtype: Link Rect: 386, 65, 537, 56 Annotation: Subtype: Link Rect: 317, 55, 501, 46 ActionDest: 34 Page: Sequence: 9 Annotations: Annotation: Subtype: Link Rect: 254, 709, 291, 700 Annotation: Subtype: Link Rect: 62, 699, 232, 690 Annotation: Subtype: Link Rect: 62, 689, 99, 680 ActionDest: 34 Annotation: Subtype: Link Rect: 193, 669, 291, 660 Annotation: Subtype: Link Rect: 62, 659, 105, 650 Annotation: Subtype: Link Rect: 62, 649, 252, 640 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 619, 289, 610 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 579, 235, 570 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 549, 200, 540 Annotation: Subtype: Link Rect: 62, 539, 205, 530 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 509, 289, 500 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 469, 204, 460 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 419, 251, 410 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 379, 257, 370 ActionDest: 34 Annotation: Subtype: Link Rect: 254, 349, 291, 340 Annotation: Subtype: Link Rect: 62, 339, 148, 330 Annotation: Subtype: Link Rect: 62, 329, 274, 320 ActionDest: 38 Annotation: Subtype: Link Rect: 132, 289, 275, 280 Annotation: Subtype: Link Rect: 62, 279, 179, 270 ActionDest: 38 Annotation: Subtype: Link Rect: 209, 259, 291, 250 Annotation: Subtype: Link Rect: 62, 249, 96, 240 Annotation: Subtype: Link Rect: 62, 239, 260, 230 ActionDest: 38 Annotation: Subtype: Link Rect: 204, 219, 291, 210 Annotation: Subtype: Link Rect: 62, 209, 137, 200 Annotation: Subtype: Link Rect: 62, 199, 205, 190 ActionDest: 34 Annotation: Subtype: Link Rect: 209, 179, 291, 170 Annotation: Subtype: Link Rect: 62, 169, 123, 160 Annotation: Subtype: Link Rect: 62, 159, 177, 150 ActionDest: 34 Annotation: Subtype: Link Rect: 204, 139, 291, 130 Annotation: Subtype: Link Rect: 62, 129, 137, 120 Annotation: Subtype: Link Rect: 62, 119, 236, 110 ActionDest: 34 Annotation: Subtype: Link Rect: 62, 99, 222, 90 Annotation: Subtype: Link Rect: 62, 89, 246, 80 ActionDest: 34 Annotation: Subtype: Link Rect: 209, 59, 291, 50 Annotation: Subtype: Link Rect: 62, 49, 135, 40 Annotation: Subtype: Link Rect: 323, 729, 485, 720 ActionDest: 34 Annotation: Subtype: Link Rect: 379, 699, 534, 690 Annotation: Subtype: Link Rect: 323, 689, 552, 680 ActionDest: 34 Annotation: Subtype: Link Rect: 323, 679, 340, 670 ActionDest: 34 Annotation: Subtype: Link Rect: 406, 649, 549, 640 Annotation: Subtype: Link Rect: 323, 639, 492, 630 ActionDest: 34 Annotation: Subtype: Link Rect: 345, 599, 461, 590 Annotation: Subtype: Link Rect: 323, 589, 473, 580 ActionDest: 34 Annotation: Subtype: Link Rect: 345, 559, 504, 550 Annotation: Subtype: Link Rect: 323, 549, 552, 540 ActionDest: 34 Annotation: Subtype: Link Rect: 323, 539, 347, 530 ActionDest: 34 Annotation: Subtype: Link Rect: 384, 519, 551, 510 Annotation: Subtype: Link Rect: 323, 509, 388, 500 ActionDest: 34 Annotation: Subtype: Link Rect: 422, 499, 552, 490 Annotation: Subtype: Link Rect: 323, 489, 367, 480 Annotation: Subtype: Link Rect: 323, 479, 456, 470 ActionDest: 34 Annotation: Subtype: Link Rect: 414, 459, 552, 450 Annotation: Subtype: Link Rect: 323, 449, 352, 440 Annotation: Subtype: Link Rect: 323, 439, 366, 430 ActionDest: 34 Annotation: Subtype: Link Rect: 383, 429, 510, 420 Annotation: Subtype: Link Rect: 323, 419, 422, 410 ActionDest: 35 Annotation: Subtype: Link Rect: 430, 399, 552, 390 Annotation: Subtype: Link Rect: 323, 389, 440, 380 Annotation: Subtype: Link Rect: 323, 379, 463, 370 ActionDest: 35 Annotation: Subtype: Link Rect: 466, 349, 552, 340 Annotation: Subtype: Link Rect: 323, 339, 459, 330 Annotation: Subtype: Link Rect: 323, 329, 370, 320 ActionDest: 35 Annotation: Subtype: Link Rect: 323, 309, 426, 300 ActionDest: 35 Annotation: Subtype: Link Rect: 392, 289, 505, 280 Annotation: Subtype: Link Rect: 323, 279, 422, 270 ActionDest: 35 Annotation: Subtype: Link Rect: 466, 269, 552, 260 Annotation: Subtype: Link Rect: 323, 259, 383, 250 Annotation: Subtype: Link Rect: 323, 249, 409, 240 ActionDest: 37 Annotation: Subtype: Link Rect: 466, 229, 552, 220 Annotation: Subtype: Link Rect: 323, 219, 386, 210 Annotation: Subtype: Link Rect: 323, 209, 493, 200 ActionDest: 37 Annotation: Subtype: Link Rect: 323, 169, 517, 160 ActionDest: 37 Annotation: Subtype: Link Rect: 470, 139, 552, 130 Annotation: Subtype: Link Rect: 323, 129, 398, 120 Annotation: Subtype: Link Rect: 323, 119, 459, 110 ActionDest: 38 Annotation: Subtype: Link Rect: 376, 89, 527, 80 Annotation: Subtype: Link Rect: 323, 79, 511, 70 ActionDest: 38 Page: Sequence: 10 Annotations: Annotation: Subtype: Link Rect: 56, 709, 249, 700 ActionDest: 38 Annotation: Subtype: Link Rect: 248, 689, 285, 680 Annotation: Subtype: Link Rect: 56, 679, 187, 670 Annotation: Subtype: Link Rect: 56, 669, 256, 660 ActionDest: 38 Annotation: Subtype: Link Rect: 203, 639, 285, 630 Annotation: Subtype: Link Rect: 56, 629, 125, 620 Annotation: Subtype: Link Rect: 56, 619, 283, 610 ActionDest: 38 Annotation: Subtype: Link Rect: 56, 589, 186, 580 Annotation: Subtype: Link Rect: 56, 579, 185, 570 ActionDest: 38 Annotation: Subtype: Link Rect: 460, 729, 547, 720 Annotation: Subtype: Link Rect: 317, 719, 384, 710 Annotation: Subtype: Link Rect: 317, 709, 551, 700 ActionDest: 38 Annotation: Subtype: Link Rect: 317, 699, 406, 690 ActionDest: 38 Annotation: Subtype: Link Rect: 509, 679, 547, 670 Annotation: Subtype: Link Rect: 317, 669, 433, 660 Annotation: Subtype: Link Rect: 317, 659, 363, 650 ActionDest: 38 Annotation: Subtype: Link Rect: 464, 649, 547, 640 Annotation: Subtype: Link Rect: 317, 639, 406, 630 Annotation: Subtype: Link Rect: 317, 629, 545, 620 ActionDest: 38 Annotation: Subtype: Link Rect: 339, 599, 495, 590 Annotation: Subtype: Link Rect: 317, 589, 545, 580 ActionDest: 38 Annotation: Subtype: Link Rect: 380, 559, 546, 550 Checksum: fa845558 Type: CRC32 Checksum: 64c125a4a093f195920006801421382a Type: MD5 Checksum: f9568642b973375adc98d9dbdf04c068c93135d7 Type: SHA-1 Checksum: 0209610cb4d8a95eb585702829815df35aa485c4a869e690a736788f7f378c20 Type: SHA-256