1. Epidemiology and Global Health

Nationwide participation in FIT-based colorectal cancer screening in Denmark during the COVID-19 pandemic: An observational study

  1. Tina Bech Olesen  Is a corresponding author
  2. Henry Jensen
  3. Henrik Møller
  4. Jens Winther Jensen
  5. Berit Andersen
  6. Morten Rasmussen
  1. The Danish Clinical Quality Program – National Clinical Registries (RKKP), Denmark
  2. University Research Clinic for Cancer Screening, Department of Public Health Programmes, Randers Regional Hospital, Denmark
  3. Department of Clinical Medicine, Aarhus University, Denmark
  4. The Colorectal Cancer Screening Programme, the Capital Region, Denmark
  5. Abdominal Center, Bispebjerg Hospital, Denmark
https://doi.org/10.7554/eLife.81808
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Cite this article
  1. Tina Bech Olesen
  2. Henry Jensen
  3. Henrik Møller
  4. Jens Winther Jensen
  5. Berit Andersen
  6. Morten Rasmussen
(2023)
Nationwide participation in FIT-based colorectal cancer screening in Denmark during the COVID-19 pandemic: An observational study
eLife 12:e81808.
https://doi.org/10.7554/eLife.81808
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4 figures, 4 tables and 5 additional files

Figures

Figure 1
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Flow-chart of the study population (participation in colorectal cancer screening).
Figure 2
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Flow-chart of the study population (compliance with colonoscopy).
Figure 3
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Participation in colorectal cancer screening (%) in Denmark within 90, 180 and 365 days since invitation from 2018 to 2021.
Figure 4
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Compliance with colonoscopy (%) within 60 and 365 days since a positive FIT test from colorectal cancer screening in Denmark from 2018 to 2021.

Tables

Table 1
Baseline characteristics of people invited to participate in colorectal cancer screening in Denmark from 2018 to 2021.
Pre-pandemic (1 January 2018 to 31 January 2020)Pre-lockdown (1 February 2020 to 10 March 2020)1st lockdown (11 March 2020 to 15 April 2020)1st re-opening (16 April 2020 to 15 December 2020)2nd lockdown (16 December 2020 to 27 February 2021)2nd re-opening (28 February 2021 to 30 September 2021)Total
N (%)N (%)N (%)N (%)N (%)N (%)N (%)
Total1,804,770 (57.6)104,892 (3.3)40,146 (1.3)562,124 (17.9)176,469 (5.6)445,546 (14.2)3,133,947 (100.0)
Sex
Men893,009 (49.5)52,523 (50.1)19,285 (48.0)276,731 (49.2)87,667 (49.7)218,713 (49.1)1,547,928 (49.4)
Women911,761 (50.5)52,369 (49.9)20,861 (52.0)285,393 (50.8)88,802 (50.3)226,833 (50.9)1,586,019 (50.6)
Age at invitation
50–54 years478,804 (26.5)14,982 (14.3)7322 (18.2)127,306 (22.6)49,217 (27.9)138,988 (31.2)816,619 (26.1)
55–59 years375,309 (20.8)38,988 (37.2)5739 (14.3)150,615 (26.8)32,217 (18.3)61,318 (13.8)664,186 (21.2)
60–64 years332,766 (18.4)18,089 (17.2)2929 (7.3)101,925 (18.1)33,503 (19.0)86,806 (19.5)576,018 (18.4)
65–69 years308,725 (17.1)16,334 (15.6)2859 (7.1)92,026 (16.4)30,398 (17.2)79,821 (17.9)530,163 (16.9)
70–74 years309,166 (17.1)16,499 (15.7)21,297 (53.0)90,252 (16.1)31,134 (17.6)78,613 (17.6)546,961 (17.5)
Median (IQI)60 (54–67)59 (55–66)72 (56–75)60 (55–67)60 (54–67)61 (54–67)60 (54–67)
Ethnicity
Danish descent1,651,658 (91.6)95,490 (91.1)36,665 (91.4)512,355 (91.2)150,194 (91.0)366,141 (91.2)2,812,503 (91.4)
Descendant of immigrant2932 (0.2)169 (0.2)65 (0.2)987 (0.2)284 (0.2)617 (0.2)5054 (0.2)
Western immigrant48,061 (2.7)2871 (2.7)1164 (2.9)15,877 (2.8)4642 (2.8)10,902 (2.7)83,517 (2.7)
Non-western immigrant99,730 (5.5)6334 (6.0)2238 (5.6)32,755 (5.8)9939 (6.0)23,620 (5.9)174,616 (5.7)
Cohabitation status
Living alone567,436 (31.5)34,149 (32.6)14,487 (36.1)177,512 (31.6)51,320 (31.1)120,737 (30.1)965,641 (31.4)
Cohabiting/co-living163,186 (9.1)9679 (9.2)2758 (6.9)53,372 (9.5)15,775 (9.6)37,404 (9.3)282,174 (9.2)
Married/registered partner1,071,632 (59.5)61,036 (58.2)22,887 (57.0)331,090 (58.9)97,964 (59.4)243,139 (60.6)1,827,748 (59.4)
Educational level (ISCED)
ISCED15 levels 1–2976,876 (55.1)58,698 (57.0)18,575 (47.2)316,639 (57.3)98,365 (56.8)250,198 (57.2)1,719,351 (55.9)
ISCED15 levels 3–5597,535 (33.7)33,332 (32.3)15,297 (38.8)177,249 (32.1)55,821 (32.2)139,785 (32.0)1,019,019 (33.1)
ISCED15 levels 6–8198,531 (11.2)11,011 (10.7)5513 (14.0)58,592 (10.6)18,970 (11.0)47,211 (10.8)339,828 (11.0)
Disposable income
Lowest quintile353,612 (19.6)18,722 (17.9)9939 (24.8)97,358 (17.4)29,966 (17.0)74,581 (16.8)584,178 (18.7)
Second quintile358,955 (19.9)20,579 (19.7)9583 (23.9)105,809 (18.9)33,736 (19.2)83,982 (18.9)612,644 (19.6)
Third quintile366,888 (20.3)21,023 (20.1)7332 (18.3)114,154 (20.4)33,347 (18.9)82,529 (18.6)625,273 (20.0)
Fourth quintile366,219 (20.3)21,767 (20.8)6614 (16.5)119,544 (21.3)36,705 (20.8)94,378 (21.2)645,227 (20.6)
Highest quintile358,608 (19.9)22,588 (21.6)6644 (16.6)123,676 (22.1)42,412 (24.1)108,662 (24.5)662,590 (21.2)
Healthcare usage
Rare386,510 (21.4)23,944 (22.8)7293 (18.2)125,799 (22.4)37,849 (21.4)95,024 (21.3)676,419 (21.6)
Low338,179 (18.7)18,944 (18.1)6054 (15.1)103,813 (18.5)32,147 (18.2)80,134 (18.0)579,271 (18.5)
Average401,358 (22.2)23,271 (22.2)8569 (21.3)125,600 (22.3)39,176 (22.2)98,833 (22.2)696,807 (22.2)
High333,529 (18.5)19,230 (18.3)8343 (20.8)104,646 (18.6)33,618 (19.1)85,706 (19.2)585,072 (18.7)
Frequent345,194 (19.1)19,503 (18.6)9887 (24.6)102,266 (18.2)33,679 (19.1)85,849 (19.3)596,378 (19.0)
Time from invitation to participation, median (IDI)28 (16–72)25 (15–78)32 (16–64)28 (16–66)24 (16–63)25 (16–59)28 (16–70)

  1. IQI = interquartile interval.; IDI = interdecentile interval.; ISCED = International Standard Classification of Education.

Table 2
Prevalence ratios (PRs) and 95% confidence intervals (CIs) of participation in colorectal cancer screening within 90 days since invitation in Denmark 2018–2021*.
NPre-pandemic (1 January 2018 to 31 January 2020)Pre-lockdown (1 February 2020 to 10 March 2020)1st lockdown (11 March 2020 to 15 April 2020)1st re-opening (16 April 2020 to 15 December 2020)2nd lockdown (16 December 2020 to 27 February 2021)2nd re-opening (28 February 2021 to 30 September 2021)
N=180,477N=104,892N=40,146N=562,124N=176,469N=445,546
PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]
Overall3,133,9471.00–0.95[0.94–0.96]0.85[0.85–0.86]1.04[1.04–1.05]1.09[1.09–1.10]1.11[1.10–1.12]
Sex
Men1,547,9281.00–0.88[0.88–0.89]0.91[0.89–0.92]1.03[1.02–1.03]1.04[1.04–1.05]1.07[1.07–1.08]
Women1,586,0191.00–0.92[0.92–0.93]0.84[0.83–0.85]1.03[1.02–1.03]1.03[1.03–1.04]1.06[1.06–1.07]
Age at invitation
50–54 years816,6191.00–0.89[0.87–0.91]1.14[1.12–1.17]1.00[0.99–1.01]1.04[1.03–1.06]1.16[1.14–1.18]
55–59 years664,1861.00–0.93[0.91–0.94]1.09[1.06–1.11]1.11[1.10–1.12]1.24[1.22–1.25]1.18[1.16–1.19]
60–64 years576,0181.00–0.94[0.93–0.96]1.03[1.00–1.06]1.03[1.02–1.04]1.08[1.07–1.10]1.09[1.07–1.10]
65–69 years530,1631.00–0.96[0.95–0.97]0.99[0.96–1.02]1.02[1.01–1.03]1.07[1.06–1.09]1.07[1.06–1.08]
70–74 years546,9611.00–1.01[1.00–1.03]0.77[0.76–0.79]1.04[1.03–1.05]1.09[1.07–1.10]1.10[1.08–1.11]
Ethnicity
Danish descent2,812,5031.00–0.95[0.94–0.95]0.85[0.84–0.86]1.04[1.04–1.05]1.09[1.08–1.10]1.11[1.10–1.12]
Descendant of immigrant50541.00–0.95[0.79–1.14]0.83[0.62–1.11]1.04[0.93–1.17]1.08[0.91–1.28]1.12[0.94–1.32]
Western Immigrant83,5171.00–0.95[0.91–1.00]0.88[0.82–0.94]1.08[1.05–1.11]1.16[1.11–1.21]1.20[1.15–1.25]
Non-western immigrant174,6161.00–0.97[0.94–1.00]1.00[0.95–1.05]1.11[1.09–1.13]1.18[1.15–1.22]1.24[1.20–1.28]
Cohabitation status
Living alone965,6411.00–0.94[0.93–0.95]0.85[0.83–0.87]1.06[1.05–1.07]1.12[1.11–1.14]1.16[1.14–1.17]
Cohabiting/co-living282,1741.00–0.95[0.92–0.97]0.97[0.93–1.00]1.05[1.04–1.07]1.12[1.09–1.14]1.14[1.12–1.17]
Married/registered partner1,827,7481.00–0.95[0.95–0.96]0.86[0.85–0.87]1.04[1.03–1.04]1.08[1.07–1.09]1.09[1.09–1.10]
Educational level (ISCED)
ISCED15 levels 1–21,719,3511.00–0.95[0.94–0.95]0.91[0.90–0.92]1.05[1.04–1.05]1.09[1.08–1.10]1.12[1.11–1.13]
ISCED15 levels 3–51,019,0191.00–0.96[0.94–0.97]0.80[0.79–0.82]1.04[1.03–1.04]1.09[1.08–1.10]1.10[1.09–1.11]
ISCED15 levels 6–8339,8281.00–0.95[0.94–0.97]0.83[0.81–0.85]1.05[1.04–1.06]1.11[1.09–1.13]1.12[1.10–1.13]
Disposable income
Lowest quintile584,1781.00–0.95[0.94–0.97]0.73[0.71–0.75]1.04[1.03–1.05]1.08[1.06–1.10]1.11[1.09–1.12]
Second quintile612,6441.00–0.96[0.95–0.98]0.78[0.76–0.79]1.05[1.04–1.06]1.10[1.08–1.11]1.13[1.11–1.14]
Third quintile625,2731.00–0.95[0.94–0.97]0.86[0.84–0.88]1.05[1.04–1.06]1.08[1.07–1.10]1.11[1.10–1.12]
Fourth quintile645,2271.00–0.95[0.94–0.96]0.94[0.92–0.96]1.04[1.04–1.05]1.08[1.07–1.10]1.10[1.09–1.11]
Highest quintile662,5901.00–0.93[0.92–0.94]0.98[0.96–1.00]1.04[1.03–1.05]1.10[1.09–1.11]1.10[1.09–1.11]
Healthcare usage
Rare676,4191.00–0.92[0.90–0.93]0.93[0.90–0.95]1.04[1.03–1.05]1.10[1.08–1.12]1.11[1.09–1.12]
Low579,2711.00–0.95[0.94–0.97]0.90[0.88–0.92]1.05[1.04–1.06]1.10[1.08–1.11]1.11[1.10–1.13]
Average696,8071.00–0.95[0.94–0.97]0.86[0.85–0.88]1.05[1.04–1.06]1.09[1.08–1.10]1.11[1.10–1.12]
High585,0721.00–0.97[0.95–0.98]0.84[0.82–0.86]1.05[1.04–1.05]1.09[1.08–1.11]1.12[1.10–1.13]
Frequent596,3781.00–0.97[0.95–0.98]0.81[0.79–0.83]1.04[1.03–1.05]1.09[1.08–1.10]1.11[1.10–1.12]
  1. *

    Adjusted for year, month and age at invitation; PR = prevalence ratio; CI = confidence interval; ISCED = International Standard Classification of Education.

Table 3
Baseline characteristics of people with a positive FIT test from colorectal cancer screening in Denmark from 2018 to 2021.
Pre-pandemic (1 January 2018 to 31 January 2020)Pre-lockdown (1 February 2020 to 10 March 2020)1st lockdown (11 March 2020 to 15 April 2020)1st re-opening (16 April 2020 to 15 December 2020)2nd lockdown (16 December 2020 to 27 Febraury 2021)2nd re-opening (28 February 2021 to 30 September 2021)Total
N (%)N (%)N (%)N (%)N (%)N (%)N (%)
Total54,886 (58.2)2942 (3.1)1319 (1.4)16,628 (17.6)5383 (5.7)13,215 (14.0)94,373 (100.0)
Sex
Men29,880 (54.4)1532 (52.1)704 (53.4)8796 (52.9)2835 (52.7)6918 (52.3)50,665 (53.7)
Women25,006 (45.6)1410 (47.9)615 (46.6)7832 (47.1)2548 (47.3)6297 (47.7)43,708 (46.3)
Age at invitation
50–54 years9481 (17.3)291 (9.9)185 (14.0)2615 (15.7)987 (18.3)2876 (21.8)16,435 (17.4)
55–59 years8606 (15.7)838 (28.5)157 (11.9)3536 (21.3)813 (15.1)1479 (11.2)15,429 (16.3)
60–64 years10,343 (18.8)524 (17.8)78 (5.9)2944 (17.7)1000 (18.6)2433 (18.4)17,322 (18.4)
65–69 years12,126 (22.1)559 (19.0)111 (8.4)3526 (21.2)1165 (21.6)2888 (21.9)20,375 (21.6)
70–74 years14,330 (26.1)730 (24.8)788 (59.7)4007 (24.1)1418 (26.3)3539 (26.8)24,812 (26.3)
Median (IQI)64 (57–70)63 (56–69)74 (59–75)63 (56–69)64 (57–70)64 (57–70)64 (57–70)
Ethnicity
Danish descent51,287 (93.6)2735 (93.0)1221 (92.6)15,484 (93.1)4716 (92.4)11,344 (92.5)86,787 (93.3)
Western immigrant1306 (2.4)66 (2.2)37 (2.8)388 (2.3)130 (2.5)302 (2.5)2229 (2.4)
Non-western immigrant2205 (4.0)140 (4.8)61 (4.6)756 (4.5)257 (5.0)620 (5.1)4039 (4.3)
Cohabitation status
Living alone16,451 (30.0)939 (31.9)463 (35.1)5046 (30.3)1578 (30.9)3575 (29.1)28,052 (30.1)
Cohabiting/co-living4273 (7.8)231 (7.9)88 (6.7)1377 (8.3)431 (8.4)1037 (8.5)7437 (8.0)
Married/registered partner34,074 (62.2)1771 (60.2)768 (58.2)10,205 (61.4)3094 (60.6)7654 (62.4)57,566 (61.9)
Educational level (ISCED)
ISCED15 levels 1–227,676 (51.3)1577 (54.6)605 (46.6)8988 (54.9)2823 (53.6)7064 (54.4)48,733 (52.5)
ISCED15 levels 3–520,618 (38.2)1048 (36.3)521 (40.1)5741 (35.1)1907 (36.2)4682 (36.1)34,517 (37.2)
ISCED15 levels 6–85666 (10.5)264 (9.1)172 (13.3)1632 (10.0)540 (10.2)1231 (9.5)9505 (10.2)
Disposable income
Lowest quintile11,851 (21.6)556 (18.9)321 (24.3)3124 (18.8)962 (17.9)2481 (18.8)19,295 (20.5)
Second quintile12,530 (22.8)690 (23.5)351 (26.6)3555 (21.4)1211 (22.5)2954 (22.4)21,291 (22.6)
Third quintile11,077 (20.2)608 (20.7)234 (17.7)3439 (20.7)1042 (19.4)2479 (18.8)18,879 (20.0)
Fourth quintile10,142 (18.5)569 (19.4)210 (15.9)3321 (20.0)1046 (19.5)2615 (19.9)17,903 (19.0)
Highest quintile9244 (16.9)517 (17.6)203 (15.4)3165 (19.1)1114 (20.7)2641 (20.1)16,884 (17.9)
Healthcare usage
Rare8431 (15.4)409 (13.9)161 (12.2)2576 (15.5)770 (14.3)1903 (14.4)14,250 (15.1)
Low8450 (15.4)440 (15.0)171 (13.0)2628 (15.8)833 (15.5)1957 (14.8)14,479 (15.3)
Average11,964 (21.8)608 (20.7)260 (19.7)3704 (22.3)1205 (22.4)2823 (21.4)20,564 (21.8)
High11,300 (20.6)673 (22.9)269 (20.4)3502 (21.1)1126 (20.9)2921 (22.1)19,791 (21.0)
Frequent14,741 (26.9)812 (27.6)458 (34.7)4218 (25.4)1449 (26.9)3611 (27.3)25,289 (26.8)
Time from positive FIT to colonoscopy, median (IDI)13 (8–29)13 (7–31)13 (8–31)13 (8–29)13 (8–28)13 (8–29)13 (8–29)

  1. IQI = interquartile interval.; IDI = interdecentile interval.; ISCED = International Standard Classification of Education.

Table 4
Prevalence ratios (PRs) and 95% confidence intervals (CIs) of compliance with colonoscopy within 60 days since a positive FIT test from colorectal cancer screening in Denmark from 2018 to 2021*.
NPre-pandemic (1 January 2018 to 31 January 2020)Pre-lockdown (1 February 2020 to 10 March 2020)1st lockdown (11 March 2020 to 15 April 2020)1st re-opening (16 April 2020 to 15 December 2020)2nd lockdown (16 December 2020 to 27 February 2021)2nd re-opening (28 February 2021 to 30 September 2021)
N=54,982N=2944N=1319N=16,628N=5390N=13,222
PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]PR[95% CI]
Overall94,3731.00–0.98[0.96–1.00]0.96[0.93–0.98]0.99[0.98–1.00]1.01[1.00–1.03]0.99[0.98–1.01]
Sex
Men50,6651.00–0.97[0.95–0.99]0.94[0.91–0.97]0.99[0.98–0.99]0.99[0.97–1.00]0.97[0.96–0.98]
Women43,7081.00–0.98[0.96–1.00]0.96[0.93–0.99]0.99[0.98–1.00]1.00[0.99–1.02]0.99[0.98–1.00]
Age at invitation
50–54 years16,4351.00–1.04[1.00–1.08]0.98[0.93–1.04]1.00[0.98–1.03]1.01[0.97–1.05]0.98[0.94–1.01]
55–59 years15,4291.00–0.97[0.94–1.01]0.94[0.87–1.01]1.00[0.98–1.02]1.02[0.98–1.05]1.02[0.98–1.06]
60–64 years17,3221.00–1.00[0.97–1.04]1.04[0.98–1.11]0.99[0.97–1.01]1.00[0.97–1.04]0.98[0.94–1.01]
65–69 years20,3751.00–0.99[0.96–1.03]1.04[0.98–1.10]0.99[0.97–1.01]1.03[1.00–1.06]1.00[0.97–1.03]
70–74 years24,8122.00–0.94[0.91–0.98]0.94[0.90–0.97]0.98[0.96–1.00]1.01[0.98–1.04]0.99[0.96–1.02]
Ethnicity
Danish descent86,7871.00–0.99[0.97–1.00]0.96[0.94–0.99]1.00[0.99–1.01]1.02[1.00–1.03]1.00[0.98–1.01]
Western immigrant22291.00–0.87[0.75–1.02]0.84[0.68–1.04]0.97[0.90–1.05]0.99[0.87–1.13]0.99[0.89–1.11]
Non-western immigrant40391.00–0.91[0.82–1.01]0.90[0.78–1.05]0.98[0.92–1.04]1.00[0.92–1.10]0.95[0.87–1.04]
Cohabitation status
Living alone28,0521.00–0.97[0.93–1.00]0.95[0.90–1.00]1.00[0.97–1.02]1.04[1.01–1.08]1.04[1.01–1.08]
Cohabiting/co-living74371.00–1.02[0.96–1.08]1.01[0.93–1.09]1.01[0.98–1.05]1.03[0.98–1.08]1.03[0.98–1.08]
Married/registered partner57,5661.00–0.99[0.97–1.00]0.96[0.93–0.99]0.99[0.98–1.00]1.00[0.98–1.02]1.00[0.98–1.02]
Educational level (ISCED)
ISCED15 levels 1–248,7331.00–1.00[0.98–1.02]0.94[0.91–0.98]0.99[0.97–1.00]1.01[0.99–1.03]0.98[0.96–1.00]
ISCED15 levels 3–5345171.00–0.97[0.95–1.00]0.97[0.94–1.01]1.00[0.99–1.02]1.01[0.99–1.04]1.01[0.98–1.03]
ISCED15 levels 6–895051.00–0.94[0.89–1.00]0.97[0.91–1.03]0.99[0.96–1.02]1.02[0.98–1.07]0.99[0.94–1.03]
Disposable income
Lowest quintile19,2951.00–0.96[0.92–1.00]0.91[0.86–0.96]0.99[0.96–1.01]1.02[0.98–1.06]0.99[0.95–1.02]
Second quintile21,2911.00–0.98[0.94–1.02]0.92[0.87–0.98]1.01[0.99–1.04]1.04[1.01–1.08]1.02[0.99–1.06]
Third quintile18,8791.00–0.99[0.95–1.02]0.98[0.93–1.03]0.98[0.96–1.00]0.99[0.96–1.03]0.99[0.96–1.02]
Fourth quintile17,9031.00–0.97[0.94–1.00]0.98[0.93–1.02]0.99[0.97–1.01]1.00[0.97–1.03]0.98[0.95–1.01]
Highest quintile16,8841.00–1.01[0.98–1.05]1.02[0.97–1.06]0.99[0.97–1.01]1.00[0.97–1.03]0.98[0.95–1.00]
Healthcare usage
Rare14,2501.00–0.98[0.94–1.02]0.98[0.92–1.04]1.01[0.99–1.04]1.03[0.99–1.07]0.99[0.96–1.03]
Low14,4791.00–0.97[0.93–1.01]0.97[0.92–1.03]0.99[0.97–1.02]0.99[0.95–1.02]0.98[0.95–1.01]
Average20,5641.00–1.01[0.98–1.04]0.94[0.89–0.99]1.00[0.98–1.02]1.02[0.99–1.05]0.99[0.96–1.02]
High19,7911.00–0.99[0.95–1.02]0.97[0.92–1.01]0.98[0.96–1.01]1.01[0.97–1.04]1.01[0.97–1.04]
Frequent25,2891.00–0.96[0.93–1.00]0.95[0.90–0.99]0.98[0.96–1.01]1.01[0.98–1.04]0.98[0.95–1.01]
  1. *

    Adjusted for year, month and age at invitation; PR = prevalence ratio; CI = confidence interval; ISCED = International Standard Classification of Education.

Additional files

Supplementary file 1

Participation in colorectal cancer screening (%) in Denmark within 90 days since invitation from 2018–2021.

https://cdn.elifesciences.org/articles/81808/elife-81808-supp1-v2.xlsx
Supplementary file 2

Baseline characteristics of first-time invitees invited to participate in colorectal cancer screening in Denmark 2018–2021.

https://cdn.elifesciences.org/articles/81808/elife-81808-supp2-v2.xlsx
Supplementary file 3

Prevalence ratios (PRs) and 95% confidence intervals (CI) of participation in colorectal cancer screening within 90 days since invitation in Denmark among first-time invitees 2018–2021.

https://cdn.elifesciences.org/articles/81808/elife-81808-supp3-v2.xlsx
Supplementary file 4

Compliance with colonoscopy (%) in Denmark within 60 days since a positive FIT test from 2018 to 2021.

https://cdn.elifesciences.org/articles/81808/elife-81808-supp4-v2.xlsx
MDAR checklist
https://cdn.elifesciences.org/articles/81808/elife-81808-mdarchecklist1-v2.pdf

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  1. Tina Bech Olesen
  2. Henry Jensen
  3. Henrik Møller
  4. Jens Winther Jensen
  5. Berit Andersen
  6. Morten Rasmussen
(2023)
Nationwide participation in FIT-based colorectal cancer screening in Denmark during the COVID-19 pandemic: An observational study
eLife 12:e81808.
https://doi.org/10.7554/eLife.81808