Correction: Impact of organised colorectal cancer screening on age-specific population incidences: evidence from a quasi-experimental study in Sweden
Gabriella Chauca Strand, Ulf Strömberg, Anna Forsberg, Carl Bonander
Abstract
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TopicsColorectal Cancer Screening and Detection · Health Promotion and Cardiovascular Prevention
Correction to: European Journal of Epidemiology (2024) 39:87–96 10.1007/s10654-023-01073-6
In Table 2 of this article, the footnote was missing and should have read ‘Over the period 2003–2006, data on colon cancers have been complemented from the Cancer Registry due to lack of registration of colon cancers in the Swedish Colorectal Cancer Registry (SCRCR) over the period’.Table 2. Descriptive data based on the Swedish Colorectal Cancer Registry data (2003–2019) on the study population and incident CRC cases in Stockholm–Gotland and the rest of Sweden (control), before and after the introduction of organised screening in Stockholm–Gotland in 2008/2009Stockholm–GotlandRest of Sweden (control)Pre-screening period 2003–2007^a^Screening roll-out period 2008–2013Widespread screening period 2014–2019Period 2003–2007^a^Period 2008–2013Period 2014–2019Outcome dataIncident cases, n (rate per 100.000 person-years)1797 (142.2)2571 (141.7)2685 (134.9)8518 (156.5)11,562 (153.4)12,681 (158.3)Person-years, n1,263,6551,814,1061,990,8605,441,1967,535,4058,012,304Population characteristicsEducational attainment, %Pre-secondary, ≤ 9 years27.521.917.841.532.425.0Secondary, > 9 years ≤ 12 years39.740.340.138.242.345.3Post-secondary, > 12 years30.836.340.819.224.228.8Missing2.01.51.21.21.00.9Region of birth, % Nordic country88.287.183.494.493.892.0 Other western country3.93.22.81.71.61.4 Non-western country7.99.713.83.94.66.6^a^Over the period 2003–2006, data on colon cancers have been complemented from the Cancer Registry due to lack of registration of colon cancers in the Swedish Colorectal Cancer Registry (SCRCR) over the period
In Table 3 of this article, the ‘Screening roll-out’ data in the column ‘70–74 years’ was incorrectly published with – 9.03 (− 29.88, 11.81), − 8.83 (− 29.43, 11.77) [0.401] [0.396] and should have been − 15.40 (− 36.28, 5.49) [0.148], − 14.96 (− 35.59, 5.66) [0.155]
Incorrect version:Age groups60–74 years60–69 years70–74 yearsModel (1)Model (2)Model (1)Model (2)Model (1)Model (2)Estimated rate difference Full period− 3.48 (− 10.36, 3.40)− 4.09 (− 10.92, 2.74)1.43 (− 8.00, 10.87)2.20 (− 7.66, 12.06)− 22.56 (− 38.38, − 6.74)− 20.69 (− 35.39, − 5.99)[0.321][0.240][0.766][0.662][0.005][0.006] Screening roll-out2.59 (− 6.75, 11.92)1.28 (− 7.89, 10.45)6.90 (− 3.80, 17.61)6.77 (− 3.52, 17.06)− 9.03 (− 29.88, 11.81)− 8.83 (− 29.43, 11.77)[0.587][0.784][0.206][0.197][0.396][0.401] Widespread screening− 9.11 (− 18.08, − 0.14)− 8.96 (− 17.57, − 0.35)1.67 (− 8.91, 12.25)2.76 (− 8.71, 14.23)− 25.40 (− 42.97, − 7.83)− 22.53 (− 39.67, − 5.39)[0.047][0.041][0.757][0.637][0.005][0.010] Placebo test, 2006^a^0.93 (− 11.90, 13.77)0.86 (− 11.80, 13.51)10.55 (− 4.06, 25.16)10.39 (− 4.24, 25.03)− 13.87 (− 45.12, 17.39)− 13.73 (− 44.63, − 17.16)[0.887][0.895][0.157][0.164][0.385][0.384]Rate differences expressed per 100.000 person-years. Confidence intervals (95% CIs) and p values [in brackets] based on cluster-robust bootstrap with 5000 resamples (clustering by region). Estimates reflect the average impact over the full period 2008–2019 and post-intervention phases 2008–2013 and 2014–2019 respectively for the age groups 60–74 years (total study population) and 60–69 years. For the age group 70–74 years; estimates reflect the average impact over the period 2011–2019 (birth cohorts exposed to organised screening entered this age group in 2011, see Supplementary Fig. 1 for details) and post-intervention phases 2011–2013 and 2014–2019 respectively(1) Difference-in-difference estimations including region and year fixed effects(2) Difference-in-difference estimations adjusted for age groups (5-year groups), sex, educational attainment (primary, secondary, tertiary), and region of birth (Nordic, non-Western, other Western countries)^a^In-time placebo test by restricting the data to the pre-intervention period and assigning a hypothetical intervention in 2006
Corrected version:Table 3. Estimated impact of organised screening on incident CRC cases in Stockholm–Gotland using difference-in-difference estimations based on CRC cases identified in the Swedish Colorectal Cancer Registry data (2003–2019)Age groups60–74 years60–69 years70–74 yearsModel (1)Model (2)Model (1)Model (2)Model (1)Model (2)Estimated rate difference Full period− 3.48 (− 10.36, 3.40)− 4.09 (− 10.92, 2.74)1.43 (− 8.00, 10.87)2.20 (− 7.66, 12.06)− 22.56 (− 38.38, − 6.74)− 20.69 (− 35.39, − 5.99)[0.321][0.240][0.766][0.662][0.005][0.006] Screening roll-out2.59 (− 6.75, 11.92)1.28 (− 7.89, 10.45)6.90 (− 3.80, 17.61)6.77 (− 3.52, 17.06)− 15.40 (− 36.28, 5.49)− 14.96 (− 35.59, 5.66)[0.587][0.784][0.206][0.197][0.148][0.155] Widespread screening− 9.11 (− 18.08, − 0.14)− 8.96 (− 17.57, − 0.35)1.67 (− 8.91, 12.25)2.76 (− 8.71, 14.23)− 25.40 (− 42.97, − 7.83)− 22.53 (− 39.67, − 5.39)[0.047][0.041][0.757][0.637][0.005][0.010] Placebo test, 2006^a^0.93 (− 11.90, 13.77)0.86 (− 11.80, 13.51)10.55 (− 4.06, 25.16)10.39 (− 4.24, 25.03)− 13.87 (− 45.12, 17.39)− 13.73 (− 44.63, − 17.16)[0.887][0.895][0.157][0.164][0.385][0.384]Rate differences expressed per 100.000 person-years. Confidence intervals (95% CIs) and p values [in brackets] based on cluster-robust bootstrap with 5000 resamples (clustering by region). Estimates reflect the average impact over the full period 2008–2019 and post-intervention phases 2008–2013 and 2014–2019 respectively for the age groups 60–74 years (total study population) and 60–69 years. For the age group 70–74 years; estimates reflect the average impact over the period 2011–2019 (birth cohorts exposed to organised screening entered this age group in 2011, see Supplementary Fig. 1 for details) and post-intervention phases 2011–2013 and 2014–2019 respectively(1) Difference-in-difference estimations including region and year fixed effects(2) Difference-in-difference estimations adjusted for age groups (5-year groups), sex, educational attainment (primary, secondary, tertiary), and region of birth (Nordic, non-Western, other Western countries)^a^In-time placebo test by restricting the data to the pre-intervention period and assigning a hypothetical intervention in 2006
The original article has been corrected.