In this paper by B Strander and colleagues (BMJ 2007;335:24 Nov, doi: 10.1136/bmj.39363.471806.BE) the authors noticed several inaccuracies in table 2 (the table appears only in the full text version, on bmj.com). The relative risks (95% confidence intervals) for cervical cancer for the period of diagnosis should be 1.27 (1.07 to 1.51) for 1971-80, 1.63 (1.35 to 1.97) for 1981-90, and 1.65 (1.27 to 2.16) for 1991-2002 [not 2000]. The main findings of the study remain as reported.
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