doi:10.1093/ije/dyp210
Int J Epidemiol 2009;38:1118–1127
In this article, Table 2 on page 1124 should show the following percentages for reporting of ‘Recency: sex during menstrual period’ (T-ACASI vs T-IAQ): never (38.9 vs 47.1); 30 days (23.7 vs 23.7); 1–3 months (7.1 vs 4.8); 4-6 months (6.5 vs 5.7); 7–12 months (10.1 vs 10.4); and >12 months (13.8 vs 8.3).
In addition, Table 2 on page 1124 and references in text on pages 1123 and 1126 should refer to condom use during sex in the ‘past year’ not the past month.
The first author apologizes for the errors.