Table 1 Population procedure of 'The Population Study of Women in Gothenburg, Sweden' and the present cross-sectional study in 2004 to 2005.
Invited | Excluded | External drop-outs | Participants | Participation rate | Eligible for present study | Internal drop-outs | Participants in present study | |
|---|---|---|---|---|---|---|---|---|
n | n | n | n | (%) | n | n | n | |
Total cohort | 846 | 7 | 339 | 500 | 59 | 433 | 9 | 424 |
38-years-old | 343 | 5 | 131 | 207 (41%) | 60 | 177 | 5 | 172 (41%) |
50-years-old | 503 | 2 | 208 | 293 (59%) | 58 | 256 | 4 | 252 (59%) |