Table 11 Characteristics of the PROVAQ study sample
Cases (\(\boldsymbol{n = 364}\)) | Controls (\(\boldsymbol{n = 907}\)) | Controls Exposed (\(\boldsymbol{n = 242}\)) | Controls Unexposed (\(\boldsymbol{n = 665}\)) | |
|---|---|---|---|---|
Duration of oral contraceptive use \(\ge 10\) years, n (%) | 61 (16.8 %) | 242 (26.7 %) | — | — |
Lifetime number of ovulatory cycles, mean (SD) | 383.92 (111.07) | 354.01 (122.20) | 255.48 (98.93) | 389.87 (109.53) |
Age (years), mean (SD) | 59.22 (11.35) | 58.18 (12.62) | 54.60 (11.20) | 59.48 (12.86) |
Highest education level > high school, n (%) | 228 (62.64 %) | 626 (69.02 %) | 190 (78.51 %) | 436 (65.56 %) |