Classification according to plasma E2 and FSH levels | |||
---|---|---|---|
Post- | Pre- | Total | |
Classification according to two-page questionnaire | |||
Post- | 240 | 27 | 267 |
Pre- | 20 | 72 | 92 |
Total | 260 | 99 | 359 |
Sensitivity: 240/260 = 92% (95% CI 89–96%) | |||
Specificity: 72/99 = 73% (95% CI 64–82%) | |||
Classification according to eight-page questionnaire | |||
Post- | 229 | 11 | 240 |
Pre- | 29 | 86 | 115 |
Unknown | 2 | 2 | 4 |
Total | 260 | 99 | 359 |
Sensitivity: 229/260 = 88% (95% CI 84–92%) | |||
Specificity: 86/99 = 87% (95% CI 80–94%) |