Table 1 Summary test characteristics of each of the 3 measures analysed
TEST 1: Falling hCG between days 0-4 | |||||
|---|---|---|---|---|---|
Treatment Success | Treatment Failure | Total | |||
Falling hCG | 94 | 16 | 110 | PPV: | 85% (95% CI 79-92%) |
Rising hCG | 52 | 44 | 96 | NPV: | 46% |
Total | 146 | 60 | 206 | ||
Sensitivity: | Specificity: | ||||
64% | 73% | ||||
TEST 2: ≥15% Fall in hCG between days 4-7 | |||||
Treatment Success | Treatment Failure | Total | |||
Falling hCG | 121 | 15 | 136 | PPV: | 89% (95% CI 84-94%) |
Rising hCG | 25 | 45 | 70 | NPV: | 64% |
Total | 146 | 60 | 206 | ||
Sensitivity: | Specificity: | ||||
83% | 75% | ||||
TEST 3: <20% Fall in hCG between days 0-4 | |||||
Treatment Success | Treatment Failure | Total | |||
Falling hCG | 59 | 4 | 63 | PPV: | 94% (95% CI 88-100%) |
Rising hCG | 87 | 56 | 143 | NPV: | 39% |
Total | 146 | 60 | 206 | ||
Sensitivity: | Specificity: | ||||
40% | 93% | ||||