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% | ||||