Table 3.
Range of EPDS cutoff scores and corresponding values of sensitivity, specificity, and predictive values in percentages (N=40)
| Positive if equal or greater than | Sensitivity | Specificity | PPVa | NPVa | 1 − Specificity (FPR) | NND |
|---|---|---|---|---|---|---|
| ≥1 | 100 | 9.1 | 10 | 100 | 90.9 | 11 |
| ≥2 | 94.4 | 27.3 | 11.6 | 98 | 72.7 | 4.6 |
| ≥3 | 94.4 | 36.4 | 13.1 | 98.5 | 63.6 | 3.2 |
| ≥4 | 94.4 | 40.9 | 13.9 | 98.6 | 59.1 | 2.8 |
| ≥5 | 94.4 | 45.5 | 14.9 | 98.8 | 54.5 | 2.5 |
| ≥6 | 94.4 | 50 | 16 | 98.9 | 50 | 2.3 |
| ≥7 | 94.4 | 50 | 16 | 98.9 | 50 | 2.3 |
| ≥8 | 94.4 | 59.1 | 18.9 | 99 | 40.9 | 1.9 |
| ≥9 | 94.4 | 68.2 | 23.1 | 99.2 | 31.8 | 1.6 |
| ≥10 | 88.9 | 68.2 | 22.1 | 98.4 | 31.8 | 1.8 |
| ≥11 | 88.9 | 77.3 | 28.6 | 98.7 | 22.7 | 1.5 |
| ≥12 | 88.9 | 81.8 | 33.3 | 98.8 | 18.2 | 1.4 |
| ≥13 | 72.2 | 90.9 | 44.6 | 97 | 9.1 | 1.6 |
| ≥14 | 61.1 | 90.9 | 40.5 | 95.9 | 9.1 | 1.9 |
| ≥15 | 55.6 | 90.9 | 38.2 | 95.3 | 9.1 | 2.2 |
Note:
a
At a prevalence of 9.2% for major depression. The bold indicates the psychometric properties (sensitivity, specificity, PPV, NPV, false positive rate and NND) of the EPDS compared to the MINI at a cut-off score ≥12.
Abbreviations: EPDS, Edinburgh Postnatal Depression Scale; FPR, false-positive rate; NND, number needed to diagnose; NPV, negative predictive value; PPV, positive predictive value.