Table 4.
Areas under ROC Curves for Observed and Imputed Data, Continuous, Dichotomized, and Trichotomized Scales
| Continuous | Dichotomized scales used in current study | Trichotomized scales suggested by imputed ROC analyses | |||||
|---|---|---|---|---|---|---|---|
| Observed | |||||||
| ROC | 95%CI | ROC | 95% CI | ||||
| EPDS | 0.84 | 0.70–0.99 | 0–9 vs. ≥10 | 0.75 | 0.58–0.91 | ||
| PHQ-9 | 0.79 | 0.62–0.97 | 0–9 vs. ≥10 | 0.59 | 0.44–0.75 | ||
| PDSS_SF | 0.73 | 0.53–0.93 | 7–13 vs. ≥14 | 0.49 | 0.39–0.59 | ||
| Imputed | |||||||
| ROC | 95%CI | ROC | 95% CI | ||||
| EPDS | 0.88 | 0.81–0.95 | 0–9 vs. ≥10 | 0.69 | 0.65–0.75 | 0–5, 6–9, ≥10 | 0.81 |
| PHQ-9 | 0.80 | 0.72–0.88 | 0–9 vs. ≥10 | 0.59 | 0.56–0.62 | 0–2, 3–6, ≥7 | 0.78 |
| PDSS_SF | 0.82 | 0.74–0.90 | 7–13 vs. ≥14 | 0.73 | 0.67–0.80 | 7–13, 14–17, ≥18 | 0.77 |
EPDS indicates Edinburgh Postnatal Depression Scale; PDSS_SF, 7-item Short Postpartum Depression Screening Scale; PHQ-9, depression module of the Patient Health Questionnaire.