Table 2.
Median (IQR) of EPDS and PHQ9 summary scores, and numbers (percentages) of women with depression symptoms during the postpartum period.
| Presence of depression symptomsa | Total (N = 1,551) | Lactational mastitis | p-valueb | |
|---|---|---|---|---|
| No (N = 1,404) | Yes (N = 147) | |||
| Summary score of EPDS | 5 [3–7] | 5 [3–7] | 6 [3–8] | <0.01 |
| Summary score of PHQ9 | 2 [1–4] | 2 [1–4] | 3 [1–5.5] | <0.01 |
| Number of EPDS ≥9 or PHQ9 ≥ 5 | 441 (28.4%) | 385 (27.4%) | 56 (38.1%) | 0.008 |
| Number of EPDS ≥ 9 | 265 (17.1%) | 230 (16.4%) | 35 (23.8%) | 0.031 |
| Number of PHQ9 ≥ 5 | 385 (24.8%) | 336 (23.9%) | 49 (33.3%) | 0.016 |
| With self-harm or suicidal ideation | 110 (7.1%) | 93 (6.6%) | 17 (11.6%) | 0.026 |
| With self-harm ideation | 78 (5.0%) | 66 (4.7%) | 12 (8.2%) | 0.068 |
| With suicidal ideation | 85 (5.5%) | 73 (5.2%) | 12 (8.2%) | 0.133 |
aData are shown as median [IQR] or number (percentage). bThe p-values were calculated by the t-test or chi-square test. IQR, interquartile range; EPDS, Edinburg Postnatal Depression Scale; PHQ9, Patient Health Questionnaire 9.