Table 7.
Ancillary exploratory analyses
| Control group n (%) or mean (SD) |
Intervention group n (%) or mean (SD) |
Unadjusted OR or Mean difference (95% CI) |
Adjusted* OR or Mean difference (95% CI) |
Adjusted* OR or Mean difference (95% CI) with imputation of missing data |
|
|---|---|---|---|---|---|
| Primary outcome severity | |||||
| No clinically significant symptoms or diagnoses | 106 (59.9) | 118 (63.1) | Ref. | Ref. | Ref. |
| PHQ-9 or GAD-7 score ≥5, but do not meet all DSM IV criteria for PCMD | 55 (31.1) | 51 (27.3) | 0.83 (0.52 to 1.33) | 0.56 (0.34 to 0.91) | 0.58 (0.35 to 0.97) |
| DSM IV PCMD prior 30 days | 16 (9.0) | 18 (9.6) | 1.01 (0.49 to 2.08) | 0.61 (0.28 to 1.28) | 0.58 (0.27 to 1.21) |
| Differential effects | |||||
| Unsettled infant behaviour | |||||
| Among infants without unsettled behaviours at baseline | 22 (31.9) | 37 (46.8) | 1.88 (0.96 to 3.68) | 1.82 (0.97 to 3.41) | 1.64 (0.87 to 3.10) |
| Among infants with unsettled behaviours at baseline | 65 (63.1) | 55 (51.9) | 0.63 (0.36 to 1.09) | 0.56 (0.35 to 0.88) | 0.58 (0.36 to 0.94) |
| Baby usually sleeps in parents’ room but not in parents’ bed OR in separate room (0) vs in parents’ bed (1) | |||||
| Among infants without unsettled behaviours at baseline | 5 (7.14) | 11 (13.8) | 2.07 (0.68 to 6.29) | 1.79 (0.63 to 5.07) | 1.72 (0.40 to 4.91) |
| Among infants with unsettled behaviours at baseline | 8 (7.55) | 5 (4.7) | 0.60 (0.19 to 1.90) | 0.53 (0.19 to 1.46) | 0.54 (0.19 to 1.52) |
| In the evening, baby usually falls asleep in cot alone or being patted by an adult until calm (0) vs while being rocked, fed, held or in bed next to parent (1) | |||||
| Among infants without unsettled behaviours at baseline | 19 (27.1) | 30 (37.5) | 1.61 (0.80 to 3.22) | 1.43 (0.72 to 2.83) | 1.31 (0.66 to 2.60) |
| Among infants with unsettled behaviours at baseline | 38 (35.9) | 33 (30.8) | 0.80 (0.45 to 1.41) | 0.74 (0.40 to 1.35) | 0.76 (0.41 to 1.38) |
| Use ‘routines’ to help baby to prepare for sleep occasionally sometimes/most nights (0) vs never (1) | |||||
| Among infants without unsettled behaviours at baseline | 3 (4.3) | 6 (7.5) | 1.81 (0.43 to 7.53) | 2.07 (0.52 to 8.20) | 2.11 (0.51 to 8.70) |
| Among infants with unsettled behaviours at baseline | 4 (3.8) | 7 (6.5) | 1.78 (0.51 to 6.29) | 2.06 (0.62 to 6.87) | 1.96 (0.58 to 6.58) |
| Day-to-day interactions in the intimate partner relationship | |||||
| Considerate partner behaviours | |||||
| Among women with optimal intimate partner relationship at baseline | 6.9 (1.5) | 6.8 (1.6) | −0.19 (−0.67 to 0.30) | −0.20 (−0.61 to 0.21) | −0.19 (−0.60 to 0.23) |
| Among women with suboptimal intimate partner relationship at baseline | 5.8 (2.3) | 5.6 (2.2) | −0.13 (−0.77 to 0.51) | −0.02 (−0.75 to 0.79) | −0.02 (−0.76 to 0.72) |
| Emotionally abusive partner behaviours | |||||
| Among women with optimal intimate partner relationship at baseline | 0.29 (0.63) | 0.15 (0.36) | −0.15 (−0.32 to 0.02) | −0.14 (−0.28 to −0.01) | −0.15 (−0.29 to −0.01) |
| Among women with suboptimal intimate partner relationship at baseline | 0.60 (0.81) | 0.71 (0.86) | 0.11 (−0.11 to 0.34) | −0.05 (−0.24 to 0.34) | −0.01 (−0.29 to 0.30) |
Bold typeface indicates odds ratios or mean differences that are statistically significant.
*Adjusted for past psychiatric illness, PHQ-9 scores, GAD-7 scores, unsettled infant behaviour, IBM Care scores, and SEIFA index at baseline and practical and emotional support and experience of any adverse life event at endline and for cluster effects.
DSM IV, Diagnostic and Statistical Manual of Mental Disorders, fourth Edition; GAD, Generalised Anxiety Disorder; PCMD, postpartum common mental disorders; PHQ, Patient Health Questionnaire.