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. 2021 Dec 24;32(18):4025–4038. doi: 10.1093/cercor/bhab463

Table 1.

Sample characteristics of postpartum women

Nulliparous Primiparous (n = 41) Multiparous (n = 37) Statistical test
Mean (SD) Mean (SD)
Age 26.7 (4.53) 31.24 (4.09) 32.57 (4.66) Welch F2,75.49 = 17.44, P < .001a
Gestational age in days 276.68 (10.90) 275.43 (10.63) t 76 = 5.12, P = 0.610
Child’s birth weight 3281.10 (454.91) 3431.08 (508.45) t 76 = −1.36, P = 0.173
MPAS 3 weeks pp 86.07 (4.69) 84.05 (5.82) t 76 = 1.69, P = 0.094
 Quality of attachment 40.45 (2.68) 39.11 (3.41) t 76 = 1.93, P = 0.058
 Absence of hostility 22.85 (2.14) 22.76 (1.89) t 76 = 0.20, P = 0.841
 Pleasure in interaction 23.05 (1.72) 22.19 (2.89) t 57.76 = 1.57, P = 0.122
MPAS 6 weeks pp 86.20 (4.33) 83.73 (6.31) t 62.84 = 1.99, P = 0.051
 Quality of attachment 40.35 (31.10) 39.49 (3.45) t 76 = 1.56, P = 0.251
 Absence of hostility 22.80 (1.92) 22.05 (2.31) t 76 = 1.54, P = 0.127
 Pleasure in interaction 23.05 (1.41) 22.19 (2.85) t 51.71 = 1.65, P = 0.104
MPAS 9 weeks pp 85.93 (4.79) 83.65 (6.29) t 66.98 = 1.78, P = .079
 Quality of attachment 40.53 (3.43) 39.22 (3.59) t 76 = 1.64, P = 0.106
 Absence of hostility 22.55 (2.14) 22.16 (2.48) t 76 = 0.74, P = 0.463
 Pleasure in interaction 22.95 (1.68) 22.30 (2.60) t 60.75 = 1.29, P = 0.200
MPAS 12 weeks pp 86.22 (4.66) 85.05 (6.19) t 76 = 0.95, P = 0.348
 Quality of attachment 40.55 (3.34) 40.11 (3.51) t 76 = 0.57, P = 0.573
 Absence of hostility 22.80 (2.42) 22.27 (2.38) t 76 = 0.97, P = 0.336
 Pleasure in interaction 23.25 (1.31) 22.43 (2.89) t 49.51 = 1.58, P = 0.121
EPDS at birth 3.39 (2.48) 4.32 (2.45) t 76 = −.167, P = .099
EPDS 3 weeks pp 4.34 (3.09) 4.27 (2.28) t 73.18 = 0.16, P = 0.908
EPDS 6 weeks pp 3.51 (2.44) 3.70 (2.59) t 76 = −0.33, P = 0.739
EPDS 9 weeks pp 2.71 (2.39) 3.27 (2.68) t 76 = −0.98, P = 0.330
EPDS 12 weeks pp 2.24 (1.88) 2.65 (2.29) t 76 = −0.86, P = 0.394
Percent Percent
Secondary education Fisher’s exact = 9.41, P = 0.027b
 Lowest (<9 years) 11.1
 Middle (10–12 years) 12.5 15 2.8
 Highest (>13 years) 87.5 85 86.1
Birth mode Fisher’s exact = 5.34, P = 0.125
 Spontaneous 68.3 78.4
 Ventouse 9.8
 C-section 12.2 18.9
 Emergency C-section 9.8 2.7
Experience of baby blues (yes) 48.8 54.1 Chi2(1) = 0.22, P = 0.642
Intend to breastfeed at T0 (yes) 92.7 83.8 Fisher’s exact = 5.34, P = 0.295
Breastfeeding at T1 (yes) 87.8 78.4 Chi2(1) = 1.24, P = 0.265
Married (yes) 7.7* 61.0 75.7 Chi2(2) = 30.10, P < 0.000c
Single (yes) 65.4* n. a.

Note: MPAS (Condon and Corkindale 1998); EPDS (Cox et al. 1987); pp: postpartum; n.a.: no statistical analyses possible.

*About 14 nulliparous participants did not indicate their relationship status.

aGames–Howell corrected post hoc: significant differences between nulliparous and both postpartum groups.

bDue to low expected cell counts no post hoc test could be applied.

cSignificant standardized residual exceeding critical value in nulliparous controls.