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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Early Hum Dev. 2018 Apr 4;120:31–39. doi: 10.1016/j.earlhumdev.2018.03.009

Table 2.

Prevalence of maternal mental health challenges and differences in maternal mental health characteristics among full-term compared to preterm mother-infant dyads.

Total Sample (n=84) Preterm Group (n=37) Full-term Group (n=47)
Mean ± SD; or N (%) *p value for univariate analysis ** p value for multivariate analysis
Maternal Mental Health
Depression (EPDS) 6.39 ±3.92 7.08 ±4.23 5.85 ±3.61 .21 .17
 Postpartum Depression symptoms** 17 (20%) 11 (30%) 6 (13%) .055 .02
Stress (PSS) 28.62 ±8.32 26.70 ±5.42 30.13 ±9.83 .009 .01
State Anxiety (STAI 1) 30.15 ±11.31 30.11 ±8.52 30.19 ±13.19 .78 .69
Trait Anxiety (STAI 2) 30.08 ±9.01 30.39 ±7.89 29.85 ±10.00 .98 1.0
Post-traumatic Stress (Modified PPQ) 6.23 ±7.38 8.25 ±7.57 4.68 ±6.92 .03 .03
 PTSD symptoms*** 6 (7%) 3 (8%) 3 (6%) .50 .90
Psychological Distress****
Psychologically Distressed 54 (64%) 26 (70%) 28 (60%) .31 .58
*

p-value is from investigations of differences in maternal mental health among full-term compared to preterm mother-infant dyads using independent samples t tests (for continuous variables) and chi-square analysis (for categorical variables). Bolded values indicate significance, p <.05.

**

p-value is from investigations of differences in maternal mental health among full-term compared to preterm mother-infant dyads using linear (for continuous variables) and logistic (for categorical variables) regression models, controlling for race, type of delivery, and siblings, p<.05. Note: type of delivery, race, and number of children were all related to each (p<.05) in chi-square analysis but all were included in the model. Analyses re-run controlling only for c-section and the findings remained largely unchanged.

**

Postpartum depression symptoms defined as having a score of >10 on the EPDS

***

PTSD symptoms defined as having a score of >19 on the Modified PPQ

****

Psychological distress was defined as scoring above the 75th percentile on the PSS, EPDS, STAI (state), or modified PPQ.

Abbreviations: EPDS: Edinburgh Postnatal Depression Scale; PSS: Parental Stress Scale; STAI: State and Trait Anxiety Scale; Modified PPQ: Modified Perinatal Post-traumatic Stress Questionnaire