DNA methylation associated with postpartum depressive symptoms overlaps findings from a genome-wide association meta-analysis of depression

Table 1 PREG-PPD sample characteristics

Demographics
Total N	92
African-American (%)	42 (45.7)
Age	29.7 (4.4)
Early gestation BMI	27.4 (7.3)
First pregnancy (%)	59 (64.8)
Gestational length (days)	274.5 (13.0)
Preterm birth (%)	6 (6.5)
Days postpartum^a	56.5 (36.7)
Current smoker (%)	7 (7.6)
Depressive phenotypes
Positive lifetime history of MD (%)^b	16 (18.0)
Current postpartum depressive symptom load^c	5.4 (5.9)

PREG-PPD Pregnancy, Race, Environment, Genes study Postpartum Extension; MD major depression
*All values are mean (standard deviation) unless otherwise noted with '(%)' to indicate N (%) or 'N' to indicate count. Percentages were calculated using valid responses
^aNumber of days postpartum when study visit (i.e., blood draw and questionnaire collection) occurred
^bAssessed using the Composite International Diagnostic Interview-Short Form
^cAssessed using the Edinburgh Postnatal Depression Scale

ISSN: 1868-7083