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. 2013 Mar 25;16(8):1414–1418. doi: 10.1017/S1368980013000736

Table 1.

Maternal characteristics of the study population, stratified by pre-pregnancy BMI; Antidepressant Use During Pregnancy Study, Pittsburgh, PA, USA

Total (n 129) BMI < 25·0 kg/m2 (n 64) BMI = 25·0–29·9 kg/m2 (n 29) BMI ≥ 30·0 kg/m2 (n 36)
Characteristic n % n % n % n % P value*
Age (years) 0·14
Mean 30·3 30·6 31·6 28·7
sd 5·6 5·8 4·4 5·9
Race/ethnicity
White 103 79·8 56 87·5 23 79·3 24 66·7
African American 22 17·1 6 9·4 6 20·7 10 27·8
Other 4 3·1 2 3·1 0 0·0 2 5·6 0·10
Parity
0 43 33·3 33 51·6 23 79·3 30 83·3
1–6 86 66·7 31 48·4 6 20·7 6 16·7 <0·01
Educational status
≤High school 23 17·8 5 7·8 4 13·8 14 38·9
Some college 25 19·4 12 18·8 4 13·8 9 25·0
College degree 45 34·9 25 39·1 9 31·0 11 30·6
Post-graduate education 36 27·9 22 34·4 12 41·4 2 5·6 <0·01
Marital status
Married 95 73·6 48 75·0 25 86·2 22 61·1
Unmarried 34 26·4 16 25·0 4 13·8 14 38·9 0·07
Smoking status
Non-smoker 110 85·3 56 87·5 27 93·1 27 75·0
Smoker 19 14·7 8 12·5 2 6·9 9 25·0 0·10
Employment status
Employed 73 56·6 37 57·8 17 58·6 19 52·8
Unemployed 56 43·4 27 42·2 12 41·4 17 47·2 0·86
Major depression†
Not depressed 96 74·4 53 82·8 22 75·9 21 58·3
Depressed 33 25·6 11 17·2 7 24·1 15 41·7 0·03

*Based on Student's t test for maternal age and χ 2 test for the other covariates.

†As measured by the Structured Clinical Interview for DSM-IV( 16 ).