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Table 3 Odds ratio (OR) and 95% confidence interval (CI) for maternal serum brain-derived neurotrophic factor (BDNF, ng/mL) levels in early pregnancy in relation to antepartum depressive symptoms, Lima, Peru 2012

From: Association of decreased serum brain-derived neurotrophic factor (BDNF) concentrations in early pregnancy with antepartum depression

BDNF levels (ng/ ml)

Antepartum depression

Unadjusted OR (95% CI)

Adjusted OR (95% CI)*

Yes (N =  280)

No (N =  688)

n

%

N

%

Quartile 1 (<17.32)

75

26.8

167

24.3

1.68 (1.11, 2.54)

1.51 (0.99, 2.30)

Quartile 2 (17.32- 20.92)

78

27.9

164

23.8

1.78 (1.18, 2.68)

1.66 (1.09, 2.52)

Quartile 3 (20.92- 25.31)

76

27.1

166

24.1

1.71 (1.14, 2.59)

1.67 (1.10, 2.53)

Quartile 4 (>25.31)

51

18.2

191

27.8

Reference

Reference

P - value for linear trend

  

0.019

0.082

Quartile 1– 3 (≤25.31)

229

81.8

497

72.2

1.73 (1.22, 2.44)

1.61 (1.13, 2.30)

Quartile 4 (>25.31)

51

18.2

191

27.8

Reference

Reference

  1. *Adjusted for maternal age, parity, and early pregnancy body mass index.