Postpartum depression present | 2 (2.8) | 5 (10.6) | 4 (16.0) | Mantel-Haenszel test for linear association value = 5.39; df = 1; p = 0.021 |

Current maternal depression present | 5 (6.9) | 11 (23.4) | 3 (12.0) | Mantel-Haenszel test for linear association value = 1.9; df = 1; p = 0.17 |

Maternal IQ <70 | 5 (6.9) | 11 (23.4) | 5 (20.0) | Mantel-Haenszel test for linear association value = 4.6 df = 1; p = 0.032 |

Child’s birth weight (kg) | Mean 2.92 | Mean 2.79 | Mean 2.45 | ANOVA F ratio = 10.22 |

(SD 0.48) | (SD 0.43) | (SD 0.37) | p = 0.001 |

Supplemental breast feeding (months) | Mean 5.8 | Mean 6.5 | Mean 4.6 | ANOVA F ratio = 4.49 |

(SD 2.8) | (SD 2.3) | (SD 2.2) | p = 0.012 |