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Table 3 Odds ratio of maternal depressive symptoms according to pregnancy intention

From: Impact of unintended pregnancy on maternal mental health: a causal analysis using follow up data of the Panel Study on Korean Children (PSKC)

  PSM IPTW
  OR 95% CI P value OR 95% CI P value
Time of inquiry       
Antenatal* 1.32 1.01–1.72 0.0394 1.17 0.93–1.47 0.1781
1 month postpartum 1.59 1.06–2.40 0.0265 1.48 1.05–2.07 0.0252
4 months postpartum 1.30 0.98–1.71 0.0685 1.36 1.08–1.72 0.0101
1 year postpartum 1.19 0.90–1.56 0.2203 1.15 0.91–1.46 0.2394
2 years postpartum 0.95 0.71–1.28 0.7390 1.01 0.79–1.30 0.9215
Pregnancy intention x time of inquiry§    0.1819    0.2402
Overall pregnancy intention 1.22 1.02–1.46 0.029 1.20 1.03–1.40 0.0212
  1. *Antenatal depression was measured immediately after childbirth. §The interaction between pregnancy intention and time of inquiry.
  2. PSM: propensity score matching; IPTW: inverse probability of treatment weighted; OR: odds ratio; CI: confidence interval.