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Table 5 Role of examined mediators in the relation between unintended pregnancy and maternal mental health

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
Depressive symptoms OR1 OR2 % change OR1 OR2 % change
1 year postpartum 1.19 1.10 47.4 1.15 1.05 66.7
2 years postpartum 0.95 0.93 NA 1.01 0.95 NA
Overall pregnancy intention 1.07 1.02 71.4 1.08 1.00 100.0
Parenting stress score β1 β2 % change β1 β2 % change
1 year postpartum 1.09 0.74 32.1 1.24 0.83 33.1
2 years postpartum 0.88 0.71 19.3 1.35 1.06 21.5
Overall pregnancy intention 0.96 0.71 26.0 1.25 0.91 27.2
  1. Note: mediators were marital conflict, fathers’ participation in childcare, and mothers’ knowledge of infant development.
  2. OR1: odds ratio in base model; OR2: odds ratio in model adjusted for mediating variables; β1: mean difference in base model; β2: mean difference in model adjusted for mediating variables.
  3. % change was calculated as (OR1-OR2)/(OR1-1)*100, or (β1-β2)/(β1)*100.