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Table 4 Association between maternal job strain during pregnancy and infant MDI stratified by sex a

From: Effect of maternal job strain during pregnancy on infant neurodevelopment by gender at 6 and 12 months: Mothers and Children’s Environmental Health (MOCEH) study

Time Group MDI
Total Boys Girls
N Mean b β SE P value N Mean b β SE P value N Mean b β SE P value
6 months of age High strain 77 99.6 0.79 1.79 0.66 35 98.4 −0.31 2.68 0.91 42 101.1 2.14 2.47 0.39
Active jobs 90 97.6 −1.25 1.71 0.47 54 95.9 −2.85 2.34 0.23 36 99.5 0.61 2.55 0.81
Passive jobs 64 96.1 −2.76 1.91 0.15 30 96.5 −2.16 2.78 0.44 34 95.8 −3.10 2.67 0.25
Low strainc 75 98.8 Ref. - - 38 98.7 Ref. - - 37 98.9 Ref. - -
12 months of age High strain 66 99.9 −0.16 2.94 0.96 35 96.4 −9.46 4.43 0.03 31 102.5 8.25 3.88 0.04
Active jobs 71 100.6 0.51 2.86 0.86 41 98.6 −7.30 4.08 0.08 30 103.0 8.74 3.94 0.03
Passive jobs 60 100.5 0.47 3.02 0.88 27 101.9 −3.98 4.61 0.39 33 99.8 5.56 3.86 0.15
Low strainc 55 100.1 Ref. - - 28 105.8 Ref. - - 27 94.2 Ref. - -
  1. aThe general linear model was used to find the association adjusted for sex, birth weight, maternal age, gestational age, maternal education, and family income.
  2. bAdjusted means for sex, birth weight, maternal age, gestational age, maternal education, and family income.
  3. cReference group (Ref.).
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