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Table 3 Predictors of birth size among infants without birth defects – multiple linear regression

From: Maternal Fish Consumption and Infant Birth Size and Gestation: New York State Angler Cohort Study

  Weight Length Head Circumference Chest Circumference
Covariate         
  β Coefficient 95% CI β Coefficient 95% CI β Coefficient 95% CI β Coefficient 95% CI
Duration of maternal fish consumption         
   1–2 years 13.49 -41.42, 68.41 0.09 -0.21, 0.39 0.04 -0.15, 0.22 -0.16 -0.48, 0.16
   3–7 years -14.45 -72.70, 43.80 0.12 -0.20, 0.44 -0.03 -0.23, 0.16 -0.29 -0.64, 0.06
   8+ years -37.03 -96.66, 22.60 0.06 -0.27, 0.38 -0.15 -0.35, 0.05 -0.49 -0.87, -0.11
Male infant 117.04 79.91, 154.17 0.78 0.58, 0.98 0.56 0.43, 0.68 0.37 0.16, 0.59
Number of daily cigarettes -14.79 -17.63, -11.95 -0.07 -0.08, -0.05 -0.02 -0.03, -0.01 -0.05 -0.06, -0.03
Parity 97.22 72.11, 122.34 0.23 0.09, 0.37 0.21 0.12, 0.29 0.37 0.23, 0.52
Placental infarction -316.55 -511.55, -121.56 -1.57 -2.63, -0.51    -1.47 -2.56, -0.37
Gestation (weeks) 144.43 128.68, 160.17 0.56 0.47, 0.64 0.32 0.26, 0.37 0.49 0.40, 0.58
R-squared 0.21 0.14 0.11 0.17     
n 2,079 2,022 2,137 1,050     
  1. NOTE: Restricted to infants without birth defects noted in hospital delivery records (n = 2,247). Duration of maternal fish consumption refers to the number of years eating fish from Lake Ontario and its tributaries between 1955 and infant's year of birth. CI = confidence interval; n = sample size for each model