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Table 2 Predictors of birth size – 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 6.37 -46.75, 59.49 0.06 -0.23, 0.36 -0.04 -0.22, 0.14 -0.23 -0.54, 0.08
   3–7 years -20.46 -75.93, 35.02 0.03 -0.27, 0.33 -0.05 -0.24, 0.14 -0.24 -0.57, 0.09
   8+ years -37.62 -94.25, 19.01 0.06 -0.25, 0.36 -0.18 -0.38, 0.01 -0.29 -0.65, 0.06
Male infant 122.25 86.68, 157.85 0.82 0.62, 1.01 0.55 0.42, 0.67 0.37 0.17, 0.58
Number of daily cigarettes -14.70 -17.45, -11.95 -0.07 -0.08, -0.05 -0.02 -0.03, -0.01 -0.04 -0.06, -0.03
Parity 99.64 75.78, 123.50 0.21 0.08, 0.34 0.20 0.12, 0.28 0.40 0.27, 0.54
Placental infarction -232.84 -407.70, -57.97 -1.13 -2.07, -0.20    -1.25 -2.20, -0.30
Birth defect 83.94 31.92, 135.95 0.29 0.01, 0.58 0.25 0.07, 0.43   
Gestation 146.13 131.13, 161.13 0.59 0.50, 0.67 0.32 0.27, 0.37 0.51 0.42, 0.59
Uterine bleeding    -0.28 -0.56, 0.01     
   R-squared 0.21   0.15   0.10   0.17  
   n 2,404   2,289   2,461   1,231  
  1. NOTE: 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