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Table 3 Birth weight in grams in different subgroups

From: Maternal concentration of polychlorinated biphenyls and dichlorodiphenyl dichlorethylene and birth weight in Michigan fish eaters: a cohort study

Characteristic   n = 168 Crude birth weight in g (5 – 95% values) Adjusted ψ birth weight in g (5 – 95% values)
Gender Male 80 3536 (2679 – 4380) 3491 (3283 – 3698)*
  Female 88 3385 (2693 – 4167) 3272 (3062 – 3481)
Maternal DDE (μg / L) < 5 46 3411 (2693 – 4139) 3278 (2979 – 3577)
  5 -< 15 89 2456 (2637 – 4253) 3365 (3130 – 3600)
  15 -< 25 25 3504 (2722 – 4253) 3440 (3198 – 3685)
  ≥ 25 8 3572 (2807 – 4338) 3278 (3065 – 3815)
Maternal PCB (μg / L) < 5 84 3470 (2693 – 4338) 3520 (3318 – 3723)
  5 -< 15 66 3428 (2608 – 4167) 3509 (3312 – 3707)
  15 -< 25 11 3647 (3033 – 4167) 3537 (3137 – 3937)
  ≥ 25 7 3268 (2722 – 4338) 2958 (2519 – 3397)*
Parity 0 57 3345 (2552 – 4139) 3211 (2999 – 3423)*
  1 65 3474 (2722 – 4253) 3378 (3169 – 3587)
  2 31 3523 (2722 – 4763) 3401 (3168 – 3633)
  ≥ 3 15 3668 (3289 – 4338) 3535 (3246 – 3824)
Gestational age < 37 5 2427 (1361 – 3033) Continuous variable*
  37 -< 40 23 3279 (2693 – 3941)  
  ≥ 40 140 3522 (2792 – 4309)  
Maternal age (years) 15 – 24 41 3388 (2892 – 4082) 3414 (3158 – 3669)
  25 – 29 70 3517 (2693 – 4309) 3396 (3181 – 3610)
  30 and older 57 3432 (2580 – 4536) 3334 (3128 – 3541)
Maternal height (cm) < 155 14 3112 (2552 – 3714) Continuous variable
  155 -< 170 122 3470 (2693 – 4167)  
  ≥ 170 32 3555 (2722 – 4536)  
Maternal education High school 71 3379 (2693 – 4139) 3303 (3083 – 3523)
  College 44 3569 (2722 – 4423) 3433 (3196 – 3670)
  College plus 53 3467 (2608 – 4309) 3407 (3152 – 3662)
Maternal smoking status during pregnancy Yes 22 3175 (2552 – 3969) 3294 (3007 – 3581)
  No 146 3499 (2722 – 4253) 3468 (3300 – 3636)
Child birth year 1968 – 1972 48 3554 (2722 – 4253) 3406 (3200 – 3612)
  1973 – 1982 98 3420 (2693 – 4253) 3333 (3125 – 3540)
  > 1983 22 3405 (2608 – 4536) 3405 (3120 – 3689)
  1. * p-value < 0.05 ψ Adjusted for all other variables in Table 3