Table 3 Birth weight in grams in different subgroups
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) |