Table 1 Characteristics of the 410 mother–newborn pairs in present study
From: Prenatal cadmium exposure is associated with shorter leukocyte telomere length in Chinese newborns
Variables | Mean ± SD/ Median (IQR)/ Number (%) |
|---|---|
Infant sex | |
 Male | 206 (50.2) |
 Female | 204 (49.8) |
Gestational age (weeks) | 39.4 ± 1.2 |
Maternal age at delivery(years) | 29.2 ± 3.4 |
Education | |
 Junior school or below | 28 (6.8) |
 High school | 69 (16.8) |
 College or above | 313 (76.4) |
Passive smoking during pregnancy | |
 Yes | 133 (32.4) |
 No | 277 (67.6) |
Prepregnancy BMI (kg/m2) | 21.2 ± 3.0 |
Parity | |
 Primiparous | 339 (82.7) |
 Multiparous | 71 (17.3) |
Hypertensive disorders in pregnancy | |
 Yes | 12 (2.9) |
 No | 398 (97.1) |
Gestational diabetes mellitus | |
 Yes | 41 (10.0) |
 No | 369 (90.0) |
Relative cord blood TL | 0.74 (0.56–0.92) |