TABLE 1.
Characteristics of 291 nulligravid women in Anhui, China, 1996–1998
| Values | |
| Age, y | 24.9 ± 1.51 |
| Height, m | 1.57 ± 0.05 |
| Weight, kg | 49.1 ± 6.0 |
| BMI, kg/m2 | 19.8 ± 2.1 |
| Total DDT,2 ng/g | 34.4 ± 17.9 |
| Vitamin B-6, nmol/L | 39.2 ± 13.8 |
| Folate, mol/L | 10.1 ± 4.5 |
| Vitamin B-12, pmol/L | 364.2 ± 129.9 |
| Education, n (%) | |
| Elementary school | 2 (0.7) |
| Middle school | 198 (68.0) |
| High school | 90 (30.9) |
| College or above | 1 (0.3) |
| Dust exposure, n (%) | 281 (96.6) |
| Noise exposure, n (%) | 268 (92.1) |
| Perceived stress of living, n (%) | |
| None or light | 169 (58.1) |
| Moderate | 115 (39.5) |
| High | 7 (2.4) |
| Tea drinker, n (%) | 134 (46.1) |
| Husband smokes, n (%) | 166 (57.0) |
| Low DDT (n = 145), n (%) | |
| Vitamin B-6 concentration <30 nmol/L | 32 (22.1) |
| Vitamin B-12 concentration <258 pmol/L | 28 (19.3) |
| Folate concentration <6.8 nmol/L | 27 (18.6) |
| No. of B-vitamin deficiencies, n (%) | |
| 0 | 80 (55.2) |
| 1 | 47 (32.4) |
| ≥2 | 18 (12.4) |
| High DDT (n = 146), n (%) | |
| Vitamin B-6 concentration <30 nmol/L | 45 (30.8) |
| Vitamin B-12 concentration <258 pmol/L | 20 (13.8) |
| Folate concentration <6.8 nmol/L | 33 (22.6) |
| No. of B-vitamin deficiencies, n (%) | |
| 0 | 79 (54.5) |
| 1 | 38 (26.2) |
| ≥2 | 28 (19.3) |
1
Mean ± SD (all such values).
2
DDT, 1,1,1-trichloro-2,2,bis(p-chlorophenyl)ethane.