Table 1.

Characteristics by serum total DDT of the sample of nonsmoking, nulliparous women in Anhui, China, 1996 to 1998

Serum total DDT
Quartile
1st2nd3rd4thTotal
Sample size116117117116466
Serum total DDT (ng/g)
    Mean (SD)13.5 (3.6)23.5 (2.5)34.0 (4.0)57.1 (13.9)32.0 (17.8)
    Median13.923.433.154.027.8
    Range5.5-19.219.2-27.827.8-41.241.6-113.35.5-113.3
Birth year
    Range1970-19771968-19761966-19761963-19761963-1977
    Median19741973197319721973
Mean (SD)
Age (y), n = 46524.5 (1.3)24.8 (1.5)25.0 (1.5)25.3 (1.9)24.9 (1.6)
Height (cm), n = 462157.6 (4.6)157.8 (5.3)157.4 (5.0)157.5 (5.4)157.6 (5.1)
Weight (kg), n = 46250.1 (5.6)49.2 (5.3)49.8 (6.2)47.8 (5.4)49.2 (5.7)
BMI (kg/m2), n = 46220.1 (1.9)19.8 (1.9)20.1 (2.1)19.3 (1.8)19.8 (2.0)