TABLE 2.

Distributions of Fetal and Early Childhood Growth Outcomes and DDT Concentrations

Characteristic	No.	Mean ± SD	Median	25th, 75th Percentile
DDT concentrations (lipid-adjusted, in μg/g lipid)
p,p′-DDE	399	6.85 ± 4.80	5.88	3.90, 8.56
p,p′-DDT	399	1.93 ± 1.25	1.61	1.11, 2.30
o,p′-DDT	399	0.27 ± 0.22	0.20	0.12, 0.35
Σ DDT	399	9.05 ± 5.60	7.95	5.68, 11.15
Fetal growth outcomes
Birth weight (g)	399	3298 ± 448	3345	2977, 3600
Gestational age-adjusted  birth weight (z-score)	399	−0.25 ± 0.88	−0.27	−0.91, 0.37
Gestational age (d)	399	281 ± 12	281	272, 288
Birth length (cm)	398	51.2 ± 2.5	50.8	49.5, 52.7
Head circumference (mm)	397	339 ± 14	343	330, 349
Five-year growth outcomes
Sitting height (cm)	399	60.4 ± 2.8	60.3	58.7, 62.3
Standing height (cm)	397	110 ± 4	110	107, 113
Sex- and race-standardized height (z-score)	398	49.7 ± 9.7	50	43, 56
Sex- and race-standardized weight (z-score)	399	49.2 ± 9.2	48	43, 54
Head circumference (mm)	389	510 ± 15	508	498, 521
Biacromial distance (mm)	389	245 ± 16	246	236, 255
Chest breadth (mm)	389	177 ± 9.0	176	170, 183
Chest depth (mm)	389	135 ± 10.9	134	128, 142
Bi-iliac distance (mm)	389	174 ± 10	174	167, 180

SD indicates standard deviation.