Table 1.

Anthropometric characteristics of control and preterm subjects participating in study

	Control (n = 16)	Preterm (n = 14)
Sex: M, F	6, 10	5, 9
Age (yr), mean ± SD	22 ± 1	21 ± 1
Height (cm), mean ± SE*	174.0 ± 1.9	168.1 ± 2.0†
Weight (kg), mean ± SE*	76.3 ± 5.0	71.8 ± 5.4
BMI, mean ± SE*	24.9 ± 1.7	25.5 ± 1.8
Gestational age (wk), mean ± SD	≥36	28 ± 2
Birth weight (g), mean ± SD	>1,500	1,027 ± 296
Surfactant at birth, Y/N/Unk		8/5/1‡
Abnormal chest X-ray, Y/N		8/6
Supplemental O2 at 36 wk, Y/N		6/8
Abnormal chest X-ray and supplemental O2 at 36 wk		4

Definition of abbreviations: BMI = body mass index; F = female; M = male; N = no; Unk = unknown; Y = yes.

^*Sex-adjusted estimates.

^†P = 0.04.

^‡Unknown surfactant administration was due to participation in a clinical trial.