TABLE 2.

ODDS RATIOS FOR HOSPITALIZATION FOR RESPIRATORY ILLNESS FROM AGES 18 TO 26 AS A FUNCTION OF BIRTH WEIGHT

		Unadjusted Estimated Association
Exposure	n (%)	OR	95% CI	P Value	P Value
NBW	21,229 (93.9)	Referent	–	–
MLBW	1,233 (5.5)	1.34	1.17–1.53	<0.0005	<0.0005
VLBW	140 (0.6)	1.83	1.28–2.62	0.001
		Adjusted Estimated Association*
NBW	21,229 (93.9)	Referent	–	–
MLBW	1,233 (5.5)	1.26	1.10–1.44	0.001	<0.0005
VLBW	140 (0.6)	1.68	1.16–2.42	0.01

Definition of abbreviations: CI = confidence interval; LBW = low birth weight; NBW = normal birth weight; OR = odds ratio; VLBW = very low birth weight.

^*Adjusted for birth year, sex, maternal age, race, residence, and marital status.