Table 5.

Odds ratios and 95% confidence intervals for the predictors of infants being born small for gestational-age v. average for gestational age in the Birth to Twenty (Bt20) and Cebu Longitudinal Health and Nutrition Survey (CLHNS) cohorts

Small for gestational age		Bt20 (n 758)				CLHNS (n 2161)
		Baseline		Adjusted		Baseline		Adjusted
Variable	Category	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
SES index		0·89	0·72, 1·11	0·83	0·67, 1·04	0·89*	0·79, 0·99	0·92	0·82, 1·03
Maternal height		–	–	0·96*	0·93, 0·99	–	–	0·94***	0·92, 0·96
Sex	Female	–	–	0·67	0·43, 1·05	–	–	0·80*	0·65, 0·99
	Male	–	–	1·00	ref.	–	–	1·00	ref.
Parity	Non-primaparous	–	–	0·47**	0·29, 0·74	–	–	0·59***	0·47, 0·76
	Primaparous	–	–	1·00	ref.	–	–	1·00	ref.

SES, socio-economic status.

Baseline model controlled for SES index only; adjusted model controlled for SES index, maternal height, sex and parity.

^*Significance: P<0·05,

^**P<0·01,

^***P<0·001;

ref. is the reference category.