Table 2. Characteristics of infants in the study population.

	Bulacan	Bangkok	Singapore	p
N	315	106	61
Gestation (wks)—mean (SD)	38.4 (2.1)	38.1(2.0)	38.5.(1.6)	ns
Male (%)	56.2	56.7	55.7	ns
Weight (g)	2888.6 (413.6)	2951.7 (582.7)	3092.0 (499.4)*	0.050
Length (cm)	48.8 (2.7)	48.6 (2.6)	48.6 (1.9)	ns
Head circ (cm)	33.0 (1.6)	32.8 (1.6)	33.8 (1.5)*	0.050
Respiratory distress syndrome (%)	0.6	0.9	1.6	ns
Transient tachypnea of newborn (%)	1.6	4.7**	3.3	ns
Meconium aspiration syndrome (%)	0.6	1.9	0.0	ns
Asphyxia (%)	1.9	0.0	0.0	ns
Jaundice (%)	5.7	0.9	13.1**	0.004
Sepsis (%)	10.5**	0.0	0.0	0.001
Necrotizing enterocolitis (%)	0.3	0.0	0.0	ns

^*by one way analysis of variance

^**by Chi-square analysis

ns—not significant