The associations of birth intervals with small-for-gestational-age, preterm, and neonatal and infant mortality: a meta-analysis

Table 2 Prevalence of adverse newborn outcomes in each study, among newborns included in the analysis

Study	SGA <10%	Preterm	Term-SGA	Preterm-AGA	Preterm-SGA	Neonatal Mortality Rate*	Infant mortality Rate*
Brazil (1982) [11]	21.1	5.0	12.4	3.9	1.0	21	40
Brazil (1993) [12]	20.3	10.2	15.4	9.3	1.0	16	24
Brazil (2004) [13]	16.7	16.1	11.8	14.3	1.7	11	19
Philippines (1983) [15]	25.3	17.0	22.7	14.4	2.6	13	33
Zimbabwe (1997) [14]	32.8	7.6	29.9	4.7	2.9	9**	78

*per 1000 live births
**Enrollment of newborns occurred up to 96 hours after birth, and the study may have missed neonatal deaths prior to enrollment.
SGA = small-for-gestational-age, AGA = appropriate-for-gestational-age. Preterm = below 37 completed weeks of gestation.

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