Table 2.

Risk ratios for child mortality by birth characteristic

Risk Factor	Median Risk Ratio	Lower Quartile	Upper Quartile
Not in any risk category	1	1	1
First birth to mothers age 18-34	1.2	1.0	1.4
Mother’s age < 18	1.8	1.4	2.0
Mother’s age > 34	1.2	0.6	1.6
Birth interval < 24	1.6	1.3	1.9
Birth order > 3	1.2	1.0	1.4
Mother’s age <18 and birth interval < 24 months	2.8	1.4	3.2
Mother’s age > 34 and birth interval < 24 months	1.8	2.0	2.8
Mother’s age > 34 and birth order > 3	1.4	1.0	1.6
Mother’s age > 34 and birth interval < 24 months and birth order > 3	2.9	1.8	3.5
Birth interval < 24 months and birth order > 3	2.3	1.7	2.7