Table 3. Time trends of neonatal mortality rate (‰ live births) according to combined variable of maternal age and education. State of Rio de Janeiro, 2004–2010.

Maternal category/Education and age	Neonatal mortality rate							Annual percentage change
	2004	2005	2006	2007	2008	2009	2010	(95%CI)
Low education
(1) 11 to 19 years	16.0	11.9	6.8	14.4	10.9	10.2	18.9	2.3% (-10.1–16.3)
(2) 20 to 34 years	10.3	8.7	8.2	9.5	8.8	8.9	7.7	-2.4% (-5.8–1.1)
(3) ≥ 35 years	13.3	16.0	10.2	10.1	13.1	12.9	9.5	-3.8 % (-10.5–3.4)
Intermediate or high education
(4) 11 to 19 years	11.3	11.2	10.8	9.4	9.3	9.5	9.1	-4.0% (-5.8– -2.2)*
(5) 20 to 34 years	8.1	8.1	7.5	7.3	6.7	6.7	6.6	-4.1% (-4.9– -3.2)*
(6) ≥ 35 years	10.1	9.3	8.4	8.8	7.9	7.4	7.3	-5.2% (-6.3– -4.0)*

^* p < 0.05