Table 2.

Birth prevalence (/1,000) of Neural Tube Defects (NTD) by socioeconomic indicators, Ontario 1994-2009.

Quintiles		Mean Maternal Age	N	Prevalence NTD
Household Income
	Q1 = Lowest	27.8	1,330	2.72
	Q2	28.7	1,047	2.43
	Q3	29.4	949	2.23
	Q4	30.4	882	2.08
	Q5 = Highest	30.9	733	2.10
% With University Degree
	Q1 = Lowest	27.4	1,072	2.61
	Q2	28.6	1,007	2.45
	Q3	29.3	973	2.25
	Q4	30.2	939	2.22
	Q5 = Highest	31.5	827	2.09