Water disinfection by-products and the risk of specific birth defects: a population-based cross-sectional study in Taiwan

Table 2 The prevalence of any birth defect by water region.

Water region	No. of birth	No. with any birth defects	Prevalence (%)
Region I	111372	717	0.6
Region II	106435	513	0.5
Region III	49503	255	0.5
Region IV	53211	293	0.6
Region V	75528	378	0.5