Neural Tube Defects

Time Trend Among Live Births and Fetal Deaths

1992-1997

 

 

Year

Cases

Denominator

Rate/1000

Live Births

& Fetal Deaths

95% Confidence

Interval

1992

192

300055

0.64

0.55,0.74

1993

187

288126

0.65

0.56,0.75

1994

147

277487

0.53

0.45,0.62

1995

150

269118

0.56

0.47,0.65

1996

144

262,480

0.55

0.44,0.65

1997

134

252159

0.53

0.45,0.63

 

 

Source: California Birth Defects Monitoring Program registry data, 1992-1997. A case is diagnosed in a hospital or genetic center by age 1. Data is actively ascertained in 11 California counties representing half the State’s births and reflecting California’s racial and geographical diversity.