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Table 5 Distribution of found and missed birth defects in the Lombardy Birth Defect Registry vs. birth certificates

From: Descriptive epidemiology of selected birth defects, areas of Lombardy, Italy, 1999

 

Birth defects identified by Registry

Birth defects identified by birth certificates

Yes

No

Totals

Yes

23

2

25

No

375

31*

406

Totals

398

33

431*

  1. * The number of cases missed by both sources (31) and the total number of birth defects (431) were estimated by the capture-recapture method.