Table 1.

Incidence of CF in Wisconsin by Diagnostic Criteria

NumberIncidence95% CI
Number of births in Wisconsin657 630*
April 15, 1985 to June 30, 1994
Classical CF1571:41893603, 4930
Sweat CI: ≥60 mmol/L
Signs/symptoms of CF
CF by autopsy 21:41363561, 4862
Sweat CI: 40–60 mmol/L 21:40852520, 4797
2 CFTR mutations
Signs/symptoms of CF
Sweat CI: 40–60 mmol/L 21:40353480, 4733
1 CFTR mutation
Signs/symptoms of CF
Sweat CI: 40–60 mmol/L 31:39623421, 4641
No CFTR mutations identified
Signs/symptoms of CF
Sweat ≥60 mmol/L 11:39383402, 4611
1 CFTR mutation
No signs/symptoms
Sweat CI: 40–60 mmol/L 61:38013292, 4438
1 CFTR mutation
No signs/symptoms
Sweat CI: 40–60 mmol/L 51:36953206, 4304
No mutation information
No signs/symptoms
Adjustment for white births (by mother's race)
Number of white births (April 15, 1984 to June 30, 1999)559 682*
Sweat CI: ≥60 mmol/L1491:37563219, 4441
Signs/symptoms of CF
White
  • From Maternal and Child Health Statistics Wisconsin, Wisconsin Department of Health and Social Services, Division of Health (1985–1994).