TABLE 4.
Rocky Mountain Region Pilot Studies of FAS & PFAS prevalence: combined data from three samples (rate per 1,000)
| Diagnosis | Oversample of children ≤ 10th centile on height, weight, or OFC | Randomly-Selected Children Only (n=194) | Combined rate from consented sample (n=1278) and estimated cases in the non-consented sample (n=1099) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (a) n | Rate per all children in 1st grade (n=2377)a | Rate for all children with consent for study (n=1278)b | Mid-point | n | Proportion of FASD cases in random sample | (b) Estimated case in non-consented population (n=1099) | Rate of FASD cases from random samplec | 95% Confidence Intervals | (a + b) Total Estimated Cases n | Estimated rate for all enrolled studentsd | 95% Confidence Intervals | |
| FAS | 7 | 2.9 | 5.5 | 4.2 | 2 | .0103 | +11 | 10.3 | 0 to 24.5 | 18 | 7.5 | 4.1 to 11.1 |
| PFAS | 19 | 7.9 | 14.9 | 11.4 | 4 | .0206 | +23 | 20.6 | .62 to 40.6 | 42 | 17.7 | 12.4 to 22.9 |
| FAS & PFAS combined | 26 | 10.9 | 20.3 | 15.6 | 6 | .0309 | +34 | 30.9 | 6.6 to 55.3 | 60 | 25.2 | 18.9 to 31.5 |
a
Rate per 1,000 children based on the entire enrollment in 1st grade classes, denominator = 2377.
b
Rate per 1,000 children based on the sample screened, denominator = 1278.
c
Rate per 1,000 children based on the randomly-selected children only, denominator = 190.
d
Rate per 1,000 children calculated from FASD cases diagnosed in consented sample added to the estimated cases in the non-consented sample utilizing the proportional diagnostic distribution of FASD cases from the randomly-selected children. Denominator is 2377.