Table 3. Incidence of Obtaining a “Fail” Result for the Compounds Studied and Each Element Analyzed, with CI Values Expressed as Percentages for Ease of Interpretation.
| sample size | fail results | fail results (%) | 95% CI for fail results (%) | |
|---|---|---|---|---|
| all | 436 | 47 | 10.78 | (8.18–14.06) |
| dl-tryptophan | 81 | 6 | 7.41 | (3.15–15.53) |
| succinimide | 87 | 10 | 11.49 | (6.18–20.07) |
| 2-hydroxybenzimidazole | 90 | 11 | 12.22 | (6.8–20.74) |
| bisoctrizole | 95 | 13 | 13.68 | (8.04–22.15) |
| diacetylpyridine | 83 | 7 | 8.43 | (3.89–16.66) |
| carbon | 146 | 24 | 16.44 | (11.24–23.35) |
| hydrogen | 146 | 3 | 2.05 | (0.43–6.14) |
| nitrogen | 144 | 20 | 13.89 | (9.1–20.56) |