Table 2.
Rates of major errors in different parts of the process of prescribing and giving acetylcysteinea.
| Operation | Rate of major error | Approximate 95% confidence intervals |
|---|---|---|
| Calculation | 3/57 (5%) | 2.3–8.2% |
| Drawing up acetylcysteine and adding it to glucose | 7/184 (3%) | 1.0–6.6% |
| Mixing | 12/128 (9%) | 4.3–14.4% |
| Sampling | 1/184 (0.5%) | 0.0–1.6% |
| Analysis | assumed zero |
a
Major errors are assumed when values differ by more than 50% from anticipated values, or when the difference between two samples (pre and postinfusion) is more than 50%.