Competency assessment program results for operators using three level serum sample
| Level | Mean±SD | 95% CI | No. of unacceptable results | Total no. |
|---|---|---|---|---|
| A | 50.9±3.2 | 50.2 to 51.5 | 2 | 93 |
| B | 104.7±6.5 | 103.4 to 106.0 | 1 | 93 |
| C | 243.7±10.3 | 241.6 to 245.9 | 1 | 93 |
Abbreviations: SD, standard deviation; CI, confidence interval.