2 × 2 table comparing gold standard (SP) v index method (chart abstraction) responses
| Standardised patient | ||
|---|---|---|
| Documented (% total responses) | Not documented (% total responses) | |
| TP – true positive; FN – false negative; FP – false positive; TN – true negative | ||
| Chart abstraction | ||
| Reported | TP = 2153 (48.3%) | FP = 285 (6.4%) |
| Not reported | FN = 916 (20.5%) | TN = 1106 (24.8%) |