Table 1.
Unresolved and resolved* performance with Chlamydia Rapid Test versus polymerase chain reaction. Figures are percentages (numbers) (binomial 95% exact confidence intervals)
| Site | Sensitivity (%) | Specificity (%) | Positive predictive value | Negative predictive value | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Unresolved | Resolved | Unresolved | Resolved | Unresolved | Resolved | Unresolved | Resolved | ||||
| 1 (n=454) | 90.0 (18/20) (68.3 to 98.8) | 90.0 (18/20) (68.3 to 98.8) | 98.2 (426/434) (96.4 to 99.2) | 98.2 (426/434) (96.4 to 99.2) | 69.2 (18/26) (48.2 to 85.7) | 69.2 (18/26) (48.2 to 85.7) | 99.5 (426/428) (98.3 to 99.9) | 99.5 (426/428) (98.3 to 99.9) | |||
| 2 (n=757) | 80.0 (72/90) (70.2 to 87.7) | 80.9 (72/89) (71.2 to 88.5) | 98.7 (658/667) (97.4 to 99.4) | 98.7 (659/668) (97.5 to 99.4) | 88.9 (72/81) (80.0 to 94.8) | 88.9 (72/81) (80.0 to 94.8) | 97.3 (658/676) (95.8 to 98.4) | 97.5 (659/676) (96.0 to 98.5) | |||
| Total (n=1211) | 81.8 (90/110) (73.3 to 88.5) | 82.6 (90/109) (74.1 to 89.2) | 98.5 (1084/1101) (97.5 to 99.1) | 98.5 (1085/1102) (97.5 to 99.1) | 84.1 (90/107) (75.8 to 90.5) | 84.1 (90/107) (75.8 to 90.5) | 98.2 (1084/1104) (97.2 to 98.9) | 98.3 (1085/1104) (97.3 to 99.0) | |||
*All resolved values calculated from data on testing of discrepant samples.