Table 4 Diagnostic accuracy of traditional tests for acromioclavicular joint pain
Clinical tests | Cell counts | Diagnostic accuracy | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | TP | FN | FP | TN | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | LR+ (95% CI) | LR- (95% CI) | OR (95% CI) |
Individual tests | |||||||||||
Cross-body adduction | 14 | 8 | 93 | 33 | 0.64 (0.43, 0.80) | 0.26 (0.19, 0.35) | 0.13 (0.08, 0.21) | 0.81 (0.66, 0.90) | 0.86 (0.58, 1.12) | 1.39 (0.71, 2.43) | 0.62 (0.24, 1.61) |
Active Compression/O’Brien’s test | 3 | 19 | 10 | 117 | 0.14 (0.05, 0.33) | 0.92 (0.86, 0.96) | 0.23 (0.08, 0.50) | 0.86 (0.79, 0.91) | 1.73 (0.53, 5.15) | 0.94 (0.72, 1.06) | 1.85 (0.47. 7.33) |
Hawkins-Kennedy test | 14 | 6 | 81 | 45 | 0.70 (0.48, 0.86) | 0.36 (0.28, 0.44) | 0.15 (0.09, 0.23) | 0.88 (0.77, 0.95) | 1.09 (0.74, 1.41) | 0.84 (0.39, 1.55) | 1.30 (0.47, 3.61) |
Localised ACJ tenderness | 8 | 14 | 34 | 94 | 0.36 (0.20, 0.57) | 0.73 (0.65, 0.80) | 0.19 (0.10, 0.33) | 0.87 (0.79, 0.92) | 1.37 (0.70, 2.39) | 0.87 (0.58, 1.13) | 1.58 (0.61, 4.10) |
Combinations of tests | |||||||||||
At least 1 of 4 | 21 | 1 | 120 | 9 | 0.96 (0.78, 0.99) | 0.07 (0.04, 0.13) | 0.15 (0.10, 0.22) | 0.90 (0.60, 0.98) | 1.03 (0.84, 1.11) | 0.65 (0.11, 3.54) | 1.58 (0.19, 13.09) |
At least 2 of 4 | 11 | 9 | 77 | 43 | 0.55 (0.34, 0.74) | 0.36 (0.28, 0.45) | 0.13 (0.07, 0.21) | 0.83 (0.70, 0.91) | 0.86 (0.53, 1.20) | 1.26 (0.69, 2.01) | 0.68 (0.26, 1.78) |
At least 3 of 4 | 6 | 14 | 22 | 93 | 0.30 (0.15, 0.52) | 0.81 (0.73, 0.87) | 0.21 (0.10, 0.40) | 0.87 (0.79, 0.92) | 1.57 (0.70, 3.13) | 0.87 (0.59, 1.09) | 1.81 (0.63, 5.25) |
4 of 4 | 1 | 19 | 1 | 113 | 0.05 (0.01, 0.24) | 0.99 (0.95, 1.00) | 0.50 (0.10, 0.91) | 0.86 (0.79, 0.91) | 5.70 (0.60, 52.63) | 0.96 (0.77, 1.01) | 5.95 (0.36, 99.19) |