Table 2. Validity of Self-reported Cocaine Use as Compared to Urinalysis Results.
Mean | SD | Range | |
---|---|---|---|
Sensitivity (%) | 85.2 | 6.3 | 74.4 -100.0 |
Specificity (%) | 92.4 | 4.7 | 79.7 - 97.8 |
Agreement Rate (%) | 89.5 | 4.3 | 78.7 - 97.7 |
Kappa | 0.78 | 0.10 | 0.46 - 0.95 |