Table 3.
Summary of sensitivity, specificity, and positive and negative predictive power of the 45-question BRISC scores at z-score thresholds of −2, −1.5, −1, and −0.5 and ROC determined optimal score
| BRISC scores | z-Score thresholds | ||||
|---|---|---|---|---|---|
| Negativity bias | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −1.14SD ROC threshold | |
| Sensitivity (%) | 91.4 | 86.4 | 78.9 | 67.4 | 84.9 |
| Specificity (%) | 71.9 | 84.9 | 91.9 | 97.4 | 87.6 |
| Positive predictive power (%) | 53.3 | 66.8 | 77.5 | 90.0 | 70.7 |
| Negative predictive power (%) | 96.0 | 94.7 | 92.5 | 89.5 | 94.3 |
| Emotional resilience | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −0.43SD ROC threshold | |
| Sensitivity (%) | 64.8 | 52.4 | 41.3 | 28.1 | 69.3 |
| Specificity (%) | 72.4 | 85.5 | 92.7 | 96.9 | 70.0 |
| Positive predictive power (%) | 54.5 | 64.9 | 74.2 | 82.4 | 54.1 |
| Negative predictive power (%) | 80.1 | 77.9 | 75.6 | 72.5 | 81.7 |
| Social skills | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −0.50SD ROC threshold | |
| Sensitivity (%) | 54.6 | 36.8 | 22.5 | 15.7 | 54.6 |
| Specificity (%) | 68.1 | 83.2 | 94.1 | 97.9 | 68.1 |
| Positive predictive power (%) | 37.7 | 43.6 | 57.3 | 72.1 | 37.7 |
| Negative predictive power (%) | 80.9 | 78.8 | 77.4 | 76.7 | 80.9 |
| Combined score | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −1.57SD ROC threshold | |
| Sensitivity (%) | 69.6 | 81.6 | 87.2 | 92.0 | 81.2 |
| Specificity (%) | 96.3 | 91.9 | 83.6 | 70.7 | 92.7 |
| Positive predictive power (%) | 87.4 | 78.7 | 66.0 | 53.4 | 80.2 |
| Negative predictive power (%) | 89.6 | 93.1 | 94.6 | 96.0 | 93.1 |
z-Score thresholds are expressed in standard deviations (SD). Results are reported for scores on negativity bias, emotional resilience, social skills, and combined total.