Table 4.
Summary of sensitivity, specificity, and positive and negative predictive power of the 15-question mini-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 | −1.34SD ROC threshold | |
| Sensitivity (%) | 89.6 | 84.9 | 77.1 | 69.2 | 79.9 |
| Specificity (%) | 71.6 | 83.6 | 90.7 | 94.7 | 89.2 |
| Positive predictive power (%) | 52.6 | 64.6 | 74.4 | 82.1 | 72.2 |
| Negative predictive power (%) | 95.1 | 94.0 | 91.8 | 89.7 | 92.7 |
| Emotional resilience | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −0.95SD ROC threshold | |
| Sensitivity (%) | 9.3 | 21.4 | 36.8 | 53.9 | 47.4 |
| Specificity (%) | 98.7 | 96.2 | 88.6 | 72.2 | 83.3 |
| Positive predictive power (%) | 72.2 | 66.7 | 53.4 | 40.7 | 51.1 |
| Negative predictive power (%) | 75.5 | 77.6 | 79.9 | 81.6 | 81.2 |
| Social skills | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −0.61SD ROC threshold | |
| Sensitivity (%) | 44.6 | 27.5 | 17.5 | 12.1 | 43.6 |
| Specificity (%) | 68.8 | 85.5 | 94.3 | 97.1 | 71.1 |
| Positive predictive power (%) | 33.6 | 40.1 | 52.1 | 59.6 | 34.8 |
| Negative predictive power (%) | 77.9 | 76.9 | 76.4 | 75.8 | 78.7 |
| Combined score | |||||
| −2SD threshold | −1.5SD threshold | −1SD threshold | −0.5SD threshold | −1.31SD ROC threshold | |
| Sensitivity (%) | 69.2 | 77.2 | 83.6 | 89.2 | 80.0 |
| Specificity (%) | 94.7 | 91.0 | 84.1 | 73.2 | 89.3 |
| Positive predictive power (%) | 82.7 | 75.9 | 65.9 | 54.9 | 73.3 |
| Negative predictive power (%) | 89.3 | 91.6 | 93.3 | 94.8 | 92.4 |
z-Score thresholds are expressed in standard deviations (SD). Results are reported for scores on negativity bias, emotional resilience, social skills, and combined total.