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(b) Chi-square tests
| Value | P value | |
|---|---|---|
| Pearson correlation (r) | 0.402 | 0.017∗ |
| Yates χ 2 | 3.741 | 0.053 |
| Positive likelihood ratio | 1.904 | |
| Negative likelihood ratio | 0.277 | |
| Sensitivity | 0.846 | |
| Specificity | 0.556 | |
| Positive predictive value | 0.846 | |
| Negative predictive value | 0.556 |
∗Statistically significant association.
