Regression equations for predicting sensitivity, specificity, and median referral age of the absolute HSDS (sds), parental height corrected (phc), and deflection (def) screening rules, the residual standard error, and the proportion of explained variance (r2)
| Rule | Outcome | Predictive equation | Resid. SE | r2 |
|---|---|---|---|---|
| sds | Sensitivity | 97.5−3.62a−0.60b−6.04ab | 4.97 | 0.89 |
| Specificity | 58.4−3.55a−2.32b+1.20p+2.00ab | 4.56 | 0.79 | |
| Median referral age | 1.45+0.33a+1.13b−0.04p+0.59ab−0.32ap+0.20bp | 0.38 | 0.94 | |
| phc | Sensitivity | 145+21.6c+26.8d+5.95cd | 3.66 | 0.91 |
| Specificity | 67.0−11.0c−11.3d+4.82q−3.41cd+1.06cq−1.15dq | 0.68 | 0.95 | |
| Median referral age | −1.09−1.76c−1.92d+1.26q−0.62cd+0.26cq+0.32dq+0.11cdq | 0.10 | 0.98 | |
| def | Sensitivity | 89.9−8.59e+0.40f+145g | 7.46 | 0.86 |
| Specificity | 82.9+3.48e−1.05f−21.1g | 5.47 | 0.57 | |
| Median referral age | 5.63+0.82e−0.02f+2.28g | 0.28 | 0.87 |