Table 4.
Area Under the Curve (AUC) of the Receiver Operating Characteristic Curve (ROC) Analyses for the different versions of the GAS, and Comparison of independent ROC curves
| Criteria | AUC | SE | (95%CI) | Sensitivity/ | Cut-off | PPV/NPV |
|---|---|---|---|---|---|---|
| Specificity | ||||||
| Clinical vs NonClinical | ||||||
| GAS-long form | .729 | .045 | .672/.782 | 91.43/28.82 | > 9a | 16.4/95.7 |
| 88.57/51.53 | > 13 | 21.8/96.7 | ||||
| GAS-10 | .702 | .046 | .643/.757 | 62.86/72.93 | > 6 | 26.2/92.8 |
| ROC curve comparison | ∆AUC | SE | (95%CI) | z | p | |
| GAS-long form vs GAS-10 | .026 | .035 | −.041/.095 | .780 | .435 | |
| GAI-SF > 2 | ||||||
| GAS-long form | .797 | .028 | .743/.844 | 91.82/38.96 | > 9a | 51.8/87.0 |
| 71.82/75.97 | > 15 | 68.1/79.1 | ||||
| GAS-10 | .745 | .030 | .688/.797 | 53.64/83.77 | > 6 | 70.2/71.7 |
| ROC curve comparison | ∆AUC | SE | (95%CI) | z | p | |
| GAS-long form vs GAS-10 | .052 | .0233 | .006/.097 | 2.226 | .026 | |
a cut-off identified by Gould et al., 2014 [70]