Table 2.
Test performance of RCS for CI (MoCA 17‐22)
| All | 6 years of education and below | More than 6 years of education | ‘Old’ (Age 65 to 79 years) | ‘Old‐old’ (Age 80 years and above) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No CI | CI | p/Youden's Index | No CI | CI | p/Youden's Index | No CI | CI | p/Youden's Index | No CI | CI | p/Youden's Index | No CI | CI | p/Youden's Index | |
| Participants (row %) | 154 (84.2) | 29 (15.8) | 57 (77.0) | 17 (23.0) | 96 (88.9) | 12 (11.1) | 140 (84.3) | 26 (15.7) | 14 (82.4) | 3 (17.6) | |||||
| Mean RCS Score ± SD | 8.3±1.5 | 6.2±1.8 | <0.01 | 8.0±1.7 | 5.5±1.7 | <0.01 | 8.5±1.4 | 7.2±1.3 | <0.01 | 8.4±1.5 | 6.2±1.8 | <0.01 | 8.1±1.8 | 6.0±1.0 | 0.07 |
| AUC (95% CI) | 0.82 (0.75‐0.90) | <0.01 a | 0.85 (0.75‐0.94) | <0.01 a | 0.77 (0.63‐0.91) | <0.01 a | 0.82 (0.74‐0.91) | <0.01 a | 0.85 (0.66‐1.03) | <0.01 a | |||||
| Optimal Cut‐off | 7/8 | 0.49 | 6/7 | 0.51 | 8/9 | 0.48 | 8/9 | 0.48 | 7/8 | 0.71 | |||||
| Sensitivity/PPV | 0.77/0.37 | 0.81/0.52 | 0.56/0.21 | 0.51/0.27 | 0.71/0.43 | ||||||||||
| Specificity/NPV | 0.72/0.94 | 0.71/0.90 | 0.92/0.98 | 0.96/0.99 | 1.00/1.00 | ||||||||||
Bold indicates significance.
a
Null hypothesis: true area = 0.5.
Abbreviation: RCS, Rapid Cognitive Screen; CI, cognitive impairment; p, p value; SD, standard deviation; AUC, area under curve; 95% CI, 95% confidence interval.