Table 2.
Sensitivity and Specificity of Other types of Digital and Paper-and-Pencil Drawing Tests
| Types of Drawing Tests | No. of study | Sensitivity (95% CI) |
Specificity 95% CI) |
LR + | LR– | DOR | AUC |
|---|---|---|---|---|---|---|---|
| a. MCI | |||||||
| Digital Tests | |||||||
| – Pentagon Drawing | 1 | 0.71 (0.44–0.99) | 0.86 (0.66–1.00) | – | – | – | – |
| – ROCF | 1 | 0.76 | 0.86 | – | – | – | 85% |
| – Spiral Drawing | 1 | 1.00 (0.72–1.00) | 1.00 (0.97–1.00) | – | – | – | – |
| – House Drawing | 1 | 0.85 (0.61–1.00) | 0.94 (0.79–1.00) | – | – | – | – |
| Paper-and-pencil Tests | |||||||
| – Cube Drawing | 1 | 0.66 | 0.53 | – | – | – | |
| – ROCF Drawing | 1 | 0.59 | 0.96 | – | – | – | 77% |
| b. Dementia | |||||||
| Digital Tests | |||||||
| – Pentagon Drawing | 2 | 0.79 (0.74–0.85) | 0.74 (0.68–0.78) | 8.08 (0.42–156) | 0.22(0.09–0.54) | 41.1 (1.07–157) | – |
| – Tree Drawing | 2 | 0.88 (0.81–0.93) | 0.78 (0.68–0.86) | 3.63 (2.07–6.38) | 0.17 (0.10–0.27) | 22.7 (10.8–47.9) | – |
| – ROCF | 1 | 0.82 | 0.91 | – | – | – | 93% |
| – House Drawing | 1 | 0.81 (0.69–0.94) | 1.00 (0.94–1.00) | – | – | – | – |
| – Spiral Drawing | 1 | 0.85 (0.73–0.97) | 1.00 (0.94–1.00) | – | – | – | – |
| Paper-and-pencil Tests | |||||||
| – Pentagon Drawing | 4 | 0.85 (0.70–0.94) | 0.73 (0.52–0.87) | 3.21 (1.82–5.66) | 0.20 (0.11–0.36) | 16.1 (9.92–26.3) | 87% (84%–90%) |
| – Cube Drawing | 1 | 0.74 | 0.63 | – | – | – | –- |
MCI Mild Cognitive Impairment, ROCF Rey-Osterrieth complex figure, LR + Positive likelihood ratio, LR- Negative likelihood ration, DOR Diagnostic odds ratio, AUC Area under the curve, CI Confidence interval