The number of observations (%), range of test scores and median scores (interquartile range) on the five different cognitive tests | ||||
---|---|---|---|---|
N (%) | Range of possible test score | Median (interquartile range) | Test domain | |
The Digit Symbol Substitution testa | 1170 (71.9) | 0 to 96 possible symbols decoded | 45 (38 to 53) | Executive function |
The finger tapping testb | 1137 (69.9) | 0 to 70 taps per 10 s | 55 (48.6 to 60.3) | Motor speed |
MMSEc | 966 (59.4) | 0 to 30 points, where 30 is best | 29 (28 to 29) | Cognitive function |
The 12 word test pt 1d | 1178 (72.4) | 0 to 12 points, where 12 is best | 7 (6 to 8) | Verbal episodic memory |
The 12 word test pt 2e | 1174 (72.2) | 0 to 24 points, where 24 is best | 20 (18 to 22) | Verbal episodic memory |