Table 5. Raw test scores for NIH Toolbox Cognition Battery Instruments and Gold Standard Measures Across Entire Adult Sample (20-85 years of age) and unadjusted Scaled scores for selected composite measures.
| N | Mean (SD) | Median (Range) | Percent at floor (NIHTB-CB) | Percent at ceiling (NIHTB-CB) | |
|---|---|---|---|---|---|
| SAMPLE VARIABLES | |||||
| Age (Years) | 268 | 52.3 (21.0) | 53 (20 – 85) | ||
| Numeric Years of Education | 266 | 13.4 (2.9) | 12 (4 – 20) | ||
| NIH TOOLBOX MEASURES | |||||
| Reading Theta | 265 | 2.7 (1.6) | 2.8 (-3.2 – 7.0) | 0% | 0% |
| Vocabulary Theta | 263 | 2.1 (0.9) | 2.1 (-1.4 – 4.4) | 0% | 0% |
| Picture Sequence Memory Test Number Correct for 3 trials | 265 | 20.2 (11.0) | 19 (0 – 48) | 0.8% | 2.6% |
| List Sorting, Total Correct, 1 and 2 category lists | 264 | 18.3 (3.0) | 18 (8 – 28) | 0% | 0.4% |
| Flanker Score, 0-10 | 237 | 8.2 (1.0) | 8.4 (0.5 – 9.7) | 0% | 0% |
| DCCS Score, 0-10 | 244 | 7.8 (1.6) | 8.1 (0.6 – 9.6) | 0% | 0% |
| Pattern Comparison, Total Correct in 90 seconds | 264 | 41.7 (9.4) | 41 (15 – 73) | 0% | 0% |
| Mean Reaction Time Flanker, DCCS Composite, Scaled Score | 257 | 10.0 (3.0) | 10.0 (1.6 – 18.4) | 0% | 0% |
| Toolox Processing Speed Composite Scaled Score1 | 267 | 10.0 (3.0) | 10.0 (1.5 – 18.5) | 0% | 0% |
| GOLD STANDARD MEASURES | |||||
| WRAT-4 Reading RAW | 264 | 57.0 (7.2) | 59 (26 – 70) | ||
| PPVT-4 Raw | 263 | 204.0 (19.8) | 208 (22 – 227) | ||
| RAVLT Sum of Scores for 3 Trials | 261 | 23.3 (6.1) | 24 (8 – 39) | ||
| BVMT-R Sum of Scores for 3 Trials | 262 | 18.9 (7.6) | 19 (0 – 36) | ||
| Average of BVMT-R and RAVLT Scaled Score | 264 | 10.0 (3.0) | 10.0 (1.5 – 18.5) | ||
| PASAT Total Score | 256 | 30.8 (12.0) | 31 (3 – 49) | ||
| Wechsler (WISC-IV/ WAIS-IV) Letter-Number RAW | 262 | 18.8 (3.6) | 19 (5 – 27) | ||
| Wechsler (WISC-IV/WAIS-IV) Coding RAW | 263 | 60.5 (17.2) | 60 (12 – 104) | ||
| Wechsler (WISC IV / WAIS IV) Symbol Search RAW | 264 | 28.8 (9.2) | 29 (3 – 54) | ||
| Average of Coding and Symbol Search Scaled Score | 264 | 10.0 (3.0) | 10.0 (1.5 – 18.5) | ||
| D-KEFS Inhibition Total Score | 257 | 59.5 (17.6) | 55 (29 – 140) | ||
| Wisconsin Card Sort Total Errors | 260 | 20.1 (11.0) | 16 (6 – 51) |
1
average of Flanker & DCCS reaction time and Pattern Comparison scaled scores
BVMT-R: Brief Visuospatial Memory Test-Revised; DCCS: Dimensional Change Card Sort; DKEFS: Delis-Kaplan Executive Function System; PASAT: Paced Auditory Serial Addition Test; PPVT-4: Peabody Picture Vocabulary Test, fourth edition; RAVLT: Rey Auditory Verbal Learning Test; StDev: standard deviation of raw scores; WISC: Wechsler Intelligence Scale for Children; WAIS: Wechsler Adult Intelligence Scale; WRAT-4: Wide Range Achievement Test, fourth edition