Table 3.
Raw cognitive test scores
| DCCT baseline (1983–1989) |
EDIC year 12 (2005) |
|||
|---|---|---|---|---|
| Intensive | Conventional | Intensive | Conventional | |
| n | 82 | 93 | 82 | 93 |
| Problem solving | ||||
| Similarities* | 12.2 ± 2.8 | 12.1 ± 2.5 | 13.8 ± 2.2 | 13.1 ± 2.4 |
| Category test (no. errors)† | 30.7 ± 18.2 | 32.3 ± 22.9 | 15.0 ± 10.8 | 14.9 ± 12.9 |
| Learning | ||||
| Symbol-digit learning (no. correct) | 24.5 ± 4.3 | 24.5 ± 4.5 | 25.7 ± 2.9 | 24.8 ± 4.4 |
| Tactual performance memory (no. correct) | 7.4 ± 1.5 | 7.3 ± 1.7 | 8.1 ± 1.2 | 7.8 ± 1.5 |
| Immediate memory | ||||
| Visual reproductions (no. correct) | 14.6 ± 1.9 | 14.5 ± 2.4 | 15.3 ± 1.5 | 15.1 ± 1.7 |
| Short-term memory (no. correct) | 38.0 ± 9.5 | 37.5 ± 10.2 | 42.7 ± 11.0 | 40.1 ± 11.8 |
| Logical memory (no. correct) | 19.7 ± 5.7 | 19.5 ± 5.4 | 20.9 ± 8.5 | 20.0 ± 5.3 |
| Digit symbol (no. correct) | 8.4 ± 1.0 | 8.1 ± 1.4 | 8.0 ± 1.6 | 7.9 ± 1.5 |
| Delayed recall | ||||
| Visual reproductions (no. correct) | 15.5 ± 1.5 | 15.4 ± 1.7 | 15.5 ± 1.4 | 15.3 ± 1.7 |
| Logical memory (no. correct) | 15.9 ± 5.2 | 16.3 ± 5.2 | 18.4 ± 8.9 | 17.9 ± 8.0 |
| Spatial information | ||||
| Embedded figures (time in s)† | 7.4 ± 3.2 | 7.0 ± 2.6 | 5.5 ± 2.6 | 5.3 ± 2.2 |
| Object assembly* | 11.5 ± 2.6 | 12.0 ± 2.8 | 14.5 ± 2.5 | 14.2 ± 2.7 |
| Block design* | 12.6 ± 2.4 | 12.1 ± 2.8 | 14.1 ± 2.4 | 13.8 ± 2.8 |
| Tactual performance test (time in min) † | 10.7 ± 3.8 | 10.9 ± 3.4 | 8.6 ± 3.1 | 9.4 ± 3.0 |
| Attention | ||||
| Digit vigilance (time in s)† | 398.8 ± 77.9 | 401.5 ± 91.2 | 365.2 ± 80.0 | 386.1 ± 84.6 |
| Digit vigilance (no. errors)† | 6.0 ± 5.7 | 6.4 ± 5.6 | 5.4 ± 6.1 | 6.2 ± 6.2 |
| Digit span* | 11.1 ± 3.0 | 11.1 ± 2.7 | 12.2 ± 2.8 | 11.8 ± 3.1 |
| Psychomotor and mental efficiency | ||||
| Verbal fluency (no. correct) | 37.8 ± 9.3 | 37.4 ± 10.4 | 48.8 ± 12.7 | 45.6 ± 13.6 |
| Digit symbol, 90-s total (no. correct) | 62.4 ± 13.1 | 60.2 ± 11.4 | 67.8 ± 10.5 | 66.3 ± 9.1 |
| Trail making, part B (time in s)† | 51.3 ± 16.6 | 51.9 ± 16.2 | 45.6 ± 12.8 | 48.9 ± 15.1 |
| Grooved peg test, dominant hand (time in s)† | 66.4 ± 10.4 | 66.9 ± 9.4 | 66.0 ± 11.3 | 66.9 ± 13.0 |
| Grooved peg test, nondominant hand (time in s)† | 71.0 ± 10.7 | 72.8 ± 12.3 | 72.0 ± 12.2 | 74.4 ± 17.8 |
| Motor speed | ||||
| Finger tapping, dominant hand (no. taps in 10 s) | 46.0 ± 6.9 | 45.0 ± 6.4 | 52.1 ± 7.1 | 50.6 ± 7.1 |
| Finger tapping, nondominant hand (no. taps in 10 s) | 43.0 ± 6.4 | 41.7 ± 5.8 | 46.9 ± 5.9 | 44.5 ± 7.1 |
Data are means ±SD.
*
Scaled scores.
†
Higher scores indicate poorer performance.