Statistical analysis of outcome in functional tests as compared with baseline1 in shunt operated and non-operated groups
| Operated (n=47) | Not operated (n=21) | ||
|---|---|---|---|
| Values are mean (SD). | |||
| ***p < 0.001 v baseline; no other differences significant. | |||
| 1Baseline values refer to the best of two results. | |||
| 2Four patients unable to perform all the tests were excluded from the analyses (see table 5). | |||
| 3A minus sign for difference indicates a change for the worse. | |||
| Walking test (number of steps) | Baseline | 47 (28)2 | 35 (23) |
| Follow up | 40 (31)*** | 39 (24) | |
| Mean difference | 7 (31) | −4 (9)3 | |
| Walking test (time) (s) | Baseline | 29 (23)2 | 22 (16) |
| Follow up | 24 (25)*** | 25 (19) | |
| Mean difference | 5 (26) | −3 (9) | |
| Memory (number of correct answers) | Baseline | 3.6 (1.8) | 3.5 (2.4) |
| Follow up | 4.4 (2.0)*** | 3.4 (2.7) | |
| Mean difference | 0.7 (1.2) | −0.1 (1.3) | |
| Reaction time (ms) | Baseline | 427 (333)2 | 921 (1611) |
| Follow up | 320 (182)*** | 512 (467) | |
| Mean difference | 107 (218) | 410 (1303) | |
| Identical forms test (number of correct answers) | Baseline | 19 (12) | 17 (15) |
| Follow up | 21 (13) | 17 (19) | |
| Mean difference | 2 (8) | 0 (7) | |