Demography and clinical findings at Pre-op 1 for iNPH patients who subsequently waited for surgery for more than 6 months (iNPHDelayed) and for patients waiting less than 3 months (iNPHEarly)
| iNPHDelayed (n=33) | iNPHEarly (n=69) | |
|---|---|---|
| Demography | ||
| Age, years, median (range) | 76 (55–89) | 70 (48–84)* |
| Sex (F/M), n (%) | 16/17 (48/52) | 32/37 (46/54) |
| MMSE, median (range) | 25 (14–30) | 25 (9–30) |
| Modified Rankin Scale, median (range) | 2 (1–4) | 2 (1–4) |
| iNPH scale scores, median (range) | ||
| Total score | 45 (7–94) | 49 (2–95) |
| Gait score | 23 (0–95) | 39 (0–100) |
| Neuropsychology score | 40 (5–100) | 49 (3–100) |
| Balance score | 67 (0–100) | 67 (0–100) |
| Continence score | 60 (20–100) | 60 (0–100) |
| Duration of symptoms, months, median (range) | 24 (8–132) | 24 (6–360) |
| Cerebrovascular risk factors, n (%) | ||
| Hypertension | 20 (61) | 24 (35)† |
| Cardiovascular disease | 10 (30) | 12 (17) |
| Diabetes | 4 (12) | 10 (14) |
| Time before surgery, months, median (range) | 13.2 (6.8–23.8) | 0.2 (0.1–2.7) |
*p=0.006.
†p=0.019.
iNPH, idiopathic normal pressure hydrocephalus; MMSE, Mini-Mental State Examination.