Table 1 Demographic data of 119 iNPH patients
All patients | Unimproved | Improved | P | |
|---|---|---|---|---|
n = 119 | n = 38 (32%) | n = 81 (68%) | ||
Duration of symptoms (months) | 36 (21–48) | 36 (23–49) | 30 (10–41) | 0.995 * |
Time from diagnosis to surgery (days) | 106 ± 52 | 108 ± 9 | 105 ± 6 | 0.817§ |
Age (years) | 74 ± 7 | 76 ± 7 | 74 ± 7 | 0.930§ |
Sex (men) | n = 76 (64%) | n = 27 (71%) | n = 49 (60%) | 0.310 ‡ |
Body mass index | 27 ± 4 | 27 ± 5 | 27 ± 3 | 0.224§ |
Vascular risk factors: heart disease, hypertension, or Diabetes mellitus (yes) | n = 84 (71%) | n = 28 (74%) | n = 56 (69%) | 0.671 ‡ |
Heart disease (yes) | n = 35 (29%) | n = 13 (34%) | n = 22 (27%) | 0.282‡ |
Hypertension (yes) | n = 70 (59%) | n = 23 (61%) | n = 47 (58%) | 0.478‡ |
Diabetes mellitus (yes) | n = 36 (30%) | n = 11 (29%) | n = 25 (31%) | 0.505‡ |
MMSE | 26 (24–28) | 26 (21–31) | 26 (22–30) | 0.630 § |
Preoperative iNPH scale score | 54 ± 17 | 54 ± 17 | 53 ± 17 | 0.759§ |
Postoperative iNPH scale score | 66 ± 18 | 56 ± 17 | 70 ± 17 | < 0.001§ |
Delta iNPH scale score | 12 ± 11 | 2 ± 2 | 17 ± 9 | < 0.001§ |