Table 1. Demographics.
| Probable iNPH (n=17) | Possible iNPH (n=6) | Unlikely iNPH (n=3) | |
|---|---|---|---|
| Age median (range) | 74 (65–81) | 74.5 (66–81) | 71 (71–79) |
| Antihypertensive drugs, n (%) | 11 (65) | 3 (50) | 1 (33) |
| Diabetes mellitus, n (%) | 4 (24) | 2 (33) | 0 (0) |
| Symptom duration, months, median (range) | 24 (6–72) | 27 (12–48) | 36 (12–80) |
| CSF pressure cmH2O, median (range) | 16.0 (13.0–23.0) | 15.0 (9.0–19.0) | 17.5 (12.5–19.0) |
| Evans index mean (range) | 0.36 (0.30–0.43) | 0.36 (0.30–0.41) | 0.39 (0.36–0.41) |
| DWMHs, median (range) | 2 (0–3) | 2 (1–3) | 2 (2–3) |
| DESH, n (%) | 14 (82) | 2 (33) | 1 (33) |
| Callosal angle, degrees, mean (range) | 69 (53–99) | 64 (40–91) | 52 (37–67) |
| MMSE, median (range) | 25 (19–29) | 26.5 (19–29) | 23 (15–25) |
| mRS, median (range) | 2 (1–4) | 2 (1–3) | 2 (2–3) |
| Gait impairment, n (%) | 17 (100) | 6 (100) | 3 (100) |
| Cognitive impairment, n (%) | 15 (88) | 3 (50) | 3 (100) |
| Incontinence, n (%) | 13 (77) | 4 (67) | 2 (67) |
cmH2O, centimeter of water; CSF, cerebrospinal fluid; DESH, disproportionately enlarged subarachnoid-space hydrocephalus; DWMHs, deep white matter hyperintensities; iNPH, idiopathic normal pressure hydrocephalus; MMSE, mini-mental state examination; mRS, modified Rankin scale.