Presenting symptoms and postoperative improvement; denominators for improvement calculations are patients who had each symptom at baseline and attended follow-up
| Triad of NPH Symptoms and Functional Disability | Present at Baseline (Pre-Op) | Improved at 3 Months Post-Op | Improved at 12 Months Post-Op |
|---|---|---|---|
| Training & testing cohort | 249/249 (100%) | 226/249 (90.8%) | 175/249 (70.3%) |
| Gait impairment | 249 (100%) | 165/226 (73.0%) | 123/175 (70.3%) |
| Urinary incontinence | 196 (78.7%) | 76/127 (59.8%) | 66/97 (68.0%) |
| Cognitive impairment | 217 (87.1%) | 97/208 (46.6%) | 75/160 (46.9%) |
| mRS | –– | 105/179 (58.7%) | 84/149 (56.4%) |
| Validation cohort | 33/33 (100%) | 33/33 (100%) | 33/33 (100%) |
| Gait impairment | 33 (100%) | 29/33 (87.9%) | 22/33 (66.7%) |
| Urinary incontinence | 21 (63.6%) | 4/33 (12.1%) | 3/33 (9.1%) |
| Cognitive impairment | 31 (93.9%) | 14/33 (42.4%) | 12/33 (36.4%) |
| mRS | –– | 7/33 (21.2%) | 6/33 (18.2%) |