Table 2 IPTW survival analysis estimating the HR and sHR of dementia, AD, and vascular dementia among patients with iNPH
Outcomes | Number of patients | Event | Person years | Incidence rate† | HR (95% CI) | sHR (95% CI) |
|---|---|---|---|---|---|---|
Dementia | ||||||
Non-shunt surgery | 1677.4 | 294.3 | 7152.4 | 41.2 | 1 | 1 |
Shunt surgery | 375.0 | 49.1 | 1432.1 | 34.3 | 0.83 (0.61, 1.12) | 0.74 (0.55, 0.99)* |
Alzheimer's disease | ||||||
Non-shunt surgery | 1677.4 | 60.0 | 7807.6 | 7.7 | 1 | 1 |
Shunt surgery | 375.0 | 2.0 | 1556.8 | 1.3 | 0.17 (0.04, 0.69)* | 0.15 (0.04, 0.61)* |
Vascular dementia | ||||||
Non-shunt surgery | 1677.4 | 20.9 | 7921.3 | 2.6 | 1 | 1 |
Shunt surgery | 375.0 | 4.9 | 1550.5 | 3.2 | 1.18 (0.44, 3.16) | 1.07 (0.40, 2.86) |