Table 4 Comparison of functional improvement of patients over the follow-up period
From: Long-term outcomes of ventriculoperitoneal shunt therapy in idiopathic normal pressure hydrocephalus
|  | pre-surgery | post-surgery 12 months | post-surgery 24 months | post-surgery 36 months | χ2 | p |
|---|---|---|---|---|---|---|
mRS | 3(3–3) | 2(2–2) | 2(2–3) | 3(2–3) | 51.747 | 0.000 |
iNPHG | 7(5.5-8) | 4(3.5-5) | 6(4-6.5) | 6(4–7) | 47.160 | 0.000 |
MMSE | 23(21-25.5) | 24(21.5–25) | 23(21-24.5) | 23(18.5–24) | 11.430 | 0.010 |