The iNPH patients were older than the AD (p = 0.044, Cohen’s d = −0.001) and had a lower frequency of APOE ε4+ (χ2 = 5.74, p = 0.017), but these differences where not statistically significant when adjusted for multiple comparisons (accepted at p < 0.003). The gene discussed is APOE; the disease is Alzheimer disease.