. Author manuscript; available in PMC: 2020 Sep 1.

Published in final edited form as: Am J Geriatr Psychiatry. 2019 Mar 27;27(9):908–917. doi: 10.1016/j.jagp.2019.03.016

Table 3.

Cox regression analysis on time-to-onset of psychosis in Alzheimer’s disease

Drug	HR (95% CI)	p value^*
multivitamin	0.6 (0.47,0.78)	0.0001
memantine	0.66 (0.51,0.86)	0.002
Vitamin D(ergocalciferol)	0.68 (0.48,0.96)	0.03
omeprazole	0.77 (0.49,1.19)	0.24
warfarin	0.53 (0.3,0.91)	0.02
ferrous sulfate	0.24 (0.08,0.77)	0.02

Multivariable Cox regression controlled for baseline MMSE, baseline age, sex, race, and education. p values were obtained by Wald chi-square test and df is 1 for each of the variables.