Table 3.

Comparison of cognitive performance between the pravastatin group and the placebo group

	Pravastatin						Placebo
	Baseline (N=30)		Six weeks (N=28)		Twelve weeks (N=24)		Baseline (N=30)		Six weeks (N=26)		Twelve weeks (N=25)
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	t	p*	t	p*
Attention/vigilance	32.12	12.66	35.25	12.47	34.04	11.69	37.33	12.77	37.72	13.92	38.04	15.19	0.79	0.43	−0.26	0.8
Working memory	32.04	16.41	33.62	16.4	35.79	14.6	34.4	12.59	36.56	11.86	35.8	11.51	−0.46	0.65	1.11	0.27
Verbal Learning	37.04	11.46	39.91	12.24	41.41	13.71	38.76	12.47	38.2	9.81	43.24	11.57	1.69	0.1	−0.14	0.89
Visual Learning	35.5	15.26	37.16	15.42	38.33	19.13	33.48	11.71	35.16	13.96	37.68	10.86	0.21	0.83	−0.3	0.76
Problem solving	39.87	9.25	42.41	9.35	42.45	11.03	42.6	9.02	44.84	9.69	46.16	11.17	−0.17	0.87	−0.57	0.57
Social cognition	36.95	9.41	37.08	13.86	36	11.64	34.96	15.08	35.6	15.13	35.76	13.68	−0.17	0.86	−0.6	0.55
MATRICS composite Score	25.33	16.98	28.87	18.79	29.37	18.09	28.75	12.31	29.8	13.44	32.04	13.11	0.72	0.47	−0.11	0.91

^*P-values obtained from ANCOVA models using change scores as the dependent variable, and baseline score and treatment group as covariates