Table 2.

Internal consistency of the Arabic version of the FACT-Cog (N = 134)

	Mean (SD)	Scale mean if item deleted	Scale variance if item deleted	Corrected item-total correlation	Cronbach's Alpha if Item deleted	Cronbach's Alpha
FACT-Cog Total scale	83(21.5)					0.92
Perceived Cognitive Impairments	47.5(12.5)					0.92
CogA1		18.38	172.10	0.76	0.917
CogA3		18.33	171.74	0.75	0.917
CogC7		17.56	166.72	0.74	0.917
CogM9		18.90	185.05	0.43	0.924
CogM10		17.17	172.35	0.64	0.919
CogM12		17.42	167.52	0.70	0.918
CogV13		18.64	179.20	0.58	0.921
CogV15		18.75	179.84	0.60	0.921
CogV16		18.72	181.07	0.55	0.922
CogV17b		18.74	180.64	0.56	0.922
CogF19		17.24	171.64	0.62	0.920
CogF23		17.93	168.71	0.70	0.918
CogF24		17.01	171.69	0.46	0.926
CogF25		18.17	171.66	0.59	0.921
CogC31		17.84	168.97	0.69	0.918
CogC32		18.37	172.05	0.79	0.916
CogC33a		18.39	176.48	0.46	0.924
CogC33c		18.42	176.45	0.56	0.921
CogMT1		20.09	216.44	0.64	0.928
CogMT2		20.11	216.07	0.65	0.928
Perceived Cognitive Abilities	13.2(3.54)					0.92
CogPC1		22.04	51.42	0.67	0.918
CogPV1		21.41	54.46	0.57	0.923
CogPM1		22.38	51.65	0.71	0.915
CogPM2		22.05	50.64	0.73	0.913
CogPF1		21.78	51.20	0.75	0.912
CogPCH1		21.74	50.93	0.76	0.912
CogPCH2		22.27	50.32	0.74	0.913
CogPMT1		21.61	49.87	0.78	0.910
CogPMT2		21.62	49.66	0.78	0.910
Comments from Others	14.5(4.80)					0.83
CogO1		1.58	6.87	0.55	0.861
CogO2		2.41	8.03	0.68	0.784
CogO3		2.29	7.48	0.78	0.738
CogO4		2.21	7.41	0.70	0.768
Impact On Quality Of Life	7.80(5.24)					0.95
CogQ35		6.16	16.30	0.79	0.971
CogQ37		6.02	15.76	0.92	0.930
CogQ38		6.20	15.56	0.92	0.931
CogQ41		6.18	15.31	0.93	0.929

N frequency, SD standard deviation