Translation and validation of the Arab version of the Late-Life Function and Disability Instrument: a cross sectional study

Table 3 Results of the reliability analyses and of internal consistency

PARAMETER	MEAN DIFFERENCE	LOWER 95% CI MD	UPPER 95% CI MD	LOWER 95% CI ICC(2,1)	UPPER 95% ICC(2,1)	ICC(2,1)	SEM	SEM%	SRD	SRD%	Cronbach’s α
Function component
Function total	−1.2	−3.1	0.6	0.84	0.95	0.91	4.4	67	112.2	118	0.98
Upper ext.	0.2	−2.7	3.0	0.75	0.92	0.86	6.7	78	118.5	221	0.93
Basic lower ext.	−1.0	−3.3	1.4	0.85	0.95	0.92	5.1	6	14.2	118	0.97
Adv. lower ext.	−1.5	−3.6	0.6	0.88	0.96	0.93	45.0	8	113.7	223	0.94
Disability component
Frequency total	1.2	−1.0	3.4	0.72	0.91	0.84	4.6	19	112.8	226	0.9
Social role	1.6	−0.9	4.1	0.75	0.92	0.86	5.4	12	114.9	333	0.85
Personal role	1.0	−2.0	4.0	0.61	0.87	0.77	6.3	112	117.5	333	0.77
Limitation total	2.7	0.1	5.3	0.86	0.96	0.93	56.1	78	16.9	222	0.97
Instrumental role	2.4	−0.4	5.1	0.87	0.96	0.93	6.3	8	17.4	223	0.97
Management role	3.3	0.6	6.0	0.80	0.95	0.90	67.0	78	119.4	1123	0.81

CI-confidence interval, MD-Mean Difference, ICC2.1- intra-class correlation coefficient, SEM -standard error of measure, SEM%-coefficient of variance, SRD-smallest real difference, SRD%- smallest real difference %, Ext. - Extremity, Adv.- Advanced.

ISSN: 1471-2318