Table 2.

Internal consistency of the FES-I, test-retest reliability, and factor analysis

FES-I item	Internal consistency (n = 282]			Test-retest reliability (n = 50]					Two-factor solution
	mean score ± SD	item-total correlation	Cronbach's a if the item is deleted	mean		ICC	95%		factor load
				1st	2nd		CI lower	upper	factor 1	factor 2
Cleaning the house	1.78±0.99	0.82	0.98	1.96	2.02	0.77	0.630	0.864	0.835	0.357
Getting dressed or undressed	1.58±0.85	0.82	0.98	1.66	1.86	0.81	0.672	0.887	0.825	0.365
Preparing simple meals	1.65±0.93	0.81	0.98	1.74	1.94	0.71	0.546	0.827	0.855	0.326
Taking a bath or shower	1.85±0.97	0.82	0.98	2.00	2.20	0.73	0.575	0.840	0.806	0.381
Going to the shop	1.84±1.07	0.89	0.98	1.96	2.22	0.83	0.698	0.902	0.786	0.490
Getting in or out of a chair	1.68±0.95	0.84	0.98	1.70	1.86	0.79	0.655	0.874	0.767	0.442
Going up or down stairs	2.19±1.09	0.89	0.98	2.32	2.28	0.80	0.658	0.876	0.668	0.606
Walking around outside	1.95±1.14	0.93	0.98	2.08	2.08	0.82	0.709	0.896	0.673	0.657
Reaching up or bending down	1.98±1.09	0.92	0.98	2.04	2.24	0.83	0.714	0.901	0.674	0.644
Answering the telephone	2.04±1.13	0.91	0.98	2.16	2.22	0.84	0.731	0.905	0.619	0.680
Walking on a slippery surface	2.54±1.01	0.84	0.98	2.58	2.58	0.73	0.571	0.839	0.420	0.794
Visiting a friend or relative	1.88±1.12	0.90	0.98	1.96	2.18	0.78	0.641	0.871	0.559	0.732
Walking in a place with crowds	2.07±1,18	0.89	0.98	2.16	2.28	0.90	0.833	0.943	0.483	0.800
Walking on an uneven surface	2.45±1.08	0.84	0.98	2,46	2.52	0.75	0.595	0.849	0.343	0.876
Walking up or down a slope	2.51±1.09	0.81	0.98	2.56	2.56	0.71	0.544	0.827	0.276	0.898
Going out to a social event	1.94±1.15	0.84	0.98	2.08	2.30	0.85	0.746	0.916	0.485	0.734
Total score	32.01±4.81		0.98*	33.42	35.34	0.90	0.826	0.941	N/A