. Author manuscript; available in PMC: 2015 Jun 2.

Published in final edited form as: Psychol Aging. 2008 Dec;23(4):917–927. doi: 10.1037/a0013466

Table 3. Baseline Characteristics of Dropouts and Non-Dropouts.

	Non-dropouts			Dropouts

Variable	N	M	SD	N	M	SD
Years of age^*	452	73.58	5.86	238	74.65	6.09
CES-D^a ^*	452	4.70	4.54	238	5.70	5.37
DSS number correct	450	39.94	11.69	237	39.24	11.01
MMSE total^*	452	27.52	1.92	238	26.89	2.06
Self-rated health^a ^*	452	2.54	0.87	238	2.84	0.84
Visual acuity^*	452	73.42	11.74	238	71.41	12.66
4-subtest total UFOV^a ^*	448	919.67	274.38	238	1008.34	307.61
Years of education^*	452	13.58	2.58	238	13.00	2.89

Note. Individuals who did not complete baseline UFOV or DSS did complete these tests at later assessments. CES-D = Center for Epidemiological Studies – Depression Scale; DSS = WAIS-R Digit Symbol Substitution; MMSE = Mini-Mental State Examination; UFOV = Useful Field of View Test.

Higher scores indicate more depression, worse health, or poorer performance.

Mean difference p < 0.05.