TABLE 2.

Group means and standard deviations for the younger old (65–79) and the older old (80–98) participants (N = 300).

	Younger old		Older old
Variable	Mean	STD	Mean	STD	t-test
Age	71.85	4.27	84.62	4.13	24.73**
Health	3.05	0.85	3.00	0.90	−0.47
Depression	11.36	8.86	10.62	9.40	−0.67
ISEL appraisal	8.89	2.56	8.35	2.80	−1.68
ISEL tangible	8.83	2.67	8.55	2.97	−0.83
ISEL belonging	7.94	2.73	7.10	2.70	−2.54*
Social isolation	19.06	4.07	19.59	3.64	1.19
Social network score	26.75	7.05	25.19	7.96	−1.80
UCLA loneliness	39.45	10.01	39.65	10.02	0.07
Digit symbol	35.01	10.73	34.85	12.45	−0.11
Letter sets	8.97	5.12	7.82	5.40	−1.72
Trails A	5.00	0.51	5.08	0.46	0.86

ISEL, Interpersonal Support Evaluation List; CES-D, Center for Epidemiologic Studies Depression Scale.

*p < 0.05, **p < 0.01.