Table 9.

Means for the 4-Item and 9-Item UCLA Loneliness Scales.

Models	Group	M	SD	95% CI	Very high loneliness threshold
UCLA-LS-4 Russell et al. (1980) a	18–25	9.22	2.61	[9.00, 9.42]	14.4
	26–35	8.44	2.59	[8.30, 8.58]	13.66
	36–45	8.45	2.61	[8.34, 8.57]	13.59
	46–55	8.31	2.57	[8.22, 8.39]	13.43
	56–65	8.19	2.56	[8.12, 8.25]	13.15
	66–75	8.14	2.48	[8.07, 8.21]	13.06
	76+	8.11	2.46	[7.96, 8.26]	8.11
UCLA-LS-9 Hawkley et al. (2005) b
F1: Intimate Connectedness	18–25	7.99	2.17	[7.81, 8.16]	12.33
	26–35	7.49	2.18	[7.36, 7.60]	11.85
	36–45	7.43	2.37	[7.32, 7.54]	12.17
	46–55	7.35	2.29	[7.28, 7.42]	11.93
	56–65	7.24	2.32	[7.18, 7.30]	11.88
	66–75	7.08	2.3	[7.02, 7.15]	11.68
	76+	7.11	2.33	[6.97, 7.26]	11.77
F2: Relational Connectedness	18–25	4.67	1.91	[4.52, 4.81]	8.49
	26–35	4.41	1.84	[4.31, 4.51]	8.09
	36–45	4.51	1.89	[4.42, 4.59]	8.29
	46–55	4.44	1.86	[4.38, 4.50]	8.16
	56–65	4.44	1.87	[4.39, 4.48]	8.18
	66–75	4.44	1.83	[4.39, 4.49]	8.1
	76+	4.49	1.76	[4.38, 4.60]	8.01
F3: Collective Connectedness	18–25	6.19	2.05	[6.03, 6.36]	10.29
	26–35	5.88	2.02	[5.77, 5.99]	9.92
	36–45	5.78	2.04	[5.69, 5.88]	9.86
	46–55	5.66	2.01	[5.59, 5.72]	9.68
	56–65	5.51	1.98	[5.46, 5.56]	9.47
	66–75	5.36	1.9	[5.30, 5.41]	9.16
	76+	5.34	1.95	[5.22, 5.45]	9.24

Note. CI = confidence interval; UCLA-LS-4 = University of California Los Angeles, Loneliness Scale-4-item measures; UCLA-LS-9 = University of California Los Angeles, Loneliness Scale-9-item measures.

^aHigher scores here indicate higher levels of loneliness. ^b Higher scores on the UCLA-LS-9 indicate higher levels of loneliness/low connectedness.