Table 2.

Cox regression of nonusage attrition (n=233).

Variables	Bivariate		Multivariate
	HRa (95% CI)	P value	HR (95% CI)	P value
Baseline loneliness (0-11)	1.00 (0.95-1.06)	.97	1.00 (0.94-1.07)	.91
Active coping (0-3)	0.81 (0.64-1.03)	.09	0.73 (0.57-0.93)	.01
Regulative coping (0-3)	1.04 (0.84-1.24)	.70	1.01 (0.83-1.22)	.94
Active-reflective sequence (vs reversed)	0.81 (0.59-1.11)	.19	0.71 (0.50-1.00)	.049
Tempo in first intervention week (−19.4 to 0)	0.89 (0.85-0.93)	<.001	0.94 (0.89-1.00)	.049
Number of diaries in first intervention week (0-14)	0.79 (0.73-0.85)	<.001	0.79 (0.72-0.86)	<.001
Age (50-86 years)	0.99 (0.96-1.01)	.26	0.99 (0.97-1.02)	.43
Female (vs male)	0.80 (0.55-1.15)	.23	1.14 (0.75-1.72)	.55
Education (1-9)	0.96 (0.89-1.04)	.32	0.92 (0.84-0.96)	.04
Partner (vs no partner)	1.19 (0.86-1.65)	.29	0.95 (0.66-1.36)	.77
Social self-efficacy (4-20)	1.01 (0.96-1.06)	.77	0.99 (0.93-1.06)	.84
ICTb proficiency: help needed (1-6)	0.93 (0.80-1.07)	.29	0.96 (0.82-1.12)	.59
Number of types of ICT devices (1-5)	1.16 (1.00-1.34)	.048	1.14 (0.97-1.35)	.12

^aHR: hazard ratio.

^bICT: information and communication technology.