APPENDIX TABLE 1.

Linear regression analysis of loneliness with 2018/2019 pre-pandemic data.

	Model 1 R2 = 0.008				Model 2 R2 = 0.019				Model 3 R2 = 0.039				Model 4 R2 = 0.114
			95% CI				95% CI				95% CI				95% CI
	t	B	LB	UB	t	B	LB	UB	t	B	LB	UB	t	B	LB	UB
Sex	−0.040	−0.003	−0.142	0.136	−0.376	−0.027	−0.167	0.114	−0.471	−0.034	−0.174	0.106	−0.167	−0.012	−0.149	0.126
Age	−0.107	−0.002	−0.032	0.029	0.248	0.004	−0.027	0.035	0.208	0.003	−0.027	0.034	0.114	0.002	−0.028	0.031
Physical activity	−1.674	−0.030	−0.065	0.005	−1.555	−0.027	−0.062	0.007	−0.265	−0.005	−0.046	0.035	0.395	0.008	−0.031	0.047
Partner status					−2.016	−0.186	−0.368	−0.005	−1.858	−0.171	−0.353	0.010	−1.905	−0.170	−0.346	0.005
PA intention									0.039	0.002	−0.106	0.110	0.189	0.010	−0.094	0.114
PA plans									−0.485	−0.022	−0.111	0.067	−0.575	−0.025	−0.111	0.061
PA self-efficacy									−2.401	−0.118	−0.214	−0.021	−2.138	−0.102	−0.195	−0.008
Quality of life													−4.018	−0.134	−0.200	−0.069
Work-life balance													3.891	0.104	0.051	0.156

Linear regression results are depicted as unstandardized coefficients with corresponding 95% confidence-intervals. Adjusted R² is reported. 95% CI, 95% confidence interval; t, t-value; B, unstandardized regression coefficient; LB, lower bound; UB, upper bound; PA physical activity.