Table 4.

Multivariable analysis taking the depression, anxiety and stress scores as dependent variables and the presence/absence of TMD as an independent variable

Model 1: Linear regression taking depression (PHQ-9 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
Age	-0.09	−0.26	< 0.001	− 0.12	− 0.05
Bruxism at night (yes vs no*)	2.29	0.20	< 0.001	1.13	3.44
Working hours per day	0.21	0.13	0.009	0.05	0.37
Presence vs absence* of TMD	0.92	0.08	0.137	−0.29	2.12
Model 2: Linear regression taking anxiety (GAD-7 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
Hours on phone per day	0.18	0.18	< 0.001	0.08	0.28
Presence vs absence* of TMD	1.39	0.14	0.006	0.40	2.39
Model 3: Linear regression taking stress (BDS22 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
Hours on phone per day	0.43	0.18	< 0.001	0.20	0.67
Age	−0.12	−0.17	0.001	−0.18	−0.05
Presence vs absence* of TMD	3.48	0.15	0.003	1.22	5.74

*Reference group; UB Unstandardized Beta, SB Standardized Beta