Table 5.

Multivariable analysis taking the depression, anxiety and stress scores as dependent variables and the TMDseverity score as an independent variable

Model 1: Linear regression taking depression (PHQ-9 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
TMD severity (FAI score)	0.10	0.40	< 0.001	0.08	0.13
Age	-0.06	−0.18	< 0.001	−0.09	− 0.03
Working hours per day	0.17	0.10	0.028	0.02	0.31
Bruxism at night (yes vs no*)	1.12	0.10	0.046	0.02	2.22
Model 2: Linear regression taking anxiety (GAD-7 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
TMD severity (FAI score)	0.10	0.45	< 0.001	0.08	0.12
Hours on phone per day	0.13	0.13	0.005	0.04	0.22
Model 3: Linear regression taking stress (BDS22 score) as the dependent variable.
Variable	UB	SB	p	95% Confidence Interval
TMD severity (FAI score)	0.23	0.42	< 0.001	0.18	0.28
Hours on phone per day	0.37	0.15	< 0.001	0.15	0.58
Age	−0.07	−0.10	0.031	−0.13	− 0.01

*Reference group; UB Unstandardized Beta, SB Standardized Beta

Variables entered in the models: Model 1: Bruxism at night, age, FAI pain severity score, hours on the phone per day; Model 2: FAI pain severity score, hours on the phone per day; Model 3: FAI pain severity score, hours on the phone per day, age.