Table 2

- Multiple Regression Predictors of the depressive symptoms severity level in headache/migraine patients with history of head-neck injury

^*Independent variable	Beta coefficient	Standard error	T values	P-values	Model unadjusted R2; adjusted R2; P value
Headache clinical diagnosis	0.19	0.20	0.94	0.35	0.14; 0.07; 0.05
Sports activity	-1.27	0.72	-1.76	0.08
Currently under treatment for medical conditions	1.18	0.76	1.56	0.12
Family history of migraine or chronic headache	1.77	0.78	2.27	0.02
Use of migraine medication	0.82	0.54	1.53	0.13
Marital status	0.03	0.77	0.04	0.97
Complaint of insufficient sleep	0.16	0.73	0.23	0.82
Gender	-0.30	0.70	-0.42	0.67
Age	0.02	0.06	0.34	0.73
Intercept	0.87	2.11	0.41	0.68

↵* Unstandardized beta coefficient for intercept, for all other independent variables standardized beta coefficients are shown. Depressive symptoms severity level was assessed by DASS-21 (Depression, Anxiety Stress Scale-21).