Table 2.

Multiple linear regression results of PDQ-D-20 total score for all participants

Independent variable	β	SE	β’	t	p	β 95%CI
(Constant)	− 17.231	12.212		− 1.411	0.161	− 41.413, 6.951
Age	− 0.113	0.172	− 0.054	− 0.654	0.515	− 0.453, 0.228
Sex	6.153	2.706	0.192	2.274	0.025	0.795, 11.510
Smoking	1.027	4.468	0.019	0.230	0.819	− 7.821, 9.875
GAD-7 score	− 0.240	0.298	− 0.072	− 0.805	0.423	− 0.831, 0.351
PHQ-9 score	1.217	0.321	0.341	3.796	< 0.001	0.582, 1.852
TAS-20 score	0.506	0.154	0.276	3.285	0.001	0.201, 0.811

GAD-7 generalized anxiety disorder-7, PHQ-9 Patient Health Questionnaire depression-9, TAS-20 20-item Toronto Alexithymia Scale, PDQ-D-20 20-item Perceived Deficits Questionnaire-Depression, CI confidence interval

Bold values indicated statistical significance