Analysis of influencing factors of anxiety and depression in patients with periodontitis

Table 2 Description of main independent variables

Independent variable	Variable declaration	Assignment condition
Age	Binary variable	0 ≤ 60 yr, 1 ≥ 60 yr
Hope level	Binary variable	0 = medium high level, 1 = low level
Education level	Binary variable	0 = high school and below, 1 = college and above
Disease perception	Binary variable	0 = poor, 1 = good
Sleep disorder	Binary variable	0 = yes, 1 = no
SCSQ negative coping dimension score	Continuous variable	-
SCSQ positive coping dimension score	Continuous variable	-
Dental fears	Continuous variable	-

SCSQ: Simplified coping style questionnaire.