Oral health-related quality of life among a group of patients with substance use disorders in rehabilitation treatment: a cross-sectional study

Table 6 Factors associated with OIDP of in-treatment patients with substance use disorders based on a linear regression model (n = 267)

Variable	Beta coefficient	p value	95% CI
Age	− 0.03	0.83	− 0.65 to 0.52
Socioeconomic status^a	0.12	0.09	− 0.42 to 5.73
Main drug (heroin)^b
Opium	− 0.03	0.72	− 8.78 to 6.04
Others	− 0.01	0.85	− 12.21 to 10.05
Age at start of drug use	− 0.06	0.50	− 0.79 to 0.38
Duration of addiction	− 0.08	0.49	− 0.81 to 0.39
Duration of current treatment	− 0.08	0.28	− 2.19 to 0.63
Decayed teeth	0.19	0.02	0.15–1.93
Filled teeth	− 0.14	0.06	− 2.91 to 0.03
Decayed, missing, filled teeth	0.34	0.002	0.43–1.92
Dentition status (edentulous)^b
Dentate	0.14	0.25	− 4.92 to 18.57

R² = 0.12
^aCombination of the following variables: education, marital status, employment status, and type of treatment center
^bReference group

ISSN: 1472-6831