Associations of the Korean patient placement criteria matching among individuals with alcohol-related problems with treatment completion and abstinence: an observational study

Table 3 Association of KPPC-matched treatment with the duration of alcohol abstinence with and without adjustment for confounders (n = 225)

Predictor variable and category vs reference category	Odds ratio [95% CI]	p	Fit statistics
Predictor variable and category vs reference category	Odds ratio [95% CI]	p	AIC	SC	−2LL
No. of KPPC-matched treatments
Unadjusted model^a			473.15	486.82	465.15
Once vs none	2.29 [1.06–4.95]	0.03
Twice vs none	3.08 [1.57–6.04]	< 0.01
Adjusted model^b
Once vs none	2.23 [1.03–4.86]	0.04	471.71	495.62	457.71
Twice vs none	2.88 [1.44–5.76]	< 0.01
Sex
Male vs female	1.31 [0.74–2.30]	0.35
Employment status
Employed vs unemployed	0.64 [0.32–1.28]	0.21
Previous hospitalization due to AUD
Yes vs no	1.75 [1.04–2.97]	0.04

Two ordinal logistic regression models satisfied the proportional odds assumption at the significance level of 0.05. Although the model-fit statistic AIC was slightly smaller in the adjusted model, the likelihood ratio test based on -2LLs from the two models was non-significant, and the SC was smaller in the unadjusted model
^aThe unadjusted model includes only the independent variable, No. of KPPC-matched treatments
^bThe adjusted model adds Sex, Employment status, and Previous hospitalization due to alcohol use disorder

ISSN: 1940-0640