. 2019 Jan;25(1):10.18553/jmcp.2019.25.1.058. doi: 10.18553/jmcp.2019.25.1.058

Table 2.

Logistic Models for COPD Exacerbations

CTR Measure	Model Specifications		OR (95% CI)
CTR Measure	Model Specifications					Any	Moderate	Severe
Continuous	Full sample, all predictors	CTR	0.988 (0.978-0.999)	0.992 (0.981-1.004)	0.977 (0.963-0.991)
Continuous	Full sample, all predictors			c-statistic	0.748	0.761	0.801
Continuous	Subsample, no severe exacerbation at baseline, all predictors	CTR	0.985 (0.974-0.997)	0.988 (0.975-1.001)	0.974 (0.958-0.991)
Continuous				c-statistic	0.717	0.736	0.754
Continuous	Full sample, medical claim predictors removed (pharmacy-only model)	CTR	0.973 (0.963-0.983)	0.982 (0.971-0.993)	0.953 (0.940-0.966)
Continuous				c-statistic	0.709	0.735	0.728
Dichotomous cut-point 0.7^a	Full sample, all predictors	CTR	0.991 (0.936-1.049)	1.025 (0.961-1.093)	0.921 (0.852-0.995)
Dichotomous cut-point 0.7^a	Full sample, all predictors			c-statistic	0.748	0.761	0.801
Dichotomous cut-point 0.7^a	Full sample, medical claim predictors removed (pharmacy-only model)	CTR	0.939 (0.888-0.992)	0.996 (0.935-1.060)	0.833 (0.774-0.897)
Dichotomous cut-point 0.7^a				c-statistic	0.709	0.734	0.727

^aOR given for CTR ≥ 0.7 vs. < 0.7.

CI = confidence interval; COPD = chronic obstructive pulmonary disorder; CTR = COPD treatment ratio; OR = odds ratio.