The effect of patient and site characteristics on predictors of care experiences among PCQ-H sample population

1. After consideration of persons with missing variables, the final model consists of 355 informative study participants. Overall R-squared for the model shown was 0.36, F = 8.95, p ≤0.0001. For variables composed of multiple categories, P values reflect type 3 tests of fixed effects.
2. General Health is construed as a 5-step variable (Poor, Fair, Good, Very Good, and Excellent).
3. Depression/Anxiety and Severe Psychiatric Symptoms scores are computed from relevant subscales on the Colorado Symptom Index (see Methods).
4. Drug Severity and Alcohol Severity derived from World Health Organization Alcohol, Smoking and Substance Involvement Screening Test Global Continuum Illicit Drug Use Score and Specific Current Alcohol Involvement Score, respectively.
5. Perceived Extent of Choice derived from 4-point Likert response to the item “I can switch primary care providers if I ask”.
6. Social Support derived from 3 items of the “Strong Ties” scale related to companionship and friendship (see Methods).
1.