... as an indicator of quality care. Inquiry 1988, 25:25-36.25. Kaplan MH, Feinstein AR: The importance of classifying initialco-morbidity in evaluating the outcome of diabetes mellitus.J Chronic ... other government-provided, unin-sured) vs. commercial (e.g., HMO, PPO, private)], sixdomains of perceived quality of care, control of pain and discomfort (definitely vs. somewhat /not at all) and ... treatment information, health information, confidence in providers, and coordination of care. Two items measuring patients' perceptions of howwell healthcare providers controlled their pain/discom-fort...