Applicability of the OPTA Questionnaire for Patients with Stable Ischemic Heart Disease in Indian Clinical Practice: A Cross-sectional, Real-word Evidence Study

Angina is the symptomatic form of stable ischemic heart disease (SIHD). The OPtimal Treatment of Angina (OPTA) questionnaire was developed and validated to overcome the lack of a standardized and accurate tool to assess patients' clinical conditions with SIHD. This study aimed to understand the applicability of OPTA in patients with SIHD in routine clinical practice in India. In this cross-sectional, single-visit study, 344 patients with SIHD were enrolled. Study endpoints were physicians' agreement on the applicability of OPTA, the usefulness of OPTA in assessing degree of impairment in daily activities of patients, and its positive predictive value (PPV). All enrolled patients completed the study. The mean [standard deviation (SD)] age was 56.6 (10.77) years, with a majority of patients being male (69.5%) and on antianginal treatment for >1 year (80.4%). Physicians of all participating patients agreed that the OPTA questionnaire could accurately assess whether treatment received by patients was optimal (100% agreement rate). No or moderate degree of impairment of daily activities was reported by 93.9% and 73.0% of patients for one and two health-related questions, respectively. The PPV and sensitivity of the questionnaire were 88.97% [confidence interval (CI): 87.58%, 90.22%] and 39.33% (CI: 34.01%, 44.85%), respectively. The OPTA questionnaire showed good agreement regarding health status between physicians and patients and could be used to periodically assess and guide clinical judgment in the management of SIHD in India. Further assessment of the impact of various treatments temporally and in the long term may be warranted.