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Self‐reported measures of health, in the context of developed countries, are well‐researched and commonly regarded as reliable predictors of the underlying health of the population. However, the validity of these measures is under‐researched and questionable in the context of low‐ and middle‐income countries. The authors used Longitudinal Ageing Study in India (LASI) survey data from India to compare self‐reported hypertension with biometrically‐measured hypertension. The results are reported in terms of sensitivity, specificity, and kappa as a measure of agreement. Logistic regression was undertaken to examine the characteristics of those who were unaware of their hypertensive status. Our analysis showed a low sensitivity of 56% and a high specificity of 90.5%. Agreement between self‐reported data and biometric measurement of hypertension was observed to be moderate (κ = 0.48). Large variations were observed among states and sub‐groups. The odds of false negative reporting of hypertension were lower in the individuals with higher age, high education, and greater wealth status. The authors conclude that self‐reported hypertension has important limitations and may be a source of systematic bias. It is recommended that planning and policy‐making in India be based more on an objective assessment of hypertension.

Validity of self‐reported hypertension in India: Evidence from nationally representative survey of adult population over 45 years