Do joint national committee VII criteria also need to take non pharmacological measures into consideration? - Empirical evidence from slum resettlement colony from Delhi

Background: Currently Joint National Committee (JNC) VII criteria are used worldwide to diagnose hypertension but it does not take non pharmacological measures into consideration. Also, it does not consider Indian system of medicine. Objectives: To assess whether JNC VII in its present form is valid to diagnose hypertension correctly or revision is required especially for Indian communities where such practices are prevalent. Material and methods: The present community based cross-sectional study was carried out in Nand Nagri, a slum resettlement of East Delhi which comes under field practice area of the Department of Community Medicine, UCMS, Delhi from August 2010 to February 2012. Total 310 subjects aged 20-59 years were selected through multistage systematic random sample. Though the blood pressure cut-offs considered in our criteria was similar to the JNC VII cut-offs (SBP ?140 mmHg and or DBP ?90 mmHg), the difference was in the last part of JNC VII definition of hypertension i.e. treatment by anti hypertensive medicines; our criteria comprised of this statement as “any anti hypertensive measure”. Chi-square (χ?) test was applied for analysis. Results: Overall 54 were found to have hypertension by JNC VII criteria whereas 61 by our criteria. Seven patients who were not hypertensive by JNC VII but hypertensive by our criteria and the difference was found to be statistically highly significant (p<0.001). Exercise was the most common non pharmacological measure adopted by male gender where as in females, salt restriction was the most common measure adopted. Conclusion: Our study emphasized inclusion of non-drug therapy measures into consideration while making diagnosis of hypertension in our setup.