LAUSR

Objectives: To assess the trend of a cohort hypertension (HT): Doctor Diagnosed Hypertension (DDH), Pre-hypertension (PHT), Undiagnosed HT (UDH), Controlled and Uncontrolled HT (UHT, CHT) and progression. Methods: Population from a randomized open cohort of a longitudinal study, inception 2001. Study information collected from periodic cross sectional studies: questionnaire based, physical examination and obstructive sleep apnoea. Blood pressure measured by electronic monitor in sitting position at home, door to door visits. Mean of three readings stabilized after rest within 3 mmHg recorded. JNC-8 guideline used for classification of hypertension. All types of HT except DDH were measured. Results: Prevalence Trends: HT and HTstage2 decreased by 0.32% and 2.74% respectively, HTstage1 increased by 2.42% in 11yrs, (N2204) 2006–2017. DDH rose by 8% in 10 yrs, 2001 to 2011 (N9046), by 13% in 5 yrs 2012–17 (N680), and by 22.63% in 17 yrs 2001- 2017, One year rise of DDH 2011–2012, 1.72% (N5347). UDH decreased by 2.86% in 5 years 2012–17 (N680). The proportion of UCH among DDH decreased by 13.4% in 5 yrs (2012 to 2017). PHT rose by 5% in 6 yrs 2006 to 2012 (N2204) and 3% in next 5 yrs 2012 to 2017 (N680). Progression: Among PHT (n228), 23.68% became normotensive and 30.26% became hypertensive in 6 years (2006–2012). Among normotensive (n376), 30.05% became pre-hypertensive and 15.43% became hypertensive in the same period. Conclusion: Trend of types of hypertension is uneven, undiagnosed, uncontrolled decreased. Significant numbers of normotensive and pre-hypertensive groups have progressed at pathological level in 6 yrs, 2006–2012. Numbers are small.