Prevalence and associated factors of uncontrolled hypertension among hypertensive patients: a nation-wide survey in Thailand.

A total of 65,667 patients with hypertension were included in this study. The greater proportion of participants, 40,834 (62.2%), were females. The average age of participants was 63.9 ± 11.1 years. Uncontrolled hypertension was detected among 16,122 patients (24.6%; 95% CI 24.2-24.9). Among males and females, uncontrolled hypertension was 25.6% (95% CI 25.1-26.2) and 23.9% (95% CI 23.5-24.3) respectively. Multivariate analysis showed that the uncontrolled hypertension was significantly associated with being male, age, regions, hospital levels, diabetes comorbidity, higher body mass index, low density lipoprotein cholesterol level and the number of antihypertensive medications.