Analysis on vascular risk factors accompanied with high-normal blood pressure among Uygur, Kazak, Mongolian and Han populations in Boertala region of Xinjiang, China.

Abstract

To study the prevalence and distribution of high-normal blood pressure (BP) and the prevalence rates of risk factors related to cardiovascular diseases (CVD) among Uygur, Kazak, Mongolian and Han populations in Boertala Mongol Autonomous Prefecture of Xinjiang. 4325 Subjects, with numbers of Uygur, Kazak, Mongolian, Han ethnicities as 1247, 1047, 817, 1214 cases, respectively and aged 20 - 79 years, were selected from the cross-sectional study on hypertension in Boertala Mongol Autonomous Prefecture of Xinjiang. The prevalence rates of related risk factors on CVD were analyzed among multiethnic populations with high-normal BP. (1) The prevalence rates of high-normal BP were 39.2%, 34.5%, 36.0%, 36.5% respectively in Uygur, Kazak, Mongolian, Han populations. The prevalence rate of aged < 40 years in Uygur, Kazak, Mongolian was higher than that of aged 40 - 60 (P = 0.000, 0.006, 0.016 respectively in Uygur, Kazak, Mongolian) and > 60 years (all the P = 0.000 in the three ethnic populations) in the same ethnic population. (2) In the high-normal BP groups, subjects with both SBP (120 - 139 mm Hg) and DBP (80 - 89 mm Hg) at high-normal BP level accounted for the majority (> 45%) while subjects with only DBP (80 - 89 mm Hg) at high-normal BP level had the lowest prevalence rate (> 13%). (3) The prevalence rates of overweight-obesity (body mass index >/= 24.0 kg/m(2)), visceral obesity (waist circumference >/= male 85 cm/female 80 cm), dyslipidemia and >/= 1 risk factors of CVD in multiethnic populations respectively were >/= 57%, 62%, 43% and 82%. (4) Analyzed by multiple regression, aging, over-weight and or obesity, being male etc. were risk factors for high-normal BP. High-normal blood pressure was common among aged 20 - 79 years Uygur, Kazak, Mongolian, Han populations, especially among people < 40 years, in Xinjiang Boertala region, which was often accompanied by others risk factors of cardiovascular disease. Prevention and control programs on risk factors for population with high-normal blood pressure need to be strongly advocated.