Prevalence of Brick Tea-Type XXXX in the Tibet Autonomous Region.

@entity1 @entity3296 @entity922 @entity1388 @entity1141
BACKGROUND: The prevalence of brick tea-type @entity3296 is high in Tibet because of the habit of drinking brick tea in this region. Brick tea-type @entity3296 has become an urgent public health problem in China. METHODS: A cross-sectional survey was conducted to investigate prevalence of brick tea-type @entity3296 in all districts of Tibet using a stratified cluster sampling method. @entity3296 in @entity1 aged 8-12 years and @entity922 in adults were diagnosed according to the national criteria. A total of 423 @entity1 and 1320 adults participated in the study. Samples of drinking water, brick tea, brick tea infusion (or buttered tea), and urine were collected and measured for @entity1388 concentrations by the @entity1388 ion selective electrode method. RESULTS: The @entity1388 level in all but one of the brick tea samples was above the national standard. The average daily @entity1388 intake from drinking brick tea in all seven districts in Tibet was much higher than the national standard. The prevalence of dental @entity3296 was 33.57%, and the prevalence of @entity922 was 46.06%. The average daily @entity1388 intake from drinking brick tea (r = 0.292, P < 0.05), urine @entity1388 concentrations in @entity1 (r = 0.134, P < 0.05), urine @entity1388 concentrations in adults (r = 0.162, P < 0.05), and altitude (r = 0.276, P < 0.05) were positively correlated with the prevalence of brick tea-type @entity3296 . Herdsmen had the highest @entity1388 exposure and the most severe @entity1141 . CONCLUSIONS: Brick tea-type @entity3296 in Tibet is more serious than in other parts of China. The altitude and occupational factors are important risk factors for brick tea-type @entity3296 .
