FIGURE 1.

Regional distribution patterns of plasma Se concentrations (μg/L) in Chinese middle-aged and elderly adults with hypertension¹. ¹Plasma Se concentrations were adjusted for sex, age, BMI, SBP, DBP, history of hypertension, antihypertensive drug use, multivitamin use, smoking, alcohol drinking, meat consumption, and consumption of fruits and vegetables. *p < 0.05, ^**p < 0.001, the average plasma Se concentration of this province significantly differed from that of the province with the relatively highest plasma Se status (Hunan, 88.6 μg/L). The 14 provinces in our study including AH, Anhui (n = 127); BJ, Beijing (n = 197); GC, Gansu (n = 185); GX, Guangxi (n = 200); HB, Hebei (n = 200); HLJ, Heilongjiang (n = 179); HN, Hunan (n = 200); JS, Jiangsu (n = 200); LN, Liaoning (n = 200); NX, Ningxia (n = 182); SC, Sichuan (n = 200); SD, Shandong (n = 172); SX, Shanxi (n = 196); and YN, Yunnan (n = 161).