title: The relationship between cations and blood pressure in the People's Republic of China.
abstract: Blood pressure was measured in the north and in the south of the People's Republic of China in 1002 men and 1006 women. The 24-hour urinary excretion of sodium, potassium, calcium, magnesium, and creatinine was measured, and the relationship between urinary cations and blood pressure was studied. Blood pressure and 24-hour sodium excretion were higher in northern China than in southern China. With some exceptions, a positive correlation was found between urinary sodium and blood pressure and a negative one between 24-hour urinary potassium excretion and blood pressure. Urinary calcium correlated negatively and urinary magnesium did not correlate significantly with blood pressure. The sodium/potassium ratio correlated positively with blood pressure, and the calcium/magnesium ratio, negatively. This study confirms the positive within-population relationship between sodium intake and blood pressure in Oriental populations.
mesh_terms: D000886:Anthropometry; D001794:Blood Pressure; D002118:Calcium / Q000652:urine*; D002681:China; D002940:Circadian Rhythm; D003971:Diastole; D005260:Female; D006339:Heart Rate; D006801:Humans; D008274:Magnesium / Q000652:urine*; D008297:Male; D011188:Potassium / Q000652:urine*; D012044:Regression Analysis; D012964:Sodium / Q000652:urine*; D013599:Systole
chemical_list: D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium