de Portela M L, Esther Río M, Zeni S
Arch Latinoam Nutr. 1983 Sep;33(3):633-41.
The relationship between calcium and creatinine in basal urine for evaluating its usefulness as an indicator of calcium nutritional status was evaluated. Samples of basal urine were collected form a group of 5 to 12-year-old school children who followed a three-month program of dietary complementation. The calcium to creatinine ratio showed no correlation with daily total calcium intake. However, a correlation was found when intake was expressed in mg per kg of body weight (r = 0.67) and increased significantly when data were grouped according to growth rate (r = 0.85). On this basis, the Ca/Creat. ratio was analyzed as a function of weight gain (g/kg) for calcium intake: higher and lower than 10 mg/kg/day (4 = 0.82 and 0.89, respectively), the intercept of each line with the Y axis (null weight gain) being 0.096 and 0.068, respectively. These findings indicate the possibility of using the Ca/Creat. ratio in field studies as an indicator of nutritional status of the population in regard to calcium.
评估了基础尿中钙与肌酐的关系，以评价其作为钙营养状况指标的有效性。从一组5至12岁的学童中收集基础尿样本，这些学童参加了为期三个月的膳食补充计划。钙与肌酐的比值与每日总钙摄入量无相关性。然而，当摄入量以每千克体重毫克数表示时发现存在相关性（r = 0.67），并且当根据生长速率对数据进行分组时相关性显著增加（r = 0.85）。在此基础上，分析了钙摄入量按体重增加（克/千克）的函数关系下的钙/肌酐比值：钙摄入量高于和低于10毫克/千克/天（分别为r = 0.82和0.89），每条线与Y轴（零体重增加）的截距分别为0.096和0.068。这些发现表明在现场研究中使用钙/肌酐比值作为人群钙营养状况指标的可能性。
