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采用概率分析法对重庆市620名7～15岁散居中小学生的膳食调查资料进行评价。结果表明,用概率分析法评价膳食调查资料预示各种营养素摄入不足的发生率均高于用人群营养素摄入量均值与RDA作直接对照的结果。所有学生营养素摄入不足的概率均以钙及硫胺素为最高,钙、硫胺素、核黄素、抗坏血酸、锌、蛋白质和铁摄入不足的概率分别为:57.1～79.7％,34.3～60.5％,14.3～43.9％,15.9～31.9％,4.4～24.7％,5.7～14.1％和0.1～5.1％。其中11和13～15岁组多种营养素摄入不足的概率略高于其它年龄组.中小学生膳食结构单调和偏食可能是营养素摄入不足的重要原因.
Probabilistic analysis was used to evaluate the dietary survey data of 620 primary and secondary school students aged 7-15 in Chongqing. The results showed that using probabilistic analysis to evaluate the dietary survey data indicated that the incidence of inadequate intake of various nutrients was higher than the result of using RDA as a direct comparison with the mean value of nutrient intake of the population. All students had the highest intake of calcium and thiamine, and the probabilities of calcium, thiamine, riboflavin, ascorbate, zinc, protein and iron intake were 57.1-79.7% and 34.3 ~ 60.5%, 14.3-43.9%, 15.9-31.9%, 4.4-24.7%, 5.7-14.1% and 0.1-5.1%. Among 11 and 13 to 15 years old group, the probability of inadequate intake of multiple nutrients was slightly higher than that of other age groups.The monotonous and partial eclipse of dietary structure of primary and secondary school students may be the important reason of insufficient nutrient intake.