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采用铁剂与安慰剂组间相互对照的双盲干预试验研究方法,将80名19至44岁患有铁缺乏非妊娠期的女工随机分配于铁剂组或安慰剂组,跟踪10至12周,观察干预前后血生化指标,工作时间及业余时间总能量消耗,产量,生产效率的变化。 铁剂治疗后平均血红蛋白上升13g/L,血清铁蛋白上升20.3μg/L,红细胞游离原卟啉下降293μg/L,工作时间总能量消耗下降467kJ/d,生产效率增加0.32元/MJ。自身对照t检验及与安慰剂组比较的组间t检验均显示铁剂治疗前后以上各种变化显著。
A double-blind, controlled trial of crossover between iron and placebo was used to randomize 80 women aged 19 to 44 years with iron-deficient nonpregnancy to iron or placebo for 10 to 12 weeks , Observed before and after intervention in blood biochemical indicators, working hours and spare time total energy consumption, output, production efficiency changes. After iron treatment, the average hemoglobin increased by 13g / L, the serum ferritin increased by 20.3μg / L, the erythrocyte free protoporphyrin decreased by 293μg / L, the total energy consumption decreased by 467kJ / d during working hours, and the production efficiency increased by 0.32 yuan / MJ. Self-control t-test and placebo group compared t-test showed that iron above and after the above various changes significantly.