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目的建立煤矿接尘工人肺通气功能预测值方程,为接尘工人肺通气功能的判定提供依据。方法 2011年3-8月,2994名某矿业集团接尘工人进行职业健康体检,1389人肺通气功能测试结果正常。从肺通气功能正常者中选取1139人用于建立线性预测值方程,250人用于预测值方程的回代检验。结果年龄与FVC、FEV1、FEV1%、MMF和PEFR均呈负相关(P<0.05),身高与FEV1%呈负相关,与其他指标呈正相关,体重与MMF呈负相关,与FVC、PEFR呈正相关(P<0.05)。以年龄、身高、体重为自变量,肺通气功能各指标为因变量建立预测值回归方程,将预测值回归方程经原始资料、回代资料进行回代检验,符合率均大于90%,且原始资料与回代资料的肺通气功能指标差异无显著性(P>0.05)。应用建立的预测值方程得出的预测值比固化在仪器内的预测值低,差别有统计学意义(P<0.05)。结论通过建立的5项肺通气功能指标的预测值方程得出的正常预测值较固化仪器中的预测值效果好。
Objective To establish the predictive value equation of lung ventilation for workers exposed to dust in coal mines and provide basis for the determination of pulmonary ventilation in workers exposed to dust. Methods From March to August 2011, 2994 workers in a mining group engaged in occupational health examination carried out occupational health examination, and 1389 people had normal pulmonary function tests. Eleven patients were selected from patients with normal lung ventilation to establish a linear predictive value equation and 250 to be used for the back-test of the predictive value equation. RESULTS: The age was negatively correlated with FVC, FEV1, FEV1%, MMF and PEFR (P <0.05). The height was negatively correlated with FEV1% and positively correlated with other parameters. Body weight was negatively correlated with MMF and positively correlated with FVC and PEFR (P <0.05). The age, height and weight as independent variables, pulmonary ventilation function index as the dependent variable to establish the regression equation of predictive value, the predictive value of the regression equation by the original data, back to the data back to the test, the coincidence rate was greater than 90%, and the original There was no significant difference in pulmonary function parameters between the data and the data of back-substitution (P> 0.05). The predicted value obtained by using the established predictive value equation is lower than the predictive value fixed in the instrument, with a significant difference (P <0.05). Conclusions The normal predictive value obtained from the predicted value equations of the five pulmonary ventilatory function indexes is better than the predictive value of the curing instrument.