德尔菲法在地铁运行环境卫生学评价指标筛选中的应用

[目的]首次建立适用于地铁运行环境卫生学评价的指标体系。[方法]通过广泛收集文献资料初步建立备选评价指标体系,采用德尔菲法对备选指标进行筛选。[结果]两轮咨询专家积极系数分别为90％和100％,专家权威程度平均0．73。最终入选的12种检测指标（其中,物理性指标、化学性指标以及生物性指标各4种）的变异系数均小于0.3,最终的协调系数为0．942,x^2=32．02,P〈0．10。[结论]参与专家非常重视本项研究,专家积极性、权威程度及协调性均较高,表明本指标体系作为地铁运行环境卫生学评价指标,可信程度较高,能够准确反映地铁运行环境的空气质量状况。

Application of Delphi Method in Screening Hygienical Evaluation Indices for Metro Operation Environment

[ Objective ] To establish a hygienical evaluation system suitable for metro operation environment. [ Methods ] An alternative evaluation indices system was established based on literature review, then the indices were screened using Delphi method. [ Results ] Two rounds of experts consultations showed the responding rates of experts were 90% and 100% respectively and the mean of expert authoritative coefficients was 0.73. Lastly, 12 detectable indices （ four indices for each of physical, chemical and biological indicator groups ）were selected to combined final evaluation indices system. All variance coefficients of these 12 indices were less than 0.3. Additionally, the final coordination coefficient was 0.942 and the P value of the Chi-square test was less than 0.10, ）f = 32.03. [ Conclusion ] Experts involved all paid more attention to this study. The desirable responding rates, authoritative coefficients and coordination coefficients demonstrated that the indices system is reliable and may truly reflect the condition of metro operation air quality.