Nicotine and PM2.5 concentrations (µg/m3) by area and smoking regulation (paired samples). IMPASHS study, 2009–2011.
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aWilcoxon test for comparison of medians from indoor/outdoor areas.bMann-Whitney U-test for comparison of medians from areas where smoking was allowed/banned.*p**p
a. 威尔科克森检验（Wilcoxon test）：用于比较室内/室外区域的中位数。b. 曼-惠特尼U检验（Mann-Whitney U-test）：用于比较允许吸烟与禁止吸烟区域的中位数。*p**p
创建时间：
2015-12-02
