Results of univariate analysis: Risk factors for complications in blunt chest wall trauma.

OR: odds ratio; CI: confidence interval. Fisher Exact tests were used to analyse categorical variables and Mann-Whitney test for the continuous variables.OR：比值比（odds ratio）；CI：置信区间（confidence interval）。分类变量采用费希尔精确检验（Fisher Exact tests）进行分析，连续变量采用曼-惠特尼检验（Mann-Whitney test）进行分析。