앞서 언급했듯이 분석을 위해서 성향점수매칭을 실시하였고 매칭 후 처리군과 대조군의 기초통계량은 <표 2>와 같다.
As mentioned earlier, propensity score matching was performed for the analysis, and the basic statistics of the treatment group and the control group after matching are shown in Tables 2 to 4.