'한글 원문'

검색된 논문 중 case-control 연구에 대해서 The Scottish Intercollegiate Guidelines Network(SIGN) 50 case-control studies checklist[1]로 질 평가를 수행하였다. SIGN checklist는 11개의 internal validity assessment items과 4개의 overall assessment items으로 구성된 도구이다. 각각의 연구들은 두 저자에 의해서 평가되었고, 논의를 통해서 (through consensus) 질 평가 결과를 3개의 범주(high quality(++), acceptable(+), low quality(0))로 나누었다. low quality 연구의 경우 분석에서 제외하였고, case만을 보고한 연구에 대해서는 질 평가를 수행하지 않았다.

'영문 번역'

Study on case-control among the papers reviewed was assessed based on the Scottish Intercollegiate Guidelines Network(SIGN) 50 case-control studies checklist[1]. SIGN checklist is a tool comprised of 11 internal validity assessment items and four overall assessment items. Each research was assessed by two students and the result of quality assessment was classified into three categories; high quality(++), acceptable(+) and low quality(0). Studies belonging to low quality category were excluded from analysis and quality assessment was not implemented to study that reported case only.