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김달호,우남교,조준우,Kim, Dal Ho,Woo, Namkyo,Jo, Junwoo 한국데이터정보과학회 2016 한국데이터정보과학회지 Vol.27 No.6
본 연구는 소상공인과 임차상인 보호정책을 지원하고, 권리금 분쟁소송 등에 참고자료로 활용할 뿐만 아니라 상가권리금 현황 파악을 위한 최초 조사를 실시하기 위한 표본설계 연구이다. 개별 임차 사업체 단위로 발생하는 권리금의 특성상 통계청의 전국사업체조사를 모집단으로 활용 하였으며, 우선적인 정보 제공이 필요한 7개 도시지역을 반영하였다. 전체 표본수는 8,000개로 하였으며, 7개 도시지역을 부차모집단으로 하고 지역별 상권별 표본수는 비례배분 하였으며, 상권내 업종은 제곱근비례배분 하였다. 목표오차를 활용하여 최종 표본수를 조정 하였으며, 표본설계가중치를 이용한 권리금 평균 추정량과 추정오차, 구간추정 공식을 유도하였으며, 이를 통해 도시별 상권별 및 업종별 통계 추정과 추정의 정도에 대한 평가를 가능하게 하였다. In this paper, we study a sample design for survey on goodwill in retail properties to provide a protecting policy for small traders and tenants, to use basic data for a dispute case related to goodwill. Since goodwill in retail properties is occurred by individual rent company, we use the census on establishments from the Statistics Korea as population. First of all, we consider preferentially seven metropolitan cities in which there are more than half of population. Total sample size is decided as 8,000. We allocate the sample size for markets as stratum in each city using proportional formula and the sample size for industrial classifications in each market using root proportional formula. Also we compute survey weights and calculate estimators, standard errors and interval of estimators for each characteristic such as type of establishments and market in seven metropolitan cities.
프로톤펌프저해제 사용과 폐렴 발생의 연관성 : 국민건강보험공단 표본코호트자료를 사용한 환자-대조군 연구
김종주(Jong Joo Kim),장은진(Eun Jin Jang),조준우(Junwoo Jo),손현순(Hyun Soon Sohn) 대한약학회 2020 약학회지 Vol.64 No.2
Recently, the use of proton pump inhibitors in Korea has increased rapidly and the risk of pneumonia has been raised in PPI users. We aimed to investigate the association between PPI and pneumonia and to identify the risk factors. In this case-control study, we used the National Health Insurance Sample Cohort Database (2002 to 2013). Cases were defined as subjects hospitalized or visited emergency unit with pneumonia from January 2013 to December 2013, and up to four controls were matched to each case by age, gender among subjects without pneumonia. Conditional logistic regression was used to calculate the odds ratio (OR) and adjusted odds ratio (aOR) and 95% confidence intervals (CI). A total of 2,366 cases and 9,464 controls were included in this analysis. The crude odds ratio of PPI use and pneumonia was 1.15 (95% CI, 1.01-1.30), and the association for most recent use of PPI within 30 days before hospitalization with pneumonia became stronger (OR, 1.33; 95% CI, 1.04-1.70). Comorbidities adjusted odds ratio was 1.15 (95% CI, 1.01- 1.32), but aOR in recent PPI users was not statistically significant (aOR, 1.18; 95% CI, 0.90-1.54). This study demonstrated that PPI use is associated with increased risk of pneumonia, but further studies reflecting patient s clinical condition and precious PPI use are necessary.