Reviews
- Applications of propensity score matching: a case series of articles published in Annals of Coloproctology
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Hwa Jung Kim
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Ann Coloproctol. 2022;38(6):398-402. Published online December 28, 2022
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DOI: https://doi.org/10.3393/ac.2022.01060.0151
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Abstract
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- Propensity score matching (PSM) is an increasingly applied method of ensuring comparability between groups of interest. However, PSM is often applied unconditionally, without precise considerations. The purpose of this study is to provide a nonmathematical guide for clinicians at the stage of designing a PSM-based study. We provide a seed of thought for considering whether applying PSM would be appropriate and, if so, the scope of the list of variables. Although PSM may be simple, its results could vary substantially according to how the propensity score is constructed. Misleading results can be avoided through a critical review of the process of PSM.
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Citations
Citations to this article as recorded by

- An analysis of exogenous harmful substance exposure as risk factors for COPD and hypertension co-morbidity using PSM
Qingyang Chen, Haodong Zhou, Jiarong Tang, Yingbiao Sun, Geriletu Ao, Hongjun Zhao, Xuhong Chang
Frontiers in Public Health.2024;[Epub] CrossRef - Impact of Postoperative Naples Prognostic Score to Predict Survival in Patients with Stage II–III Colorectal Cancer
Su Hyeong Park, Hye Seung Woo, In Kyung Hong, Eun Jung Park
Cancers.2023; 15(20): 5098. CrossRef
Original Article
- Surgical Treatment of Crohn's Disease.
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Kim, Jong Kwan , Lee, Jae Gil , Byun, Chang Gyoo , Sohn, Seung Kook , Kim, Nam Kyu , Min, Jin Sik
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J Korean Soc Coloproctol. 2000;16(6):415-422.
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Abstract
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- PURPOSE
This study was undertaken to investigate the preoperative diagnosis, indication for operation, postoperative complication, postoperative medical treatment and recurrence rate in patients with Crohn's disease who were treated with operation.
METHODS
Forty patients with Crohn's diseases had been operated on at the Department of Surgery, Yonsei University College of Medicine during the period from Jan 1986 to May 1999 and they were reviewed retrospectively. We studies symptoms, surgical indications, preoperative and postoperative treatments, involvement sites, types of operation and recurrence rate in Crohn's disease.
RESULTS
The male to female ratio was 1.5: 1, and age distribution was from 8 to 69 years old with mean age of 33 years old. The duration of symptoms varies from within 1 day to above 10 years and most of them had within 1 month as 17 cases (42.5%). Symptoms are abdominal pain, hematochezia, anorexia, abdominal mass and diarrhea. The most frequent symptom was the abdominal pain as 85%. Crohn's disease was diagnosed only 45% before operation, less than what we expected. In another hand it surprised us find out that tuberculosis enteritis was diagnosed as much as 20%. The most common indication of operation was medical treatment failure as 13 cases, and fistula was 7 cases, intestinal obstruction with stenosis and tumor were 6 cases each other.
The involvement of small bowel was most common as 40%, and the most common operative findings were ulceration and fistula for 17 cases and 12 cases respectively. Small bowel cases were treated with segmental resection and anastomosis in all 16 cases. Large bowel cases were performed right hemicolectomy in 10 cases and total colectomy in 1 case.
Both small and large bowel involvement cases, right hemicolectomy was done in 4 cases, right hemicolectomy and segmental resection of small bowel was done in 6 cases. The recurrence rate of postoperative medical treatment was 16% and 28% for 5 years and 10 years respectively. The recurrence rate with no postoperative medical treatment was 13% and 26% for each 5 years and 10 years. There was no significantly difference in both groups.
CONCLUSION
The major surgical indications for Crohn's disease were medical treatment failure, fistula and intestinal obstruction. Specially in Korea, differential diagnosis with tuberculosis enteritis was very important.
Postoperative complication and recurrence rate has relatively low incidence. Our study suggest that postoperative medical treatment was controversial.