Renin Chang1,2,3, James Cheng-Chung Wei4,5,6, Mei-Chen Lin7, Yao-Min Hung8,9,10. 1. Department of Emergency Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. 2. Department of Recreation Sports Management, Tajen University, Pingtung, Taiwan. 3. Institute of Biotechnology and Chemical Engineering, I-Shou University, Kaohsiung, Taiwan. 4. Division of Allergy, Immunology and Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan. 5. Institute of Medicine, Chung Shan Medical University, Taichung, 40203, Taiwan. 6. Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan. 7. Management Office for Health Data, China Medical University Hospital, Taichung, 40447, Taiwan. 8. Department of Internal Medicine, Kaohsiung Municipal United Hospital, 976, Jhong-hua 1st Rd, Gu-shan Dist., Kaohsiung, 80457, Taiwan. ymhung1@gmail.com. 9. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan. ymhung1@gmail.com. 10. Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan. ymhung1@gmail.com.
Abstract
BACKGROUND: The research is to explore the association between nontyphoidal salmonellosis (NTS) and subsequent gastric cancer. METHODS: We conducted a retrospective study by analyzing hospitalization dataset from the National Health Insurance Research Database in Taiwan. Patients aged 20 years and older with NTS (n = 9 097) admitted between January 1, 2000, and December 31, 2012, were enrolled and followed up until December 31, 2013. The primary outcome was the incidence of gastric cancer. Cox proportional hazards regression was used to estimate the risk of malignancy, accounting for the competing risk of death. In addition, we conducted a sensitivity analysis by propensity score matching and exclusion of malignancy within 1 year observation to minimize measurable confounding and protopathic bias. Negative controls were applied to examine the presence of possible unmeasured confounders in the study. RESULTS: The study included 18 194 patients (9097 in each NTS and non-NTS group). The median follow-up time was 7 years. The incidence density rate of gastric cancer was 0.72 per 1000 person-years for the NTS group and 0.40 per 1000 person-years for the non-NTS group. The NTS group had a modestly higher risk of gastric cancer (aHR, 2.02; 95% CI 1.18-3.45) than the non-NTS group. The sensitivity analyses revealed consistent results. CONCLUSIONS: Patients with NTS are associated with increased risk of subsequent gastric cancer compared with non-NTS patients. Future research is needed to examine whether NTS is parallel, reactive or causative to gastric cancer.
BACKGROUND: The research is to explore the association between nontyphoidal salmonellosis (NTS) and subsequent gastric cancer. METHODS: We conducted a retrospective study by analyzing hospitalization dataset from the National Health Insurance Research Database in Taiwan. Patients aged 20 years and older with NTS (n = 9 097) admitted between January 1, 2000, and December 31, 2012, were enrolled and followed up until December 31, 2013. The primary outcome was the incidence of gastric cancer. Cox proportional hazards regression was used to estimate the risk of malignancy, accounting for the competing risk of death. In addition, we conducted a sensitivity analysis by propensity score matching and exclusion of malignancy within 1 year observation to minimize measurable confounding and protopathic bias. Negative controls were applied to examine the presence of possible unmeasured confounders in the study. RESULTS: The study included 18 194 patients (9097 in each NTS and non-NTS group). The median follow-up time was 7 years. The incidence density rate of gastric cancer was 0.72 per 1000 person-years for the NTS group and 0.40 per 1000 person-years for the non-NTS group. The NTS group had a modestly higher risk of gastric cancer (aHR, 2.02; 95% CI 1.18-3.45) than the non-NTS group. The sensitivity analyses revealed consistent results. CONCLUSIONS: Patients with NTS are associated with increased risk of subsequent gastric cancer compared with non-NTS patients. Future research is needed to examine whether NTS is parallel, reactive or causative to gastric cancer.
Authors: Hilmar Berger; Miguel S Marques; Rike Zietlow; Thomas F Meyer; Jose C Machado; Ceu Figueiredo Journal: Helicobacter Date: 2016-09 Impact factor: 5.753
Authors: Chih-Hui Yun; Wei-Chun Kao; Chung Y Hsu; Renin Chang; Ming-Fang Cheng; Yao-Min Hung Journal: Int J Environ Res Public Health Date: 2022-10-10 Impact factor: 4.614