Tuyển tập các báo cáo nghiên cứu khoa học ngành y học tạp chí Medical Sciences dành cho các bạn sinh viên ngành y tham khảo đề tài: Comparative study of control selection in a national population -based case-control study: Estimating risk of smoking on cancer deaths in Chinese men. | Int. J. Med. Sci. 2009 6 329 International Journal of Medical Sciences 2009 6 6 329-337 Ivyspring International Publisher. All rights reserved Research Paper Comparative study of control selection in a national population -based case-control study Estimating risk of smoking on cancer deaths in Chinese men Jingmei Jiang1 Boqi Liu2 H Philip C. Nasca3 Wei Han1 Xiaonong Zou2 Xianjia Zeng1 Xiaobing Tian1 Yanping Wu2 Ping Zhao2 Junyao Li2 1. Department of Epidemiology and Medical Statistics Peking Union Medical College 2. Department of Epidemiology National Cancer Institute Chinese Academy of Medical Sciences 3. Department of Epidemiology and Biostatistics SUNY Albany the USA H Correspondence to Professor Boqi Liu 17 Pan Jia Yuan Nan Li Beijing 100021 National Cancer Institute Chinese Academy of Medical Sciences China. Tel 86-10-87788441 Fax 86-10-85370653 E- mail address wangjbo@ Received Accepted Published Abstract Purpose To assess the validation of a novel control selection design by comparing the consistency between the new design and a routine design in a large case-control study that was incorporated into a nationwide mortality survey in China. Methods A nationwide mortality study was conducted during 1989-1991. Surviving spouses or other relatives of all adults who died during 1986-1988 provided detailed information about their own as well as the deceased person s smoking history. In this study 130 079 males who died of various smoking-related cancers at age 35 or over were taken as cases while 103 248 male surviving spouses same age range with cases of women who died during the same period and 49 331 males who died from causes other than those related to smoking were used as control group 1 and control group 2 respectively. Consistency in the results when comparing cases with each of the control groups was assessed. Results Consistency in the results was observed in the analyses using different control groups although .
