Characteristics of 306 cases and 605 controls in the Golestan Gastric Cancer Case-Control Study.

Note: H. pylori infection data missing for 78 controls and 27 cases.*P-values from Student’s t test (continuous variables) or Pearson’s chi squared test (categorical variables).# Matching variablesCharacteristics of 306 cases and 605 controls in the Golestan Gastric Cancer Case-Control Study.

注：78名对照个体与27名病例的幽门螺杆菌(Helicobacter pylori)感染数据缺失。
* 统计P值采用Student t检验（针对连续变量）或Pearson卡方检验（针对分类变量）计算。
# 匹配变量
古利斯坦胃癌病例对照研究中306例病例与605例对照的特征信息。