Pourhoseingholi Asma, Pourhoseingholi Mohamad Amin, Vahedi Mohsen, Safaee Azadeh, Moghimi-Dehkordi Bijan, Ghafarnejad Fatemeh, Zali Mohammad Reza
Research Center of Gastroenterology and Liver Diseases, Shahid Beheshti University, (MC), Tehran, Iran.
Asian Pac J Cancer Prev. 2008 Oct-Dec;9(4):753-5.
Approximately 50,000 new cases of cancer occur each year in the Iranian population of 70.4 million. The organ system involved with more than 38% of all cancers is the gastrointestinal (GI) tract. The objective of this study was to investigate the relation between demographic factors and type of gastrointestinal cancer using probit and logit models.
This study was designed as a cross-sectional survey including all consecutive GI cancer patients admitted over a one year period in a randomly selected hospital group located in Tehran in 2006.
The largest number of cases were colorectal cancers (40.0%), followed by gastric cancers (34.5%) and esophagus cancers (17.1%). There was a significant gender effect in the colorectal, gastric and esophagus cancer also there was a significant association between age and gastrointestinal cancers in both logit and probit regression. The factor of duration was not significant in gastric cancer.
Men are more likely have colorectal cancer than women. Older people are more likely to have gastric cancer than younger people. For esophagus cancer all factors were significant. Results from probit and logit models were similar, indicating that probit analysis can be employed as a logit model to analyze relationships between demographic factors and cancer type.
在伊朗7040万人口中，每年约有5万例新发癌症病例。所有癌症中超过38%累及的器官系统是胃肠道。本研究的目的是使用概率单位模型和逻辑回归模型研究人口统计学因素与胃肠道癌症类型之间的关系。
本研究设计为一项横断面调查，纳入了2006年在德黑兰随机选择的一组医院中连续一年收治的所有胃肠道癌症患者。
病例数最多的是结直肠癌（40.0%），其次是胃癌（34.5%）和食管癌（17.1%）。在结直肠癌、胃癌和食管癌中存在显著的性别差异，在逻辑回归和概率单位回归中年龄与胃肠道癌症之间也存在显著关联。病程因素在胃癌中不显著。
男性患结直肠癌的可能性高于女性。老年人患胃癌的可能性高于年轻人。对于食管癌，所有因素均显著。概率单位模型和逻辑回归模型的结果相似，表明概率单位分析可作为逻辑回归模型用于分析人口统计学因素与癌症类型之间的关系。
