Abstract
BackgroundAlthough gastric cancer is a malignancy with high morbidity and mortality in China, the survival rate of patients with early gastric cancer (EGC) is high after surgical resection. To strengthen diagnosing and screening is the key to improve the survival and life quality of patients with EGC. This study applied data mining methods to improve screening for the risk of EGC on the basis of noninvasive factors, and displayed important influence factors for the risk of EGC.MethodsThe dataset was derived from a project of the First Hospital Affiliated Guangdong Pharmaceutical University. A series of questionnaire surveys, serological examinations and endoscopy plus pathology biopsy were conducted in 618 patients with gastric diseases. Their risk of EGC was categorized into low and high risk of EGC by the results of endoscopy plus pathology biopsy. The synthetic minority oversampling technique (SMOTE) was used to solve imbalance categories of the risk of EGC. Four classification models of the risk of EGC was established, including logistic regression (LR) and three data mining algorithms.ResultsThe three data mining models had higher accuracy than the LR model. Gain curves of the three data mining models were convexes more closer to ideal curves by contrast with that of the LR model. AUC of the three data mining models were larger than that of the LR model as well. The three data mining models predicted the risk of EGC more effectively in comparison with the LR model. Moreover, this study found 16 important influence factors for the risk of EGC, such as occupations, helicobacter pylori infection, drinking hot water and so on.ConclusionsThe three data mining models have optimal predictive behaviors over the LR model, therefore can effectively evaluate the risk of EGC and assist clinicians in improving the diagnosis and screening of EGC. Sixteen important influence factors for the risk of EGC were illustrated, which may helpfully assess gastric carcinogenesis, and remind to early prevention and early detection of gastric cancer. This study may also be conducive to clinical researchers in selecting and conducting the optimal predictive models.
Highlights
Gastric cancer is a malignancy with high morbidity and mortality in China, the survival rate of patients with early gastric cancer (EGC) is high after surgical resection
This study may be conducive to clinical researchers in selecting and conducting the optimal predictive models
The participants filled out a questionnaire, including nine demographic characteristics, 11 eating habits, 14 main symptoms during the nearly 3 months and nine family or previous diseases histories. Their results of 5 serological examinations and endoscopy plus pathology biopsy were recorded, the latter is the gold standard in the screening of EGC
Summary
Gastric cancer is a malignancy with high morbidity and mortality in China, the survival rate of patients with early gastric cancer (EGC) is high after surgical resection. To strengthen diagnosing and screening is the key to improve the survival and life quality of patients with EGC. In China, the incidence and mortality of gastric cancer is much higher than that of developed and other developing countries, and gastric cancer will be the primary reason of malignant tumors deaths by 2020 [2,3,4]. Surgical resection is considered to be the radical treatment of early gastric cancer (EGC), and the postoperative 5-year survival rate of EGC should be 90%. When the patients have obvious symptoms, most of them have developed into advanced gastric cancer; the patients with advanced gastric cancer receive treatment, the 5-year survival rate of them decreases to only 30–40% [5]
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