Nasser Behnampour, Ebrahim Hajizadeh, Shahriar Semnani, Farid Zayeri,
Volume 1, Issue 2 (10-2013)
Abstract
Background & objective:
One of the common purposes of medical research is Determination of effective factors on the occurrence of event. Due to the interaction of risk factors regression models, discriminant analysis and classification procedures used. Uses of these models require making the assumption which in the medical data isn’t usually established. Therefore, alternative methods must be used. According to diversification of risk factors for of esophageal cancer, the purpose of this article is the Introduction and application of classification and regression tree for determination of risk factor for esophageal cancer in Golestan province.
Methods:
Data of this article gathered from case-control study. Case group contain all confirmed cases of esophageal cancer that consist of 90 male and 60 female subjects in Golestan province during one year. Two control groups were considered for each case. Control groups were selected from family of patients and neighbors and matched for age, sex, ethnic and place of residence. Data was analyzed with classification and regression tree model and by using of R software. Gini criterion was used for selection of best splitting in each node and ROC surveyed accuracy of CRT model.
Results:
(ethnic factors) can be effective in esophageal cancer occurrences.
Results of Classification tree model showed that exposure to CT and X-ray dye (socio-environmental factors), unwashed hands after defecation, history of smoking (lifestyle factors) and family history of cancer
Conclusion:
models results` interpretation are two essential beneficiary of these models which can use in medical sciences.
Tree models don’t require the establishment of no default for making model and feasibility of tree
Imaneh Bagheri, Robabeh Memarian, Ebrahim Hajizadeh, Behrooz Pakcheshm,
Volume 2, Issue 1 (5-2014)
Abstract
Background & Objective: Myocardial infarction is one of the most common coronary artery diseases. One of the educational needs of patients, is how to perform sexual activities. Unfortunately, this issue is not being taught to patients, leading to problems in patients and their partners. This study was aimed to determine the effect of sex education on patients and their spouses› satisfaction after myocardial infarction.
Method: This Quasi-experimental, non-randomized study was performed on 60 patients with myocardial infarction and their spouses in the city of Yazd whom were divided into two groups of experimental and control (60 in each group),in the year 1392. The main method of this study was the education and preparation of nurses and then educating patients by trained nurses and to assess sexual satisfaction based on the standard Larson›s questionnaire. The data were then statistically analyzed using SPSS version 16 using paired, independent t-test.
Results: The average sexual satisfaction of patients in the experimental group before the intervention was 81.93 ± 12.47 and after the intervention 82.50 ± 12.57 While in the control group before the intervention the average satisfaction was 83.10 ± 17.36 and after 6 weeks 75.30 ± 15.42. Also the mean sexual satisfaction of partners in the test group before and after the intervention was 81.30 ± 12.47 and 82.07 ± 12.28 respectively. In the control group before the intervention, the average score was 82.50 ± 17.21 and after intervention it was 74.57 ± 15.30. There was significant difference between patients and spouses› sexual satisfaction scores in the experimental and control groups before and after the intervention (P=0.001).
Conclusion: Sex education increased the sexual satisfaction among the tested group. Therefore, it is suggested to include programs in order to prepare nurses in terms of sex education of patients and their spouses in cardiac intensive wards.
