نتایج جستجو برای: pearson correlation coefficient and stepwise method
تعداد نتایج: 17078754 فیلتر نتایج به سال:
In order to evaluate and compare the predictive ability of the APACHE II (Acute Physiology and Chronic Health Evaluation II) and the SAPS (Simplified Acute Physiology Score) scoring systems in relation to outcome in a medical intensive care unit (ICU). The authors reviewed consecutive medical ICU admissions (n = 482) at a tertiary hospital over a 2-year period. For each patient, demographic dat...
BACKGROUND Internet addiction is a global phenomenon that causes serious problems in mental health and social communication. Students form a vulnerable group, since they have free, easy, and daily access to the internet. OBJECTIVES The current study aimed to investigate perceived social support, self-esteem, and internet addiction among Al-Zahra University students. MATERIALS AND METHODS In...
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
COX-2 inhibitory activities of some 1,4-dihydropyridine and 5-oxo-1,4,5,6,7,8-hexahydroquinoline derivatives were modeled by quantitative structure–activity relationship (QSAR) using stepwise-multiple linear regression (SW-MLR) method. The built model was robust and predictive with correlation coefficient (R2) of 0.972 and 0.531 for training and test groups, respectively. The quality of the mod...
COX-2 inhibitory activities of some 1,4-dihydropyridine and 5-oxo-1,4,5,6,7,8-hexahydroquinoline derivatives were modeled by quantitative structure–activity relationship (QSAR) using stepwise-multiple linear regression (SW-MLR) method. The built model was robust and predictive with correlation coefficient (R2) of 0.972 and 0.531 for training and test groups, respectively. The quality of the mod...
Abstract Introduction: Many nurses face to challenge of balancing their job and family roles.The purpose of this study was to Investigating the Role of Job engagement and Job Self-efficacy in predicting job-family conflict in female nurses. Methods: In this study that was descriptive–correlational, the statistical population was all female nurses of Tehran state hospitals in the second th...
Introduction: The present study has aimed to demonstrate the relationship between body image dissatisfaction and three variables of self-esteem as a psychological factor along with thin-ideal internalization and appearance-related social comparison as psychosocial factors. Methods: To conduct this study, 477 Tehran high-school students were recruited by a...
BACKGROUND This study's aim was to design and validate a semi-quantitative food frequency questionnaire (FFQ) for assessment of fruits and vegetables (FV) consumption in adults of Isfahan by comparing the FFQ with dietary reference method and blood plasma levels of beta-carotene, vitamin C, and retinol. METHODS This validation study was performed on 123 healthy adults of Isfahan. FV intake wa...
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