نتایج جستجو برای: additive hazards model

تعداد نتایج: 2184046  

2012
Patrick Breheny Woodrow Burchett

Regression models allow one to isolate the relationship between the outcome and an explanatory variable while the other variables are held constant. Here, we introduce an R package, visreg, for the convenient visualization of this relationship via short, simple function calls. In addition to estimates of this relationship, the package also provides pointwise confidence bands and partial residua...

Journal: :iranian red crescent medical journal 0
abbas rahimi foroushani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, ir iran mahmoud salesi nephrology and urology research center, baqiyatallah university of medical sciences, tehran, ir iran zohreh rostami nephrology and urology research center, baqiyatallah university of medical sciences, tehran, ir iran ali reza mehrazmay behaviolar sciences research center, baqiyatallah university of medical sciences, tehran, ir iran jamile mohammadi department of psychology, faculty of humanities, tarbiat modares university, tehran, ir iran behzad einollahi nephrology and urology research center, baqiyatallah university of medical sciences, tehran, ir iran

conclusions by controlling the modifiable risk factors and modality of treatment in our study, physicians can reach more effective treatment. results at the end of the study, long-term graft failure was seen in 27 (10.2%) cases. one-year and 2-year graft survival after diagnosis of cancer were 93.6% and 91.7%, respectively. the univariate analysis showed that the incidence of chronic graft loss...

Journal: :Electronic Journal of Statistics 2012

Journal: :مجله تحقیقات سلامت 0
زهره سادات پورتقی zohre sadat pourtaghi فرهاد نژادکوکی farhad nejadkoorki محسن اسدی لاری mohsen asadi- lari اسماعیل خدمتی esmaeil khedmati morasae زهرا نصرالهی zahra nasrollahi

introduction: inequalities in urban environment are a significant concern. socioeconomic level plays an important role in these inequalities. inequality in environmental hazards is recognized as potential determinants of health disparities. materials & methods: in this study, we used individual and cumulative environmental hazard inequality indices to compare the inequality among 379 neighborho...

Journal: :iranian red crescent medical journal 0
zohreh amiri department of basic sciences, national nutrition and food technology research institute, faculty of nutrition sciences and food technology, shahid beheshti university of medical sciences, ir iran kazem mohammad department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, ir iran +98-2188989126, [email protected] mahmood mahmoudi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, ir iran +98-2188989126, [email protected] mahbubeh parsaeian department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, ir iran +98-2188989126, [email protected]

results survival probabilities at different times were determined using the cox proportional hazards and a neural network with three nodes in the hidden layer; the ratios of standard errors with these two methods to the kaplan-meier method were 1.1593 and 1.0071, respectively, revealed a significant difference between cox and kaplan-meier (p < 0.05) and no significant difference between cox and...

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