Afifi and Azen (1979) report data which were collected on 113 patients admitted to the emer- gency department at Los Angeles County Hospital with the diagnosis of shock, a potentially fatal condition. There are six different types of shock reported in the data set, each of which has a different cause. Measurements of some physiological variables were made at the time of admission. In addition, whether the patient died in hospital or survived is recorded. The following variables are in data file shock assn3 2018.sav:
Variable Description
death 0=survived, 1=died
shock shock type (2=non-shock, 3=hypovolemic shock, 4=cardiogenic shock, 5=bacterial shock, 6=neurogenic shock, 7=other)
age age in years
sex 1=male, 2=female
SBP Systolic Blood Pressure (mm Hg) MAP Mean Arterial Pressure (mm Hg)
We are interested in investigating how patients’ mortality depends on the covariates observed.
a.Investigate the data graphically and numerically, and comment on the relationships that you observe.Linear Models Assignment代写
b.Suppose we wish to explain the odds of death, in terms of the covariates. Using a model selection criterion, find the “best”
c.Foryour best model, give an interpretation of the effect of each of the covariates in your model, on the odds of death. Do these agree with your investigations in (a)?