Dataset = COVID-19 patient in Adam Malik Hospital
- Y = time survival
- X1 = age
- X2 = vitamin
- X3 = Levofloxacin Antibiotics
- X4 = censored status
The best model formed in proportional hazard cox regression uses the Efron method with backward elimination
Summary = Patients who were given vitamins had a hazard ratio of 0.6735 times faster to be hospitalized and recovered than patients who were not given vitamins.