The assistant lecturer at the College of Pharmacy, Rana Hassan Shamkhi, has published a paper entitled (Parametric Regression Analysis of the Relative Hazards Model with Current Case Data) in the Iranian Igna magazine and within the fourth quarter of Scopas classifications. The research included displaying the maximum sieving probability of each of the finite dimensional variables in the marginal relative risk model with the current bivariate position data.  And the use of the Coppola model to model the joint distribution of bivariate survival times. Simulation studies showed that the proposed estimates have good limited sample characteristics and can be applied in health fields to patients with two types of diseases.  The aim of the research is to study the relative hazards model with approved random variables using some Cobola models