Rank

Cox-PH

Nonlinear Statistical Model

1

blood urea nitrogen (BUN)

Bence Jone protein in urine, X₁₃

2

White Blood Cells (WBC)

Blood Urea Nitrogen (BUN), X₁

3

Bence Jone protein in the urine

Infections, X₄

4

Fractures

% Myeloid cells in peripheral blood, X₁₁

5

Infections & serum calcium

serum calcium, ${X^{\prime }}_{16}$

6

Proteinuria

Fractures, X₈

7

Gender

WBC & total Serum protein, $X_7\cdot {X^{\prime }}_{14}$

8

Platelets

Gender, X₆

9

Platelets, X₃

10

Age, X₅