Table 2

Summary of the full and reduced multivariable logistic regression model.

Variables

Degree of Freedom

Type*

P value

Full model including all of the following variables (P = 0.04)

Femoral fixation type

1

C

0.7

Femoral Component Size

1

N

0.5

Primary DX

1

C

0.95

Sex

1

C

0.27

Age

1

N

0.67

T-score

2**

C

0.002

BMI

1

N

0.02

Reduced model only including significant variables (P = 0.002)

T-score

2**

C

0.002

BMI

1

N

0.02

* C = Category; N = Numerical

** Grouped with T≥0, 0 > T > -1.5, and T≤ -1.5

Gross and Liu Journal of Orthopaedic Surgery and Research 2012 7:1   doi:10.1186/1749-799X-7-1