Table 3.

Model output after stepwise reduction. The dependent variable was the relative change in serum creatinine defined as postoperative creatinine/preoperative creatinine

	Estimate	Std. error	P value
Age	0.003509	0.001502	0.0198*
BMI	0.004841	0.002954	0.1018
Diabetes mellitus	−0.076695	0.046419	0.0990
Hypertension	0.043715	0.02879	0.1285
General anesthesia	0.072565	0.027415	0.0083*
Dicloxacillin	0.157739	0.046075	0.0007*
Baseline systolic BP	−0.003150	0.000755	0.0001*
Baseline diastolic BP	0.004641	0.001362	0.0007*
Diagnosis fracture	0.136877	0.051407	0.0079*