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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Eur Urol. 2012 Aug 20;62(5):910–916. doi: 10.1016/j.eururo.2012.08.015

Table 3.

Multivariable models of time to biochemical recurrence after radical prostatectomy by body mass index relative to normal weight

Cox proportional hazards HR 95% CI p trend
Multivariable model not including PSA nadir 0.007*
 Normal weight (BMI ≤25 kg/m2) 1.00 –
 Overweight (BMI 25.0–29.9 kg/m2) 1.21 0.81–1.79
 Obese (BMI ≥30 kg/m2) 1.73 1.12–2.66
Multivariable model including PSA nadir 0.043*
 Overweight (BMI 25.0–29.9 kg/m2) 1.10 0.74–1.64
 Obese (BMI ≥30 kg/m2) 1.49 0.97–2.30

HR = hazard ratio; CI = confidence interval; BMI = body mass index; PSA = prostate-specific antigen.

All analyses adjust for age, race, PSA, surgical center, year of surgery, pathologic prostatic weight, Gleason sum, margin status, extraprostatic extension, and seminal vesicle invasion.

*

p trend calculated using median BMI of each category as a continuous variable.