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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 4.

Hazard ratio of time to biochemical recurrence after radical prostatectomy stratified by prostate-specific antigen nadir and body mass index

Cox proportional hazards HR 95% CI p trend
PSA nadir 0 (undetectable) (n = 591) 0.006*
 Overweight, BMI 25.0–29.9 kg/m2 1.23 0.57–2.65
 Obese, BMI ≥30 kg/m2 2.62 1.18–5.83
PSA nadir 0.01–0.09 (n = 336) 0.090*
 Overweight, BMI 25.0–29.9 kg/m2 1.48 0.82–2.67
 Obese, BMI ≥30 kg/m2 1.80 0.94–3.42
PSA nadir 0.10–0.19 (n = 43) 0.914*
 Overweight, BMI 25.0–29.9 kg/m2 0.43 0.09–2.20
 Obese, BMI ≥30 kg/m2 0.85 0.19–3.81

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.