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Table 2 Linear regression showing association between body mass index and pre-operative prostate volume

From: Correlation between body mass index and prostate volume in benign prostatic hyperplasia patients undergoing holmium enucleation of the prostate surgery

  Unadjusted Adjusted model 1 Adjusted model 2 P
β P β P β
Age at surgery 0.002 0.19    0.003 0.13
BMI 0.009 0.006 0.010 0.004 0.010 0.002
Race/ethnicity       
 HAs versus EAs 0.031 0.38    0.030 0.39
 Others versus EAs − 0.043 0.42    − 0.054 0.16
Smoking       
 Non-smokers versus former smokers 0.034 0.32     
 Non-smokers versus current smoker − 0.141 0.03     
Diabetes 0.051 0.17 0.066 0.099 0.054 0.16
Hyperlipidemia − 0.047 0.13 − 0.080 0.02 − 0.074 0.02
Hypertension 0.001 0.98     
UTI 0.008 0.84     
Bladder stone 0.051 0.29     
  1. Note Adjusted model 1 is based on backward selection, and BMI, diabetes, and hyperlipidemia were retained in the final mode. Additionally adjusted for age at surgery and race/ethnicity in model 2. Bold values indicate statistically significant (P < 0.05)
  2. BMI body mass index, EA European Americans, HA Hispanic Americans, UTI urinary tract infection