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Table 4 Sensitivity analysis: the association between BMI at age 21 and end-stage renal disease in the southern community cohort study adjusting for diabetes and hypertension and stratified by race

From: Increased body mass index may be associated with greater risk of end-stage renal disease in whites compared to blacks: a nested case–control study

  Overall Whites Black
  Cases Controls ORa 95 % CI Cases Controls ORa 95 % CI Cases Controls ORa 95 % CI
  N = 589 N = 1816 N = 64 N = 193    N = 525 N = 1623   
BMI Category         
Underweight 53 213 0.92 0.63, 1.33 2 29 0.20 0.02, 1.73 51 184 1.01 0.68, 1.48
Normal 291 1100 1.00 (referent) N/A 28 117 1.00 (referent) N/A 263 983 1.00 (referent) N/A
Overweight 131 356 1.16 0.89, 1.52 14 33 1.21 0.47, 3.17 117 323 1.18 0.89, 1.57
Obese 114 147 1.82 1.32, 2.51 20 14 2.81 0.99, 8.02 94 133 1.71 1.22, 2.41
  1. Abbreviations: BMI Body Mass Index, CI Confidence Interval, OR odds ratio, N/A not applicable
  2. aAdjusted for education (<high school, completed high school, vocational training or junior college and ≥ college degree), smoking history (never, former and current), diabetes and hypertension. Age, gender and race were matching factors in the conditional logistic models