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Table 2 The association between BMI at age 21 and end-stage renal disease in the southern community cohort study, overall 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 Blacks
  Cases Controls ORa 95 % CI Cases Controls ORa 95 % CI Cases Controls ORa 95 % CI
  N = 589 N = 1819 N = 64 N = 193 N = 525 N = 1626
BMI Category         
Underweight 53 214 0.89 0.63, 1.25 2 29 0.19 0.02, 1.46 51 185 0.99 0.69, 1.41
Normal 291 1101 1.00 (referent) N/A 28 117 1.00 (referent) N/A 263 984 1.00 (referent) N/A
Overweight 131 357 1.44 1.13, 1.85 14 33 2.13 0.92, 4.93 117 324 1.41 1.09, 1.83
Obese 114 147 2.88 2.16, 3.83 20 14 7.46 2.90, 19.21 94 133 2.56 1.88, 3.47
  1. Abbreviations: BMI Body Mass Index, CI Confidence Interval, OR odds ratio, N/A not applicable
  2. P value for race × continuous BMI interaction term (test for additivity) in adjusted model = 0.05 (in the unadjusted model, the P value = 0.047)
  3. aAdjusted for education (<high school, completed high school, vocational training or junior college and ≥ college degree), and smoking history (never, former and current). Age, gender and race were matching factors in the conditional logistic models