Table 3.

Annual rate of change in BMI (kg/m2) in various clinical strata

StratumEstimate Slopea95% Confidence IntervalP Value SlopeP Value Interaction Term
Age<66.8 yr0.03−0.08 to 0.130.59Age×time
Age≥66.8 yr−0.35−0.47 to −0.23<0.001<0.001
Men−0.20−0.30 to −0.11<0.001Sex×time
Women−0.07−0.21 to 0.070.300.11
DM−0.24−0.43 to −0.060.01DM×time
No DM−0.12−0.21 to −0.040.0040.21
CVD−0.31−0.43 to −0.19<0.001CVD×time
No CVD−0.04−0.14 to 0.070.48<0.001
RKF−0.22−0.33 to −0.120.23RKF×time
No RKF−0.07−0.19 to 0.05<0.0010.07
Vintage below median−0.09−0.20 to 0.030.14Vintage×time
Vintage at and above median−0.23−0.34 to −0.12<0.0010.60
  • All analyses on strata were adjusted for age, sex, dialysis vintage and randomized group (excluding the conventional risk factor of the stratum under study), and presence of DM, CVD, and RKF. Estimates in this table may differ slightly from estimates in the text of the Results, because estimates in this table are derived from models performed in the subgroups separately. BMI, body mass index.

  • a Estimate slope indicates mean longitudinal change per year in BMI associated with the presence or absence of the conventional risk factor.