Table 2

Net changes in BMI-years at end of follow-up by race and age-group*

Age-group at baseline
≥30 and <45 years old≥45 and <60 years old
Median25th percentile75th percentileMedian25th percentile75th percentile
Blacksn = 1,359n = 2,297
 Net gain of >1 BMI-years at end of follow-up
  n (%)976 (71.8)1,366 (59.5)
  BMI-years/follow-up time1.580.862.621.090.611.81
 Net stable (±1) BMI-years at end of follow-up
  n (%)108 (7.9)389 (16.9)
  BMI-years/follow-up time0.01−0.050.070.00−0.100.11
 Net loss of >1 BMI-years at end of follow-up
  n (%)275 (20.2)542 (23.6)
  BMI-years/follow-up time−0.80−1.59−0.44−0.69−1.20−0.40
Whitesn = 3,266n = 10,482
 Net gain of >1 BMI-years at end of follow-up
  n (%)2,478 (75.9)6,995 (66.7)
  BMI-years/follow-up time1.270.692.131.050.581.77
 Net stable (±1) BMI-years at end of follow-up
  n (%)203 (6.2)1,222 (11.7)
  BMI-years/follow-up time0.03−0.040.070.02−0.050.09
 Net loss of >1 BMI-years at end of follow-up
  n (%)585 (17.9)2,265 (21.6)
  BMI-years/follow-up time−0.64−1.18−0.33−0.64−1.10−0.35
  • *Results stratified by net gain in BMI (cumulative BMI-years >1), no net change in BMI (cumulative BMI-years ±1), and net loss in BMI (cumulative BMI-years less than −1).

  • †BMI-years/follow-up time: cumulative area calculated based on time to each recorded examination (x-axis) and connected BMI measurements (y-axis) divided by the total amount of follow-up time in years.