Figure 2.
Prevalence of BMI ≥99th Percentile Among U.S. Children Ages 2–19 Years, NHANES II (1976–1980), NHANES III (1998-1994) and NHANES 1999–2004, by gender
a p<0.001 for trends from NHANES II to NHANES III to NHANES 1999–2004
b p<0.001 comparing NHANES II to NHANES 1999–2004
c p=0.04 comparing NHANES III to NHANES 1999–2004
d p ≤ 0.003 comparing NHANES II to NHANES III
* Estimates for NHANES II females based on sample size <30 or relative standard error >30% and may be unreliable
