TABLE 2

Longitudinal Correlations Between the Initial and Final Levels of the BMI Metrics Among 15 428 Pairs of Examinations

BMI Metric
NBMIBMIzBMIaz%BMIp95
All childrenOverall14 1470.860.890.890.88
Obesitya9090.720.610.730.70
Severe2470.640.460.650.61
<10 yOverall74480.830.870.870.87
Obesity4660.690.580.720.70
Severe1140.660.360.600.57
≥10 yOverall66990.890.900.910.91
Obesity4430.700.640.730.72
Severe1330.580.560.670.64
  • Values represent the correlation between consecutive levels of each BMI metric between ages 5 and 17.9 y. For children who were examined more than 2 times, each pair of adjacent examinations contributed to the analysis.

  • a Obesity is classified as a %BMIp95 ≥100. Of the 1156 children with obesity, 909 had moderate obesity (%BMIp95 of 100–119) and 247 had severe obesity (%BMIp95 ≥120).