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Table 3
Body mass index (BMI) trajectory group membership probabilities for girls and boys aged 24 to 35 months at baseline, Canada, 1996/1997 to 2002/2003

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Sex/BMI trajectory group Membership probability (%)
Girls 100
Group 1 (stable normal BMI) 64
Group 2 (early declining BMI) 8
Group 3 (late declining BMI) 14
Group 4 (accelerating rise to obesity) 14
Boys 100
Group 1 (stable normal BMI) 70
Group 2 (transient high BMI) 19
Group 3 (J-curve rise to obesity) 11
Source: National Longitudinal Survey of Children and Youth, 1996/1997 to 2002/2003