Table 4.

Estimated ORs Between Overweight (Quetelet Index >95 P) and Adverse Risk Factor Levels Among 5- to 17-Year-Olds

Risk Factorn*
Screening Characteristics for OverweightORs (95% CI)ORs Based on Other Indices or Cutpoints
SensitivityPositive Predictive ValueOverallWhite BoysWhite GirlsBlack BoysBlack GirlsRohrer Index§Triceps Skinfold§Quetelet Index (85–94P)
TC >200 mg/dL74724%18%2.4  (2.0–3.0)3.62.21.72.32.52.32.1
TG >130 mg/dL50247%24%7.1  (5.8–8.6)7.06.59.38.76.25.12.9
LDLC >130 mg/dL65328%18%3.0  (2.4–3.6)4.42.42.82.42.92.52.4
HDLC <35 mg/dL70225%17%3.4  (2.8–4.2)3.83.24.02.73.12.61.9
High levels of
 Insulin27362%21%12.6  (10–16)15.827.77.56.611.78.62.1
 SBP37134%13%4.5  (3.6–5.8)7.14.53.03.04.53.42.2
 DBP39523%9%2.4  (1.8–3.0)3.13.41.11.62.92.61.2
  • * Number of children with risk factor. Of the 9167 5- to 17-year-olds, 1147 had a Quetelet index between the 85th P and 94th P, and have been excluded from all analyses. Of these 8020 schoolchildren, insulin levels were available for 5487 persons who were examined in the final four (of seven) examinations in Bogalusa.

  • Sensitivity is the proportion of children with risk factor who are also overweight. Positive predictive value is the proportion of overweight children who have adverse risk factor level. Specificities for all risk factors ranged from 88% to 90%.

  • ORs are based on the cross-tabulation of overweight and specified risk factors. An OR of 2.4 for TC indicates that among overweight children, the ratio of children with high TC levels to children with other TC levels is 2.4 times higher than the corresponding ratio among nonoverweight children. All ORs are have been adjusted for age and the seven examinations (six indicator variables) in logistic regression models; the overall ORs were also adjusted for race and sex.

  • § Schoolchildren with race-, sex-, and age-specific values ≥90th P were contrasted with values <80th P.

  • Schoolchildren with race-, sex-, and age-specific values between the 85th P and 94th P were contrasted with values <85th P. Children with a Quetelet index >95th P have been excluded from this comparison.