TABLE 5.
Variation in PPV of BMI to identify adiposity classified by FMI or %BF ≥75th percentile by population ancestry group in NHANES participants aged 8–19 y1
| PPV of overweight and obese by BMI to identify adiposity as defined by FMI >75th percentile |
PPV of overweight and obese by BMI to identify adiposity as defined by %BF >75th percentile |
|||
| Overweight by BMI | Obese by BMI | Overweight by BMI | Obese by BMI | |
| Males | 62.1 (54.9, 68.8) | 98.0 (95.8, 99.1) | 41.9 (37.1, 46.9) | 86.9 (84.1, 89.2) |
| Non-Hispanic white | 65.4 (55.7, 74.0) | 98.1 (93.7, 99.4) | 44.7 (38.3, 51.2) | 87.4 (82.3, 91.2) |
| Non-Hispanic black | 35.9 (28.7, 43.8)2 | 96.9 (95.3, 98.0) | 21.3 (15.0, 29.4)2 | 79.2 (72.8, 84.5) |
| Mexican American | 73.3 (66.5, 79.1) | 99.0 (97.3, 99.6) | 49.7 (43.6, 55.8) | 92.6 (90.3, 94.4) |
| Females | 50.6 (43.5, 57.6) | 99.7 (98.5, 99.9) | 41.2 (35.7, 46.9) | 89.2 (84.0, 92.3) |
| Non-Hispanic white | 52.2 (43.0, 61.3) | 100.0 | 43.8 (36.1, 51.8) | 93.0 (86.3, 96.5) |
| Non-Hispanic black | 30.3 (23.4, 38.3)3 | 98.7 (94.0, 99.7) | 19.2 (14.8, 24.5)2 | 79.0 (72.1, 84.5) |
| Mexican American | 68.3 (61.1, 74.7) | 100.0 | 55.7 (47.0, 64.1) | 90.4 (82.3, 95.0) |
1
Values are PPVs; 95% CIs in parentheses. n = 7095. Chi-square analyses were used to determine significance. PPV is the prevalence of high adiposity (as defined by FMI or %BF) in a given BMI classification. FMI, fat mass index; PPV, positive predictive value; %BF, percentage body fat.
2
Significantly different from non-Hispanic whites and Mexican Americans, P < 0.0001.
3
Significantly different from non-Hispanic whites and Mexican-Americans, P < 0.001.