Table 4.
Ability of BAI to Predict Fat% for the BLSA Study in Subpopulations
| BAI: Mean ± SD (n) | ||||||
|---|---|---|---|---|---|---|
| Fat% Groups (DXA) | Total Sample | Age ≥ 65 | Women | Men | Black | White |
| 0–10 | 23.0±2.3 (4) | 23.0±2.3 (4) | N/A (0) | 23.0±2.3 (4) | 26 (1) | 22.0±1.3 (3) |
| 10–15 | 24.8±2.8 (14) | 25.5±2.2 (12) | 28.7 (1) | 24.5±2.7 (13) | 22.0±3.1 (3) | 25.7±2.0 (8) |
| 15–20 | 23.0±2.4 (23) | 23.4±2.2 (16) | N/A (0) | 23.0±2.4 (23) | 22.5±1.8 (4) | 23.3±2.7 (16) |
| 20–25 | 24.8±2.5 (85) | 24.9±2.6 (65) | 25.3±2.2 (6) | 24.7±2.6 (79) | 24.7±2.6 (15) | 24.9±2.7 (54) |
| 25–30 | 25.7±3.1 (154) | 25.6±3.3 (112) | 26.8±3.2 (39) | 25.4±3.0 (115) | 25.3±2.7 (25) | 25.9±2.8 (100) |
| 30–35 | 28.0±3.6 (213) | 27.9±3.8 (143) | 28.7±4.0 (81) | 27.5±3.3 (132) | 28.0±4.7 (45) | 28.0±3.2 (144) |
| 35–40 | 29.3±4.1 (181) | 29.3±4.5 (127) | 29.9±3.8 (102) | 28.4±4.4 (79) | 29.6±2.9 (36) | 29.3±4.6 (117) |
| 40–45 | 32.9±4.3 (153) | 32.8±4.2 (95) | 33.0±4.1 (116) | 32.5±5.1 (37) | 33.8±4.0 (41) | 32.7±4.1 (98) |
| 45–50 | 37.8±4.0 (87) | 38.1±4.3 (43) | 37.7±3.9 (86) | 45.0 (1) | 38.3±3.6 (41) | 37.3±4.3 (44) |
| 50–55 | 40.9±5.4 (36) | 42.0±5.1 (21) | 40.9±5.4 (36) | N/A (0) | 41.4±4.2 (17) | 40.6±6.7 (17) |
Notes: Data are presented at the mean ± SD of BAI values and the “n” in parentheses; n: the number of participants of each sub-population that falls in each fat% range group. BAI = body adiposity index; BLSA = Baltimore Longitudinal Study of Aging; DXA = dual energy X-ray absorptiometry; Fat% = body fat percentage.