Table C.
Body mass variables at age 18, by race and by timing of puberty
| Timing | Race | N | BMI Mean (std) | %BF Mean (std) | FFMI Mean (std) | FMI Mean (std) | FAT to FF Mean (std) | W to Ht Mean (std) |
|---|---|---|---|---|---|---|---|---|
| Early | W | 100 | 25.21 (6.629) |
30.90 (11.406) |
16.63 (1.553) |
8.40 (5.799) |
0.50 (0.349) |
0.46 (0.078) |
| On-time | W | 318 | 23.58 (4.929) |
28.48 (9.744) |
16.41 (1.539) |
7.13 (4.357) |
0.44 (0.312) |
0.45 (0.063) |
| Late | W | 103 | 22.03 (4.431) |
25.24 (8.122) |
16.05 (1.412) |
5.79 (3.230) |
0.36 (0.186) |
0.42 (0.053) |
| Early | B | 92 | 28.24 (7.747) |
35.99 (14.502) |
17.04 (1.917) |
11.19 (7.375) |
0.67 (0.487) |
0.50 (0.089) |
| On-time | B | 274 | 26.32 (7.081) |
31.82 (13.206) |
16.97 (1.901) |
9.19 (6.645) |
0.57 (0.732) |
0.47 (0.085) |
| Late | B | 91 | 25.10 (6.593) |
30.20 (13.117) |
16.77 (1.742) |
8.22 (5.914) |
0.49 (0.374) |
0.47 (0.082) |
*
P-value of Kruskal-Wallis test for all comparisons among three BMI groups are <0.0001 for all variables.
W = white; B = black; %BF = percent body fat; FFMI = fat-free mass index; FMI = fat mass index; FAT to FF = fat mass to fat-free mass ratio; W to Ht = waist to height ratio; std = standard deviation