TABLE 1.
Socio-demographic characteristics of 1999 and 2010 nonoverweight (<85th percentile) and overweight (>85th percentile) adolescent study participants
| NonOverweight (<85th percentile) |
Overweight (>85th percentile) |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1999 (n = 1784) | 1999 Weighted (n = 1784) | 2010 (n = 1646) | 1999 (n = 896) | 1999 Weighted (n = 896) | 2010 (n = 1101) | |||||||||
| N | % | N | % | N | % | p valuesa | N | % | N | % | N | % | p valuesb | |
| Gender | 0.942 | 0.979 | ||||||||||||
| Male | 887 | 49.7 | 812 | 45.5 | 747 | 45.4 | 423 | 47.2 | 436 | 48.7 | 535 | 48.6 | ||
| Female | 897 | 50.3 | 972 | 54.5 | 899 | 54.6 | 473 | 52.8 | 460 | 51.3 | 566 | 51.4 | ||
| Ethnicity/race | 0.999c | 0.999c | ||||||||||||
| White | 626 | 35.1 | 400 | 22.4 | 366 | 22.2 | 298 | 33.3 | 128 | 14.3 | 155 | 14.1 | ||
| Black | 380 | 21.3 | 501 | 28.1 | 465 | 28.3 | 216 | 24.1 | 260 | 29.0 | 325 | 29.5 | ||
| Asian | 480 | 26.9 | 369 | 20.7 | 339 | 20.6 | 188 | 21.0 | 174 | 19.4 | 209 | 19.0 | ||
| Hispanic | 121 | 6.8 | 271 | 15.2 | 253 | 15.4 | 86 | 9.6 | 175 | 19.5 | 215 | 19.5 | ||
| Native American | 65 | 3.6 | 39 | 2.2 | 38 | 2.3 | 53 | 5.9 | 49 | 5.5 | 59 | 5.4 | ||
| Mixed/Other | 86 | 4.8 | 166 | 9.3 | 180 | 10.9 | 55 | 4.7 | 86 | 9.6 | 134 | 12.2 | ||
| Not reported | 26 | 1.5 | 36 | 2.0 | 5 | 0.3 | 13 | 1.5 | 25 | 2.8 | 4 | 0.4 | ||
| Socio-economic status | 0.999 | 0.999 | ||||||||||||
| Low | 373 | 20.9 | 633 | 35.5 | 586 | 35.6 | 212 | 23.7 | 375 | 41.9 | 472 | 42.9 | ||
| Low-middle | 326 | 18.3 | 373 | 20.9 | 346 | 21.0 | 194 | 21.7 | 195 | 21.8 | 235 | 21.3 | ||
| Middle | 441 | 24.7 | 308 | 17.3 | 282 | 17.1 | 233 | 26.0 | 149 | 16.7 | 182 | 16.5 | ||
| High-middle | 316 | 17.7 | 251 | 14.1 | 229 | 13.9 | 147 | 16.4 | 95 | 10.7 | 116 | 10.5 | ||
| High | 241 | 13.5 | 163 | 9.2 | 151 | 9.2 | 76 | 8.5 | 41 | 4.6 | 49 | 4.5 | ||
| Not reported | 87 | 4.9 | 56 | 3.2 | 52 | 3.2 | 34 | 3.8 | 40 | 4.4 | 47 | 4.3 | ||
| N | Mean (SD) | N | Mean (SD) | N | Mean (SD) | p values | N | Mean (SD) | N | Mean (SD) | N | Mean (SD) | p values | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age in years | 1784 | 14.7 (1.8) | 1784 | 14.6 (1.8) | 1646 | 14.5 (2.0) | 0.455 | 896 | 14.5 (1.8) | 896 | 14.3 (1.8) | 1101 | 14.3 (2.0) | 0.718 |
a
p-values are presented for differences between the weighted 1999 nonoverweight sample and the 2010 nonoverweight sample; based on χ2 tests for gender, ethnicity/race, and socio-economic status and t-tests for age.
b
p-values are presented for differences between the weighted 1999 overweight sample and the 2010 overweight sample (similar tests as above).
c
Test for race combines the “mixed/other” and “not reported” groups.