TABLE 2.
Baseline Characteristics of Study Participants
| Characteristic | Intervention (n = 105) | Usual Care (n = 103) | Test Statistic | P |
|---|---|---|---|---|
| Anthropometric measures | ||||
| Weight, mean ± SD, lb | 189.68 ± 33.47 | 186.4 3 ± 34.39 | t = 0.69 | .492 |
| BMI, mean ± SD, kg/m2 | 32.03 ± 4.79 | 31.84 ± 4.63 | t = 0.29 | .771 |
| BMI percentile, mean ± SD | 97.09 ± 2.27 | 97.10 ± 2.29 | t = −0.03 | .977 |
| Obese (≥95th percentile BMI), n (%) | 88 (83.81) | 87 (84.47) | χ2 = 0.02 | .897 |
| Severely obese (≥97th percentile BMI), n (%) | 65 (61.90) | 70 (67.96) | χ2 = 0.84 | .360 |
| Demographic | ||||
| Age, mean ± SD, y | 14.12 ± 1.48 | 14.03 ± 1.50 | t = 0.46 | .647 |
| Grade in school, n (%) | χ2 = 0.00 | .948 | ||
| 6th–8th | 55 (52.88) | 54 (52.43) | ||
| 9th–12th | 49 (47.12) | 49 (47.57) | ||
| Race/% white, n (%) | 75 (71.43) | 75 (72.82) | χ2 = 0.05 | .824 |
| Family income >$75 000, n (%) | 40 (40.0) | 35 (36.46) | χ2 = 0.26 | .610 |
| Menarche (% yes), n (%) | 93 (88.57) | 86 (85.15) | χ2 = 0.53 | .467 |
| Psychosocial functioning | ||||
| Disordered eating (QEWP-A), n (%) | 13 (12.38) | 13 (12.62) | χ2 = 0.01 | .937 |
| Mood disorder (PHQ-A), n (%) | 10 (9.52) | 12 (11.65) | χ2 = 0.27 | .601 |
| Quality of life (PedsQL), mean ± SD | 71.11 ± 16.22 | 68.81 ± 16.55 | t = −1.02 | .311 |
| Health behaviors | ||||
| Screen time, mean ± SD, h/wk | 30.54 ± 14.91 | 32.23 ± 15.43 | t = −0.80 | .423 |
| Physical activity recall, mean ± SD, min/day | 55.35 ± 51.81 | 49.68 ± 39.47 | t = −0.88 | .379 |
| METa/day, mean ± SD | 4.28 ± 3.97 | 3.80 ± 3.13 | t = 0.97 | .334 |
| Team sports participation, n (%) | 33 (31.73) | 33 (32.35) | χ2 = 0.01 | .924 |
| Eat breakfast, mean ± SD, days/wk | 4.86 ± 2.47 | 4.17 ± 2.60 | t = 1.97 | .051 |
| Family meals, mean ± SD, times/wk | 3.85 ± 2.55 | 4.34 ± 2.51 | t = −1.42 | .158 |
| Fast-food, mean ± SD, times/wk | 1.17 ± 1.06 | 1.27 ± 1.12 | t = −0.69 | .489 |
| Total kilocalories per day (24-h dietary recall), mean ± SD | 1601.36 ± 452.73 | 1583.95 ± 502.92 | t = 0.26 | .795 |
| % of calories from fat (24-h dietary recall), n (%) | NA (32.53) | NA (32.78) | χ2 = −0.27 | .790 |
| Self-reported dieting in previous 6 mo, n (%) | 93 (88.57) | 83 (81.37) | χ2 = 2.04 | .147 |
| Use of professional weight management services during previous 6 mo, n (%) | 37 (35.24) | 20 (19.42) | χ2 = 6.54 | .011 |
Data are presented as mean ± SD unless otherwise indicated. MET, metabolic equivalent; NA, not applicable.
a
MET is equivalent to a metabolic rate consuming 1 calorie per kilogram of body weight per hour (http://www.sizes.com/units/metequiv.htm).