Table 1.
Patient characteristics by measured BMI percentile for 2,993 adolescents, Mayo Clinic 2007
| <85th percentile (not overweight) (N=2,106) | 85th to <95th percentile (overweight) (N=496) | 95th percentile + (obese) (N=391) | Total (N=2,993) | P-value | |
|---|---|---|---|---|---|
| Age, mean (SD) | 15.0 (1.83) | 15.0 (1.78) | 14.8 (1.82) | 15.0 (1.82) | 0.14a |
| Sex | <0.0001b | ||||
| F | 1,186 (56.3%) | 267 (53.8%) | 158 (40.4%) | 1,611 (53.8%) | |
| M | 920 (43.7%) | 229 (46.2%) | 233 (59.6%) | 1,382 (46.2%) | |
| Ethnicity/race | 0.85b | ||||
| Other/unknown | 436 (20.7%) | 97 (19.6%) | 80 (20.5%) | 613 (20.5%) | |
| Non-Hispanic white | 1,670 (79.3%) | 399 (80.4%) | 311 (79.5%) | 2,380 (79.5%) | |
| Who filled out the form | 0.31b | ||||
| Patient | 507 (30.1%) | 113 (29.1%) | 83 (25.9%) | 703 (29.4%) | |
| Proxy | 1,179 (69.9%) | 275 (70.9%) | 238 (74.1%) | 1,692 (70.6%) | |
| Self-reported weight | <0.0001b | ||||
| Very/somewhat underweight/about the right weight | 1,871 (92.9%) | 278 (59.3%) | 54 (14.5%) | 2,203 (77.1%) | |
| Somewhat overweight | 139 (6.9%) | 185 (39.4%) | 255 (68.4%) | 579 (20.3%) | |
| Very overweight | 5 (0.2%) | 6 (1.3%) | 64 (17.2%) | 75 (2.6%) | |
| Which of the following is the patient trying to do about his/her weight? | <0.0001b | ||||
| Not trying to do anything | 1,179 (59.6%) | 208 (44.3%) | 100 (27.3%) | 1,487 (52.9%) | |
| Gain weight | 173 (8.7%) | 16 (3.4%) | 2 (0.5%) | 191 (6.8%) | |
| Lose weight | 189 (9.6%) | 163 (34.8%) | 224 (61.2%) | 576 (20.5%) | |
| Stay the same weight | 437 (22.1%) | 82 (17.5%) | 40 (10.9%) | 559 (19.9%) | |
| 60-min physical activity score (0=0; 7=7+ days/week) | <0.0001c | ||||
| N | 2,019 | 474 | 367 | 2,860 | |
| Mean (SD) | 4.9 (1.85) | 4.5 (2.02) | 4.0 (2.07) | 4.7 (1.93) | |
| Median | 5.0 | 5.0 | 4.0 | 5.0 | |
| Q1, Q3 | 4.0, 7.0 | 3.0, 6.0 | 3.0, 5.0 | 3.0, 6.0 | |
| TV/computer/video games score (0=0 hours/day; 4= more than 10 hours/day) | <0.0001c | ||||
| N | 2,023 | 476 | 377 | 2,876 | |
| Mean (SD) | 1.3 (0.64) | 1.4 (0.62) | 1.7 (0.75) | 1.4 (0.67) | |
| Median | 1.0 | 1.0 | 2.0 | 1.0 | |
| Q1, Q3 | 1.0, 2.0 | 1.0, 2.0 | 1.0, 2.0 | 1.0, 2.0 | |
| Servings fruit/vegetables per day score (0=0 servings/day; 5=5+ servings/day) | 0.003c | ||||
| N | 2,010 | 477 | 373 | 2,860 | |
| Mean (SD) | 2.5 (1.15) | 2.5 (1.13) | 2.3 (1.11) | 2.5 (1.14) | |
| Median | 2.0 | 2.0 | 2.0 | 2.0 | |
| Q1, Q3 | 2.0, 3.0 | 2.0, 3.0 | 1.0, 3.0 | 2.0, 3.0 | |
| Chips/French fries score (0=0 times/day; 3=3+ times/day) | 0.39c | ||||
| N | 1,978 | 466 | 362 | 2,806 | |
| Mean (SD) | 0.7 (0.69) | 0.7 (0.70) | 0.8 (0.66) | 0.7 (0.69) | |
| Median | 1.0 | 1.0 | 1.0 | 1.0 | |
| Q1, Q3 | 0.0, 1.0 | 0.0, 1.0 | 0.0, 1.0 | 0.0, 1.0 | |
| Sweetened drinks/pop score (0=0 times/day; 3=3+ times/day) | 0.02c | ||||
| N | 2,022 | 478 | 375 | 2,875 | |
| Mean (SD) | 0.8 (0.86) | 0.9 (0.93) | 0.9 (0.92) | 0.8 (0.88) | |
| Median | 1.0 | 1.0 | 1.0 | 1.0 | |
| Q1, Q3 | 0.0, 1.0 | 0.0, 1.0 | 0.0, 1.0 | 0.0, 1.0 | |
| Fast food score (0=0 times/week; 7=7+ times/week) | 0.15c | ||||
| N | 2,023 | 466 | 371 | 2,860 | |
| Mean (SD) | 1.2 (1.05) | 1.2 (0.99) | 1.3 (1.06) | 1.2 (1.04) | |
| Median | 1.0 | 1.0 | 1.0 | 1.0 | |
| Q1, Q3 | 1.0, 2.0 | 1.0, 2.0 | 1.0, 2.0 | 1.0, 2.0 |
Notes: Number with missing data varies from item to item.
a
ANOVA;
b
chi-square test;
c
Kruskal–Wallis.
Abbreviations: ANOVA, analysis of variance; BMI, body mass index; F, female; M, male; min, minutes; SD, standard deviation; Q1, quartile 1; Q3, quartile 3; TV, television.