Table 4. Comparison of participants in the self-reported/actual analytic sample vs participants in nonanalytic sample as a result of incomplete self-reported weight/height data (N = 1509).
| Characteristicsa | Analytic sample (n = 1243) |
In nonanalytic sample (n = 266) |
A | P |
|---|---|---|---|---|
| Age, y, mean (SD) | 14.85 (0.8) | 14.86 (0.8) | 0.870 | |
| Sex, n (%) | 0.671 | |||
| Female | 616 (49.6) | 128 (48.1) | ||
| Male | 627 (50.4) | 138 (51.9) | ||
| Grade, n (%) | 0.133 | |||
| 9th | 1089 (89.6) | 220 (88.7) | ||
| 10th | 79 (6.5) | 15 (6.1) | ||
| 11th | 32 (2.6) | 5 (2.0) | ||
| 12th | 15 (1.2) | 8 (3.2) | ||
| Race/ethnicity, n (%) | 0.233 | |||
| American Indian or Alaska Native | 13 (1.1) | 1 (0.4) | ||
| Asian | 4 (0.3) | 0 (0.0) | ||
| Black or African American | 10 (0.8) | 1 (0.4) | ||
| Hispanic or Latino | 30 (2.5) | 9 (3.6) | ||
| Native Hawaiian or Other Pacific Islander | 1 (0.9) | 0 (0.0) | ||
| White non-Hispanic or non–African American | 1135 (93.7) | 229 (92.0) | ||
| Other | 19 (1.6) | 9 (3.6) | ||
| Highest level of education: mother, n (%) | 0.531 | |||
| Less than high school | 70 (5.9) | 16 (6.6) | ||
| High school graduate or GED | 346 (29.2) | 70 (28.8) | ||
| Some college | 260 (21.9) | 48 (19.8) | ||
| College degree | 326 (27.5) | 61 (25.1) | ||
| Unknown | 185 (15.6) | 48 (19.8) | ||
| Highest level of education: father, n (%) | 0.304 | |||
| Less than high school | 101 (8.5) | 20 (8.4) | ||
| High school graduate or GED | 389 (32.8) | 85 (35.7) | ||
| Some college | 181 (15.3) | 36 (15.1) | ||
| College degree | 260 (21.9) | 38 (16.0) | ||
| Unknown | 255 (21.5) | 59 (24.8) | ||
| Family household income, n (%) | 0.008 | |||
| <$20,000 | 45 (3.7) | 11 (4.5) | ||
| $20,000–$44,999 | 95 (7.9) | 16 (6.5) | ||
| $45,000–$74,999 | 102 (8.4) | 10 (4.1) | ||
| ≥$75,000 | 116 (9.6) | 12 (4.9) | ||
| Unknown | 851 (70.4) | 197 (80.1) | ||
| Perceived weight status (%) | 0.173 | |||
| Underweight | 142 (11.5) | 27 (10.8) | ||
| Healthy weight | 683 (55.2) | 125 (49.8) | ||
| Overweight/obese | 412 (33.3) | 99 (39.4) | ||
| Self-reported weight status (%) | ||||
| Underweight | 23 (1.9) | NA | ||
| Healthy weight | 737 (59.3) | NA | ||
| Overweight/obese | 483 (38.9) | NA | ||
| Actual zBMI, mean (SD) | 0.9 (1.0) | 1.0 (1.2) | 0.128 | |
| Actual weight status (%) | 0.320 | |||
| Underweight | 13 (1.1) | 4 (1.6) | ||
| Healthy weight | 657 (53.3) | 125 (48.5) | ||
| Overweight/obese | 563 (45.7) | 129 (50.0) |
Percentages in each column were adjusted to total approximately 100%. Perceived weight status included collapsing or fitting “very underweight” and “slightly underweight” into underweight, “about the right weight” into healthy weight, and “slightly overweight” and “very overweight” into overweight/obese categories. Self-reported and actual weight status categories were assigned via age- and sex-specific BMI percentile scores based on the CDC 2000 growth charts. BMI, body mass index; CDC, Centers for Disease Control and Prevention; GED, General Educational Development; SD, standard deviation; zBMI, age- and sex-standardized BMI.
Missing data as follows: grade (n = 46), race/ethnicity (n = 48), mothers' education (n = 79), fathers' education (n = 85), family household income (n = 54), perceived weight status (n =21), self-reported weight status (n =266), actual zBMI (n = 7), and actual weight status (n = 18).