Table 2.
Distribution of the sample, and the mean and standard deviation of the number of piles, across demographic categories
| Characteristic | n | % | Mean±standard deviation |
|---|---|---|---|
| Total | 149 | 100 | 8.3±3.8 |
| Sex | |||
| Male | 64 | 43.0 | 7.7±3.9 |
| Female | 85 | 57.0 | 8.7±3.7 |
| Age (y) | |||
| 8 | 23 | 15.4 | 9.2±4.6 |
| 9 | 24 | 16.1 | 9.2±4.3 |
| 10 | 33 | 22.1 | 7.6±3.2 |
| 11 | 26 | 17.4 | 8.0±4.1 |
| 12 | 16 | 10.7 | 9.1 ±3.7 |
| 13 | 27 | 18.1 | 7.3±3.0 |
| Language spoken | |||
| English | 133 | 89.3 | 8.2±4.0 |
| Spanish | 16 | 10.7 | 9.1±2.4 |
| Race/ethnicity | |||
| White | 47 | 31.5 | 7.8±3.2 |
| African American | 36 | 24.2 | 7.8±4.4 |
| Hispanic | 64 | 43.0 | 9.0±3.8 |
| Othera | 2 | 1.3 | 6.0±5.7 |
| Obesity index | |||
| Normal (BMIb%<85%) | 84 | 56.4 | 8.5±3.8 |
| At risk (85%<BMI%<95%) | 28 | 18.8 | 8.5±4.5 |
| Overweight (BMI%≥95%) | 36 | 24.2 | 7.6±3.4 |
| Missinga | 1 | 0.7 | 5.0±NAc |
| Annual household incomed | |||
| <$20,000 | 22 | 14.8 | 11.2±4.6 |
| $20,000–$59,000 | 31 | 20.8 | 8.1 ±2.9 |
| >$60,000 | 77 | 51.7 | 8.2±3.7 |
| Missinga | 19 | 12.8 | 5.5±2.5 |
| Highest household educatione | |||
| High school graduate or less | 33 | 22.1 | 10.3±4.2 |
| Some college/technical school | 22 | 14.8 | 7.6±3.8 |
| College graduate | 78 | 52.3 | 8.2±3.4 |
| Missinga | 16 | 10.7 | 5.4±2.6 |
a
Missing category and "other" race/ethnicity not included in testing differences among number of piles.
b
BMI=body mass index.
c
NA=not applicable.
d
Significant effect [F(2,127)=6.37, P=0.002] for household income, post hoc revealed significant (P<0.0167) difference between <$20,000 and both higher income categories.
e
Significant effect for highest household education [F(2,132)=4.57, P=0.012]; however, post hoc tests yielded no significant (P<0.0167) pairwise comparisons.