Table 1. Baseline Study Characteristics of Children Enrolled in the Childhood Adenotonsillectomy Trial .
| Variablea | No. (%) |
|---|---|
| Age, mean (SD), y | 6.6 (1.4) |
| Sex | |
| Male | 219 (48) |
| Female | 234 (52) |
| Race/ethnicityb | |
| White | 156 (35) |
| Black | 249 (55) |
| Other | 48 (11) |
| BMI percentile for age, mean (SD)c | 70.2 (30.8) |
| Obesity | 150 (33) |
Abbreviation: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared).
a
Continuous variables are described as mean (SD), and categorical variables as numbers (%).
b
Race/ethnicity was self-selected by the primary caregiver.
c
A BMI in the 95th percentile or higher was considered a criterion for obesity.