1 Demographics and maternal characteristics of children before and after adenoidectomy and tonsillectomy, and of matched controls
| Before | After | Control | |
| Subjects n | 19 | 19# | 19¶ |
| Age yrs | |||
| Questionnaire completion | 4.2±0.77 | 4.2±0.77# | 4.3±0.67 |
| PSG | 4.4±0.70 | 4.9±0.70 | 4.5±0.64 |
| Males % | 53 | 53# | 53¶ |
| Ethnicity % | |||
| Caucasian | 32 | 32# | 32¶ |
| African-American | 58 | 58# | 58¶ |
| Asian/Pac. I. or other | 10 | 10# | 10¶ |
| Maternal education % | |||
| Junior high school | 5 | 5# | 5¶ |
| High school | 68 | 68# | 68¶ |
| College | 21 | 21# | 21¶ |
| Graduate school | 5 | 5# | 5¶ |
Data are presented as mean±sd or percentages. PSG: polysomnography; Pac. I.: Pacific Islander. #: value unchanged post-operatively; ¶: controls matched on this variable: no difference.