Table 4.

Significance levels (p-values) from four repeated measures ANOVA models that compared children who had adenotonsillectomy in the presence of obstructive sleep apnea (AT+OSA, n=40), those who had adenotonsillectomy in the absence of obstructive sleep apnea (AT−OSA, n=38), and controls (n=27).

Dependent variable	Main effect for group	Main effect for time	Time by group interaction	Group difference at baseline	Group difference at one year	Time difference for AT+OSA	Time difference for AT−OSA	Time difference for controls
Apnea/hypopnea index	<0.001	<0.001	<0.001	<0.001	0.526	<0.001	0.234	0.515
Behavioral Hyperactivity Index	0.020	0.002	0.362	0.008	0.129	0.018	0.003	0.620
Cognitive Attention Index	0.041	0.002	0.478	0.022	0.166	0.013	0.006	0.505
Mean Sleep Latency	0.124	0.097	0.001	0.002	0.939	<0.001	0.335	0.133