Gender

Visit Number vs Total duration of A1-phases/total duration of NREM sleep

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Baseline	452	0.05	± 0.03	0.04	0.0	0.1	1	453
Follow-up	407	0.05	± 0.03	0.05	0.003	0.2	46	453

Treatment Arm vs Total duration of A1-phases/total duration of NREM sleep

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	452	0.05	± 0.03	0.04	0.0	0.1	1	453
Early adenotonsillectomy (EAT)	225	0.05	± 0.02	0.05	0.0	0.1	1	226
Watchful waiting with supportive care (WWSC)	227	0.05	± 0.03	0.04	0.0005	0.1	-	227

Treatment Arm vs Total duration of A1-phases/total duration of NREM sleep

Follow-up

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	407	0.05	± 0.03	0.05	0.003	0.2	46	453
Early adenotonsillectomy (EAT)	199	0.05	± 0.03	0.05	0.004	0.2	27	226
Watchful waiting with supportive care (WWSC)	208	0.05	± 0.03	0.05	0.003	0.1	19	227

Child's age vs Total duration of A1-phases/total duration of NREM sleep

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	452	0.05	± 0.03	0.04	0.0	0.1	1	453
5 - 7 years old	328	0.05	± 0.03	0.04	0.0	0.1	1	329
8 - 10 years old	124	0.05	± 0.02	0.05	0.0007	0.1	-	124

Child's age vs Total duration of A1-phases/total duration of NREM sleep

Follow-up

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	397	0.05	± 0.03	0.05	0.003	0.2	2	399
5 - 7 years old	260	0.05	± 0.03	0.05	0.003	0.1	2	262
8 - 10 years old	137	0.05	± 0.03	0.05	0.005	0.2	-	137

Child's gender vs Total duration of A1-phases/total duration of NREM sleep

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	452	0.05	± 0.03	0.04	0.0	0.1	1	453
Female	233	0.05	± 0.03	0.05	0.0005	0.1	1	234
Male	219	0.05	± 0.02	0.04	0.0	0.1	-	219

Child's gender vs Total duration of A1-phases/total duration of NREM sleep

Follow-up

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	407	0.05	± 0.03	0.05	0.003	0.2	46	453
Female	209	0.05	± 0.03	0.05	0.003	0.2	25	234
Male	198	0.05	± 0.02	0.04	0.004	0.1	21	219

Child's race vs Total duration of A1-phases/total duration of NREM sleep

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	452	0.05	± 0.03	0.04	0.0	0.1	1	453
White	156	0.04	± 0.03	0.04	0.0005	0.1	-	156
Black	249	0.05	± 0.03	0.05	0.002	0.1	-	249
Other	47	0.04	± 0.03	0.04	0.0	0.1	1	48

Child's race vs Total duration of A1-phases/total duration of NREM sleep

Follow-up

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	407	0.05	± 0.03	0.05	0.003	0.2	46	453
White	147	0.05	± 0.03	0.04	0.003	0.1	9	156
Black	217	0.05	± 0.03	0.05	0.004	0.2	32	249
Other	43	0.04	± 0.02	0.04	0.005	0.1	5	48

Childhood Adenotonsillectomy Trial