Name

omahi3

Label

Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Description

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Calculation

omahi3 = 60*(oarbp + oarop + oanbp + oanop + marbp + marop + manrbp + manrop + hremba3 +hroa3 + hnrba3 + hnroa3) / slpprdp

Units

events per hour

Type

numeric

Visit Number vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Baseline	453	6.8	± 5.6	4.7	1.1	29.3	11	464
Follow-up	407	3.8	± 7.8	1.3	0.0	69.7	46	453

Treatment Arm vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	453	6.8	± 5.6	4.7	1.1	29.3	-	453
Early adenotonsillectomy (eAT)	226	6.9	± 5.7	4.8	1.2	27.7	-	226
Watchful waiting (WWSC)	227	6.7	± 5.7	4.5	1.1	29.3	-	227

Follow-up

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	407	3.8	± 7.8	1.3	69.7	46	453
Early adenotonsillectomy (eAT)	199	1.6	± 3.0	0.8	29.3	27	226
Watchful waiting (WWSC)	208	5.9	± 10.1	2.2	69.7	19	227

Age vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	453	6.8	± 5.6	4.7	1.1	29.3	-	453
5-7 yrs old	329	6.6	± 5.5	4.6	1.1	29.3	-	329
8-10 yrs old	124	7.2	± 6.0	5.2	1.4	27.7	-	124

Age vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Follow-up

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	397	3.8	± 7.9	1.3	69.7	2	399
5-7 yrs old	260	3.9	± 8.9	1.1	69.7	2	262
8-10 yrs old	137	3.6	± 5.6	1.6	35.5	-	137

Gender vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	453	6.8	± 5.6	4.7	1.1	29.3	-	453
Female	234	7.0	± 5.7	4.9	1.2	29.3	-	234
Male	219	6.5	± 5.6	4.5	1.1	26.0	-	219

Follow-up

	N	Mean	StdDev	Median	Max	Unknown	Total
Total	407	3.8	± 7.8	1.3	69.7	46	453
Female	209	4.1	± 8.9	1.3	69.7	25	234
Male	198	3.5	± 6.4	1.2	60.7	21	219

Race vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

Baseline

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	453	6.8	± 5.6	4.7	1.1	29.3	-	453
White	156	5.5	± 4.7	3.7	1.1	25.4	-	156
Black	249	7.5	± 5.9	5.5	1.2	29.3	-	249
Other	48	7.1	± 6.4	4.5	1.4	25.0	-	48

Follow-up

	N	Mean	StdDev	Median	Min	Max	Unknown	Total
Total	407	3.8	± 7.8	1.3	0.0	69.7	46	453
White	147	3.2	± 8.6	1.0	0.0	69.7	9	156
Black	217	4.4	± 7.7	1.6	0.0	62.0	32	249
Other	43	2.7	± 5.0	0.9	0.1	31.0	5	48