Additional information about the recordings used in the PhysioNet/CinC Challenge 2000

The table below presents additional information (not made available during the challenge)
about the Apnea-ECG Database records.  The first column of the table contains the record
names.

For scoring, each record was divided into one-minute non-overlapping segments.  The number
of such segments is given in the second column of the table below.  Each minute was classified
as either a "non-apnea minute" (tallied in the third column) or an "apnea minute" (in the
fourth column).  Minutes containing either apnea or hypopnea were classified as apnea minutes.

The one-minute segments were grouped into 60-minute non-overlapping segments for each record,
and the number of these groups containing between 5 and 60 apnea minutes is tallied in the
fifth column, "hours with apnea".  Hours containing 1 to 4 apnea minutes (not considered to
be clinically significant) were counted as hours without apnea for this purpose.

The apnea index (AI) is the number of apneas observed per hour, and the HI is the number
of hypopneas observed per hour.  The apnea-hypopnea index (AHI) is defined as the sum of
AI and HI.

The data contained in the table were kindly provided by Dr. Thomas Penzel.

Record	Length	non-apn	apnea	hours	AI	HI	AHI	Age	Sex	height	weight
	minutes	minutes	minutes	w/apnea						(cm)	(kg)

a01	490	20	470	9	12.5	57.1	69.6	51	M	175	102		
a02	529	109	420	9	57.2	12.3	69.5	38	M	180	120		
a03	520	274	246	9	38.4	0.7	39.1	54	M	168	80		
a04	493	40	453	9	73.4	4	77.4	52	M	173	121		
a05	455	179	276	8	35	6	41	58	M	176	78		
a06	511	305	206	8	16.6	8.1	24.7	63	M	179	104		
a07	512	190	322	9	46	17	63	44	M	177	105		
a08	502	313	189	7	32	10	42	51	M	179	88		
a09	496	115	381	9	23.1	8.6	31.7	52	M	178	82		
a10	518	418	100	6	11	10	21	58	M	176	78		
a11	467	245	222	8	11	3	14	58	M	168	103		
a12	578	44	534	10	70	10.2	80.2	52	M	173	121		
a13	496	252	244	9	32	10	42	51	M	179	88		
a14	510	127	383	8	17.3	37.4	54.7	51	M	175	102		
a15	511	143	368	9	46	6	52	60	M	176	113		
a16	483	163	320	7	17	24	41	44	M	177	105		
a17	486	328	158	5	21	12	33	40	M	179	96		
a18	490	52	438	9	75.5	6.9	82.4	52	M	178	82		
a19	503	298	205	9	34	0	34	55	M	178	90		
a20	511	196	315	9	35	6	41	58	M	176	78		
b01	488	469	19	2	0.12	0.12	0.24	44	F	170	63		
b02	518	425	93	5	14	5	19	53	M	176	85		
b03	442	369	73	4	22	2	24	53	M	176	85		
b04	430	420	10	1	0.7	0	0.7	42	M	180	64		
b05	434	377	57	3	2	3	5	52	M	180	135		
c01	485	485	0	0	0	0	0	31	M	184	74		
c02	503	502	1	0	0	0	0	37	M	180	83		
c03	455	455	0	0	0	0	0	39	M	184	65		
c04	483	483	0	0	0	0	0	41	F	180	65		
c05	467	464	3	0	0	0	0	28	F	169	57		
c06	469	468	1	0	0	0.25	0.25	28	F	171	65		
c07	454	450	4	0	0	0	0	30	F	168	56		
c08	535	535	0	0	0	0	0	42	M	180	64		
c09	469	467	2	0	0	0	0	37	M	180	83		
c10	432	431	1	0	0	0	0	27	M	184	72		
	
x01	524	149	375	9	46	17	63	44	M	177	105		
x02	470	261	209	7	27.3	10.4	37.7	46	M	167	69		
x03	466	454	12	1	0.13	0	0.13	44	F	170	63		
x04	483	483	0	0	0	0	0	39	M	184	65		
x05	506	190	316	9	34	0	34	55	M	178	90		
x06	451	451	0	0	0	0	0	31	M	170	66		
x07	510	270	240	8	11	10	21	58	M	176	78		
x08	518	194	324	8	48	0	48	55	M	178	90		
x09	509	342	167	5	1.8	16.7	18.5	43	M	177	80		
x10	511	415	96	6	3	7	10	39	M	170	131		
x11	458	445	13	1	2	3	5	52	M	180	135		
x12	528	471	57	4	21	12	33	40	M	179	96		
x13	507	215	292	8	18.5	0.2	18.7	57	M	171	97		
x14	491	52	439	9	61.2	18.3	79.5	38	M	180	120		
x15	499	299	200	8	11.3	4.6	15.9	63	M	179	104		
x16	516	451	65	4	22	2	24	53	M	176	85		
x17	401	400	1	0	0	0	0	27	F	158	53		
x18	460	458	2	0	0	0	0	27	M	184	72		
x19	488	81	407	9	50.1	6.1	56.2	54	M	168	80		
x20	514	250	264	8	34	9	43	51	M	179	88		
x21	511	391	120	4	14	5	19	53	M	176	85		
x22	483	481	2	0	0	0	0	27	F	158	53		
x23	528	409	119	3	9.9	4.4	14.3	43	M	177	80		
x24	430	429	1	0	0	0	0	31	M	170	66		
x25	511	220	291	9	48	0	48	55	M	178	90		
x26	521	177	344	9	14.4	0.7	15.1	57	M	171	97		
x27	499	11	488	9	71	4	75	60	M	176	113		
x28	496	62	434	9	71	4	75	60	M	176	113		
x29	471	471	0	0	0	0	0	41	F	180	65		
x30	512	186	326	9	17	24	41	44	M	177	105		
x31	558	42	516	10	86.8	6.7	93.5	29	F	183	100		
x32	539	114	425	9	63.3	8.5	71.8	29	F	183	100		
x33	474	471	3	0	0.13	0	0.13	28	F	169	57		
x34	476	472	4	0	0.38	0	0.38	30	F	168	56		
x35	484	484	0	0	0	0	0	31	M	184	74