Variable Label (VAR)	Variable Name	Category	N(%)	N(Missing)	Mean(SD)	Median(Q1,Q3)	Range of Values	
A1. Blind_ID	BLIND_ID			208(0)	470.11(269.97)	462.00(227.00,708.50)	2.00-919.00	
								
A2. Patient's age (years) at start of recording	HOLTER_D_AGE			208(0)	6.20(0.36)	6.16(6.01,6.35)	5.53-7.93	
								
A3a. Hours	HOLTER_HR			208(0)	22.50(2.11)	23.00(23.00,23.00)	8.00-24.00	
								
A3b. Minutes	HOLTER_MIN			208(0)	54.81(12.50)	59.00(59.00,59.00)	0.00-59.00	
								
A4.Recording quality	QUALITY	Adequate	208(100.0)					
								
B1. Symptoms	SYMPTOMS			.(.)	.(.)	.(.,.)	.-.	
								
B2. Pacemaker	PACEMAKER	No	198(95.2)					
								
		Yes	10(4.8)					
								
B2a. Mode	PACE_MODE	AVI	5(2.4)					
								
		DDD	4(1.9)					
								
		Missing	198(95.2)					
								
		VVI	1(0.5)					
								
B2b. Lower rate	PACE_LOWRATE			10(198)	70.50(6.85)	70.00(70.00,75.00)	60.00-80.00	
								
B2c. Upper rate	PACE_HIRATE			3(205)	133.33(11.55)	140.00(120.00,140.00)	120.00-140.00	
								
B3. Predominant rhythm	PRED_RHYTHM	JUNCTIONAL	1(0.5)					
								
		OTHER	4(1.9)					
								
		SR	203(97.6)					
								
B3a. Specify	PRED_OTHSPEC			.(.)	.(.)	.(.,.)	.-.	
								
B4. Are there any significant non-predominating rhythms?	NONPRED	Don't Know	3(1.4)					
								
		No	182(87.5)					
								
		Yes	23(11.1)					
								
B4.1. SR	NONPRED_NSR	Don't Know	9(4.3)					
								
		Missing	185(88.9)					
								
		No	10(4.8)					
								
		Yes	4(1.9)					
								
B4.2. ATRIAL NON-SINUS	NONPRED_ATR	Don't Know	7(3.4)					
								
		Missing	185(88.9)					
								
		No	9(4.3)					
								
		Yes	7(3.4)					
								
B4.3. JUNCTIONAL --	NONPRED_JCT	Don't Know	5(2.4)					
								
		Missing	185(88.9)					
								
		No	7(3.4)					
								
		Yes	11(5.3)					
								
B4.4. OTHER	NONPRED_OTH	Don't Know	6(2.9)					
								
		Missing	185(88.9)					
								
		No	12(5.8)					
								
		Yes	5(2.4)					
								
B4.4a. Specify	NONPREDOTHSP			.(.)	.(.)	.(.,.)	.-.	
								
B5. Atrial ectopy	AECTOPY	No	136(65.4)					
								
		Yes	72(34.6)					
								
B5a. Isolated	AECTOP_ISOL	FREQUENT (>60 / HOUR)	5(2.4)					
								
		Missing	136(65.4)					
								
		NONE	3(1.4)					
								
		OCCASIONAL (1-60 / HOUR)	12(5.8)					
								
		RARE (<1 / HOUR)	52(25.0)					
								
B5b. Coupled	AECTOP_COUPL	Don't Know	11(5.3)					
								
		FREQUENT (>60 / HOUR)	1(0.5)					
								
		Missing	136(65.4)					
								
		NONE	53(25.5)					
								
		OCCASIONAL (1-60 / HOUR)	2(1.0)					
								
		RARE (<1 / HOUR)	5(2.4)					
								
B5c. Non-sustained tachyarrhythmia (3-30 beats)	AECTOP_NTACH	Don't Know	11(5.3)					
								
		Missing	136(65.4)					
								
		NONE	56(26.9)					
								
		OCCASIONAL (1-60 / HOUR)	1(0.5)					
								
		RARE (<1 / HOUR)	4(1.9)					
								
B5d. Sustained tachyarrhythmia	AECTOP_STACH	Don't Know	12(5.8)					
								
		Missing	136(65.4)					
								
		NONE	60(28.8)					
								
B5e. Summary	AECTOP_SUMM			.(.)	.(.)	.(.,.)	.-.	
								
B6. Ventricular ectopy	VECTOPY	No	89(42.8)					
								
		Yes	119(57.2)					
								
B6a. Isolated	VECTOP_ISOL	Missing	89(42.8)					
								
		OCCASIONAL (1-60 / HOUR)	8(3.8)					
								
		RARE (<1 / HOUR)	111(53.4)					
								
B6b. Coupled	VECTOP_COUPL	Don't Know	9(4.3)					
								
		Missing	89(42.8)					
								
		NONE	102(49.0)					
								
		RARE (<1 / HOUR)	8(3.8)					
								
B6c. Non-sustained tachyarrhythmia (3-30 beats)	VECTOP_NTACH	Don't Know	10(4.8)					
								
		Missing	89(42.8)					
								
		NONE	106(51.0)					
								
		RARE (<1 / HOUR)	3(1.4)					
								
B6d. Sustained tachyarrhythmia	VECTOP_STACH	Don't Know	10(4.8)					
								
		Missing	89(42.8)					
								
		NONE	109(52.4)					
								
B6e. Summary	VECTOP_SUMM			.(.)	.(.)	.(.,.)	.-.	
								
B7. Abnormalities of atrioventricular conduction  --	ABN	Don't Know	2(1.0)					
								
		No	169(81.3)					
								
		Yes	37(17.8)					
								
B7a. 1st degree AV block --	ABN1	Don't Know	3(1.4)					
								
		Missing	169(81.3)					
								
		No	3(1.4)					
								
		Not Applicable	1(0.5)					
								
		Yes	32(15.4)					
								
B7a1. Throughout recording	ABN1_THROU	Don't Know	3(1.4)					
								
		Missing	173(83.2)					
								
		No	24(11.5)					
								
		Yes	8(3.8)					
								
B7a2. Intermittent	ABN1_INTER	Don't Know	5(2.4)					
								
		Missing	173(83.2)					
								
		No	8(3.8)					
								
		Yes	22(10.6)					
								
B7b. 2nd degree AV block	ABN2	Don't Know	4(1.9)					
								
		Missing	169(81.3)					
								
		No	26(12.5)					
								
		Not Applicable	1(0.5)					
								
		Yes	8(3.8)					
								
B7b1. Mobitz	ABN2_MOBITZ	Don't Know	5(2.4)					
								
		Missing	196(94.2)					
								
		Type I	3(1.4)					
								
		Type II	4(1.9)					
								
B7b2. Rare (<1/hr)	ABN2_RARE	Don't Know	7(3.4)					
								
		Missing	196(94.2)					
								
		No	1(0.5)					
								
		Yes	4(1.9)					
								
B7b3. Occasional (1-60/hr)	ABN2_OCCAS	Don't Know	7(3.4)					
								
		Missing	196(94.2)					
								
		No	4(1.9)					
								
		Yes	1(0.5)					
								
B7b4. Frequent (>60/hr)	ABN2_FREQ	Don't Know	8(3.8)					
								
		Missing	196(94.2)					
								
		No	2(1.0)					
								
		Yes	2(1.0)					
								
B7c. 3rd degree AV block	ABN3	Don't Know	5(2.4)					
								
		Missing	169(81.3)					
								
		No	33(15.9)					
								
		Not Applicable	1(0.5)					
								
B7c1. Throughout recording	ABN3_THROU	Don't Know	5(2.4)					
								
		Missing	203(97.6)					
								
B7c2. Intermittent	ABN3_INTER	Don't Know	5(2.4)					
								
		Missing	203(97.6)					
								
B7c3. Escape	ABN3_ESCAPE	Don't Know	5(2.4)					
								
		Missing	203(97.6)					
								
B8a1. Mean (beats/minute)	HRENT_MEAN			208(0)	87.42(12.65)	88.00(79.00,95.00)	53.00-130.00	
								
B8a2. Minimum (beats/minute)	HRENT_MIN			208(0)	61.19(14.15)	59.00(50.00,70.00)	35.00-109.00	
								
B8a3. Maximum (beats/minute)	HRENT_MAX			208(0)	145.58(22.64)	144.00(131.00,160.00)	71.00-202.00	
								
B9. Longest R-R interval	RR_INT			208(0)	1.19(0.30)	1.20(1.00,1.40)	0.60-2.70	
								
B10. Short term variability	VAR_SHORT			.(.)	.(.)	.(.,.)	.-.	
								
B11. Long term variability	VAR_LONG			.(.)	.(.)	.(.,.)	.-.	
								
B12. Rhythm during symptoms	RHYTHM_SYMP			.(.)	.(.)	.(.,.)	.-.	
								
B13. Summary	SUMMARY			.(.)	.(.)	.(.,.)	.-.