Variable Label (VAR)	Variable Name	Category	N(%)	N(Missing)	Mean(SD)	Median(Q1,Q3)	Range of Values	
A1. Blind_ID	BLIND_ID			548(0)	465.40(272.24)	441.50(219.00,710.00)	2.00-919.00	
								
A3. Study visit	VISIT	Pre-Fontan Echo	272(49.6)					
								
		Study visit 9 (year 6 Echo)	276(50.4)					
								
A4. Acquired at PHN Center?	PHN_CENTER	No	113(20.6)					
								
		Yes	435(79.4)					
								
B1. Patient's age (years) at echocardiogram	PATIENT_AGE_ECHO			548(0)	4.41(1.71)	5.05(2.75,6.02)	1.13-7.39	
								
B2. Length	HT_ECHO			541(7)	100.22(12.21)	101.40(90.00,111.00)	72.00-128.00	
								
B3. Weight	WT_ECHO			546(2)	16.03(4.07)	15.63(12.72,18.60)	7.40-32.60	
								
Haycock Body Surface Area, m2	ECHOBSA			450(98)	0.65(0.12)	0.63(0.55,0.74)	0.40-1.25	
								
Form Version	VER_ID	B	452(82.5)					
								
		UNKNOWN	96(17.5)