Variable Label (VAR)	Variable Name	Category	N(%)	N(Missing)	Mean(SD)	Median(Q1,Q3)	Range of Values	
A1. Blind_ID	BLIND_ID			629(0)	484.28(270.74)	483.00(253.00,726.00)	2.00-919.00	
								
A2. Study visit	STUDYVISIT	Genetics visit	629(100.0)					
								
B1. Source of sample	SOURCE	Biologic Father	177(28.1)					
								
		Biologic Mother	213(33.9)					
								
		Study Subject	239(38.0)					
								
B2. Sample collection (for DNA)	SAMP_DNA	Blood	506(80.4)					
								
		NA	1(0.2)					
								
		Saliva	122(19.4)					
								
B2c. Patient's age (years) at DNA collection	PATIENT_AGE_DNA_COLLEC			627(2)	4.30(1.98)	3.63(2.80,5.72)	1.09-9.82	
								
B2d. Stored at (<24hrs)	DNA_STORED_T	4C (Refrigerator)	494(78.5)					
								
		Ambient temperature	133(21.1)					
								
		Missing	1(0.2)					
								
		Skipped	1(0.2)					
								
B2e. Shipped to Biorepository	DNA_SHIP_T	Ambient temperature	131(20.8)					
								
		Frozen gel packs	496(78.9)					
								
		Missing	1(0.2)					
								
		Skipped	1(0.2)					
								
B2f. Patient's age (years) at DNA sample shipping	PATIENT_AGE_DNA_SHIP			627(2)	4.30(1.98)	3.64(2.80,5.72)	1.09-9.82	
								
B3a. Patient's age (years) at serum collection	PATIENT_AGE_SER_COLLEC			492(137)	3.70(1.52)	3.35(2.69,4.35)	1.09-8.95	
								
B3b. Is serum separated?	SER_SEPARATE	No	149(23.7)					
								
		Skipped	137(21.8)					
								
		Yes	343(54.5)					
								
B3c. Stored at (<24 hrs)	SER_STORED_T	-20C (Lab freezer)	338(53.7)					
								
		-80C (Deep freezing)	5(0.8)					
								
		4C (Refrigerator)	149(23.7)					
								
		Skipped	137(21.8)					
								
B3d. Shipped to Biorepository	SER_SHIP_T	Dry ice	343(54.5)					
								
		Frozen gel packs	149(23.7)					
								
		Skipped	137(21.8)					
								
B3e. Patient's age (years) at serum sample shipping	PATIENT_AGE_SER_SHIP			492(137)	3.70(1.52)	3.35(2.69,4.35)	1.09-8.95	
								
Form Version	VER_ID	A	572(90.9)					
								
		UNKNOWN	57(9.1)