CDC-Data-2025/attachments/trachoma_data_dictionary.csv

1	Variable.number	Variable	Description	Value	Value.Description
2	1	SampleID	Unique identification number
3	2	sex	Sex	1	Male
4				2	Female
5	3	age	Age
6	4	age.f	Age category	(0,10]	0-10 years old
7				(10,20]	11-20 years old
8				(20,30]	21-30 years old
9				(30,40]	31-40 years old
10				(40,50]	41-50 years old
11				(50,90]	51-90 years old
12	5	luminex.mfi	Luminex MFI value
13	6	luminex	Luminex qualitative value (3 categories)	-	Negative
14				?	Indeterminate
15				+	Positive
16	7	luminex.dx	Luminex qualitative value (2 categories)	-	Negative
17				+	Positive
18	8	elisa.od	ELISA OD value, freshly-coated sample
19	9	elisa	ELISA freshly-coated sample qualitative value (3 categories)	-	Negative
20				?	Indeterminate
21				+	Positive
22	10	elisa.dx	ELISA freshly-coated sample qualitative value (2 categories)	-	Negative
23				+	Positive
24	11	elisa.dx.mt	ELISA freshly-coated sample qualitative value (mixture model cutoff)	-	Negative
25				+	Positive
26	12	elisa.pre.od	ELISA OD value, pre-coated sample
27	13	elisa.pre	ELISA pre-coated sample qualitative value (3 categories)	-	Negative
28				?	Indeterminate
29				+	Positive
30	14	elisa.pre.dx	ELISA pre-coated sample qualitative value (2 categories)	-	Negative
31				+	Positive
32	15	elisa.pre.dx.mt	ELISA pre-coated sample qualitative value (mixture model cutoff)	-	Negative
33				+	Positive
34	16	lfa.serum	LFA test result, serum sample, with indeterminate results	-	Negative
35				?	Indeterminate
36				+	Positive
37	17	lfa.blood	LFA test result, blood sample, with indeterminate results	-	Negative
38				?	Indeterminate
39				+	Positive
40	18	lfa.3	Combined LFA test result using 3 categories from blood and serum	-.-	Serum negative, blood negative
41				?.-	Serum indeterminate, blood negative
42				+.-	Serum positive, blood negative
43				?.?	Serum indeterminate, blood indeterminate
44				+.?	Serum positive, blood indeterminate
45				-.+	Serum negative, blood positive
46				?.+	Serum indeterminate, blood positive
47				+.+	Serum positive, blood positive
48	19	lfa.serum.2	LFA test result, serum sample, with indeterminate results treated as missing	-	Negative
49				+	Positive
50	20	lfa.blood.2	LFA test result, serum sample, with indeterminate results treated as missing	-	Negative
51				+	Positive
52	21	lfa.2	Combined LFA test result using 2 categories from blood and serum	-.-	Serum negative, blood negative
53				+.-	Serum positive, blood negative
54				-.+	Serum negative, blood positive
55				+.+	Serum positive, blood positive