1 = 1993-1997
2 = 1999-2003
3 = 2011-2015

1 = normal finding
2 = pathology finding

1 = normalan nalaz
2 = gastritis
3 = ulkus zeluca
4 = tumor/infiltracija

1 = male
2 = femal

1 = HIV positive
2 = HIV negativ

1 = positive
2 = negative

1 = antrum gastritis
2 = body gastritis
3 = pangastritis

1 = +
2 = ++
3 = +++

0 = negative
1 = +
2 = ++
3 = +++

1 = IVDU
2 = sex
3 = bisex
4 = msm
5 = blood_blood.product
6 = unknown

1 = IVDU
2 = sex
3 = transfuzija
4 = unknown

1 = Yes_ AIDS
2 = No_AIDS

1 = A1
2 = A2
3 = A3
4 = B1
5 = B2
6 = B3
7 = C1
8 = C2
9 = C3

1 = No
2 = Yes

1 = ≤ 200
2 = > 200

1 = negative
2 = positive

1 = Primary
2 = secundary
3 = Higher