1 = male
2 = female

1 = never/ex smoker
2 = current smoker

CT-scan: location of tumor
1 = right lower lobe
2 = right middle lobe
3 = right hilus
4 = right upper lobe
5 = left lower lobe
6 = left upper lobe
7 = left hilus
8 = mediastinum
9 = not applicable
10 = lingula
11 = upper lobe, unspecified
12 = lower lobe, unspecified
13 = lung,trachea
14 = lung, trachea left
15 = lung,trachea, right
16 = LUL+LLL
17 = right bronchus
18 = left bronchus
19 = multiple lobes

T-stage (combined 6th or 7th edition)
1 = T0-1
2 = T2
3 = T3
4 = T4
5 = Tx
9 = missing
99 = unknown/no info

N-stage (combined 6th or 7th edition)
1 = N0
2 = N1
3 = N2
4 = N3
5 = Nx
99 = unknown/no info

1 = IIIA
2 = IIIB

1 = no chemo
2 = sequentieel
3 = concurrent

1 = no chemo
2 = sequential selected
3 = standard sequential
4 = standard concomitant

0 = alive
1 = dead