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Table 4 Scoring system for the SWSM

From: Predicting 2-year survival in stage I-III non-small cell lung cancer: the development and validation of a scoring system from an Australian cohort

Variable Points
ECOG performance status  
 0 2
 1 0
 ≥ 2 3
DLCO (%)  
 > 132 0
 118–132 1
 102–117 2
 87–101 3
 72–86 4
 56–71 5
 41–55 6
 26–40 7
 < 26 8
Histological diagnosis  
 Squamous cell carcinoma 3
 Adenocarcinoma 0
 Other 1
Tumour lobe  
 Upper 0
 Middle/lower 2
EQD2  
 > 85 0
 77–85 1
 68–76 2
 59–67 3
 50–58 4
 41–49 5
 32–40 6
 23–31 7
 14–22 8
 5–13 9
 < 5 10
Risk group  
 1 < 10
 2 10–15
 3 > 15
  1. SWSM = South West Sydney Model; ECOG = Eastern Cooperative Oncology Group; DLCO = diffusing capacity of the lung for carbon monoxide; EQD2 = equivalent dose in 2 Gy fractions