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Table 1 The ILD-GAP model, reproduced from Ryerson et al. [11]

From: Assessment of precision irradiation in early non-small cell lung cancer and interstitial lung disease (ASPIRE-ILD): study protocol for a phase II trial

Predictor Points
ILD ILD Subtype  
• Idiopathic pulmonary fibrosis 0
• Unclassifiable ILD 0
• Connective tissue-ILD / idiopathic non-specific interstitial pneumonia −2
• Chronic hypersensitivity pneumonitis −2
G Gender  
• Female 0
• Male 1
A Age  
• ≤ 60 0
• 61–65 1
• > 65 2
P Physiology  
FVC, % predicted  
• > 75% 0
• 50–75% 1
• < 50% 2
DLCO, % predicted  
• > 55% 0
• 36–55% 1
• ≤ 35% 2
• Cannot perform 3
Total Possible Points 8