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Table 1 Global Initiative for Chronic Obstructive Lung Disease (GOLD) Grading system for COPD (Adapted from reference #) [[1]]

From: Chronic obstructive pulmonary disease and glucose metabolism: a bitter sweet symphony

Grade

Severity

Spirometry findings

GOLD 1

Mild

FEV 1 /FVC<0.7 and FEV 1 ≥80% predicted

GOLD 2

Moderate

FEV 1 /FVC<0.7 and 50%≤FEV 1 ≥80% predicted

GOLD 3

Severe

FEV 1 /FVC<0.7 and 30%≤FEV 1 ≥50% predicted

GOLD 4

Very Severe

FEV 1 /FVC<0.7 and FEV 1 >30% predicted

  1. Abbreviations: GOLD: Global Initiative for Chronic Obstructive Lung Disease; FEV 1 : Forced Expiratory Flow in 1 second; FVC: Forced Vital Capacity.