Table 3 Severity of CAO according to spirometric criteria of ATS/ERS using FEV1/FVC < 5th percentile predicted (LLN) method or the Global Initiative for Chronic Obstructive Pulmonary Disease (GOLD) criteria
From: Chronic airflow obstruction in Tanzania – a cross-sectional study
n | % | FEV1% of predicted | ||
|---|---|---|---|---|
CAO (LLN) | All | 24 | ||
Very severe | 2 | 8.3 | <35% | |
Severe | 0 | 0 | 35–49% | |
Moderately severe | 3 | 12.5 | 50–59% | |
Moderate | 6 | 25.0 | 60–69% | |
Mild | 13 | 54.2 | ≥70% | |
CAO (GOLD) | All | 30 | ||
Very severe | 2 | 6.7 | <30 | |
Severe | 0 | 0 | 30–49 | |
Moderate | 15 | 50.0 | 50–79 | |
Mild | 13 | 43.3 | ≥ 80 |