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Table 2 The severity of airflow limitation and total LAA scores in patients with emphysema phenotype

From: The association of Toll-like receptor 4 gene polymorphisms with the development of emphysema in Japanese subjects: a case control study

GOLD stage * Number of patients (%)
Stage I 18 (17.0%)
Stage II 42 (39.6%)
Stage III 28 (26.4%)
Stage IV 18 (17.0%)
Total LAA score Patient number (%)
7-12 46 (43.4%)
13-18 24 (22.6%)
19-24 36 (34.0%)
  1. Abbreviations: GOLD global initiative for chronic obstructive lung disease; LAA low attenuation area
  2. *determined by GOLD spirometric classification
  3. determined by Goddard's method; scores represent total LAAs detected in 6 lung images