TABLE 5.
PREVALENCE OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE AS DEFINED BY THE AMERICAN THORACIC SOCIETY/EUROPEAN RESPIRATORY SOCIETY–DEFINED LOWER LIMIT OF NORMAL AT THE FIFTH PERCENTILE, GLOBAL INITIATIVE FOR OBSTRUCTIVE LUNG DISEASE, AND LAMBDA-MU-SIGMA–LOWER LIMIT OF NORMAL AT THE FIFTH PERCENTILE THRESHOLDS FOR FEV1/FVC
| No. (%) of Participants |
|||
|---|---|---|---|
| FEV1/FVC Threshold | All, 40–80 Yr (n = 3,502) | Middle Age, 40–64 Yr (n = 2,005) | Older-Age, 65–80 Yr (n = 1,497) |
| <ATS/ERS-LLN5 | 599 (17.1) | 312 (15.6) | 287 (19.2) |
| <0.70 (GOLD) | 947 (27.0) | 382 (19.1) | 565 (37.7) |
| <LMS-LLN5 | 484 (13.8) | 286 (14.3) | 198 (13.2) |
Definition of abbreviations: ATS/ERS-LLN5= American Thoracic Society/European Respiratory Society–defined lower limit of normal at the fifth percentile; GOLD = Global Initiative for Obstructive Lung Disease, with a fixed-ratio threshold of 0.70; LMS = lambda-mu-sigma; LMS-LLN5 = LMS-defined LLN5.