Table 2.
Estimated population prevalence of airflow obstruction and spirometric restriction in 19 sites of the Burden of Obstructive Lung Disease (BOLD) study with good quality spirometry and data on history of tuberculosis (at least 5 cases).
| Albania (Tirana) | Algeria (Annaba) | Austria (Salzburg) | Canada (Vancouver) | China (Guangzhou) | England (London) | Estonia (Tartu) | Germany (Hannover) | Iceland (Reykjavik) | India (Pune) | Morocco (Fes) | Netherlands (Maastricht) | Philippines (Manila) | Philippines (Nampicuan & Talugtug) | Poland (Krakow) | Portugal (Lisbon) | South Africa (Cape Town) | Sweden (Uppsala) | USA (Lexington) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | 939 | 890 | 1253 | 827 | 461 | 675 | 613 | 680 | 757 | 845 | 768 | 590 | 892 | 722 | 526 | 711 | 846 | 547 | 508 |
| Airflow obstruction (%) | 8.9 | 6.4 | 17.4 | 13.5 | 7.6 | 17.6 | 6.1 | 8.2 | 11.3 | 6.1 | 8.9 | 18.8 | 9.4 | 15.2 | 13.5 | 8.3 | 19.5 | 9.6 | 14.4 |
| Spirometric restriction (%) | 16.1 | 26.5 | 9.3 | 8.5 | 29.9 | 17.8 | 8.5 | 9.0 | 12.5 | 66.1 | 19.3 | 10.1 | 62.7 | 56.7 | 10.1 | 10.7 | 46.7 | 10.2 | 26.2 |
| Response rate (%) * | 82.3 | 94.6 | 65.0 | 26.0 | 87.0 | 17.0 | 49.0 | 59.0 | 81.0 | 97.0 | 98.0 | 48.0 | 58.0 | 85.5 | 78.0 | 10.0 | 63.0 | 61.0 | 14.0 |
| Cooperation rate (%) ** | 84.0 | 94.6 | 67.0 | 51.0 | 87.0 | 37.0 | 70.0 | 61.0 | 84.0 | 97.0 | 98.0 | 55.0 | 58.0 | 86.2 | 79.0 | 27.0 | 68.0 | 63.0 | 27.0 |
Airflow obstruction, FEV1/FVC < LLN. Spirometric restriction, FVC < LLN.
*
Denominator comprises people of unknown eligibility status who could not be contacted. Only known participants considered ineligible were excluded.
**
Denominator comprises only participants who were contacted and eligible.