Fixed ratio criterion (FEV1/FVC<0.70) | |||||
---|---|---|---|---|---|
Estimates based on pre- bronchodilator spirometry dataa | Estimates based on pre and post-bronchodilator spirometry datab | ||||
Original exam weights (n = 5532) | Weights adjusted for non-response (n = 5532) | Original exam weights (n = 4986) | Pre-BR and Post-BR weights adjusted for non-response (n = 4986) | Post-BR missing data imputed then Pre-BR weights adjusted for non-response (n = 5532) | |
Overall | 20.3 (1.1) | 20.9 (1.1) | 8.3 (0.7) | 14.0 (1.0) | 13.7 (0.8) |
Stage I (Mild)c | 10.9 (0.7) | 11.0 (0.7) | 5.0 (0.6) | 7.9 (0.8) | 7.2 (0.5) |
Stage II (Moderate)c | 7.8 (0.6) | 8.0 (0.6) | 2.4 (0.2) | 4.7 (0.5) | 5.0 (0.4) |
Stage III and IV (Severe/Very Severe)c | 1.1 (0.2) | 1.2 (0.2) | 0.3 (0.1) | 0.7 (0.2) | 0.8 (0.2) |
Age | |||||
40–59 | 15.4 (1.2) | 15.6 (1.2) | 6.2 (0.7) | 9.4 (1.0) | 9.2 (0.9) |
60–79 | 30.7 (1.3) | 31.2 (1.3) | 13.3 (1.1) | 23.0 (1.7) | 22.6 (1.2) |
Gender | |||||
Male | 24.1 (1.2) | 24.8 (1.3) | 11.4 (0.9) | 17.4 (1.2) | 17.4 (1.0) |
Female | 16.7 (1.3) | 17.3 (1.3) | 5.4 (0.6) | 10.8 (1.3) | 10.4 (0.8) |
Race and ethnic origin | |||||
Non-Hispanic white | 22.5 (1.2) | 22.9 (1.2) | 9.5 (0.8) | 15.0 (1.1) | 14.9 (0.9) |
Non-Hispanic black | 17.4 (1.3) | 18.0 (1.4) | 6.9 (0.9) | 14.1 (2.0) | 12.8 (1.3) |
Mexican-American | 10.1 (.7) | 10.4 (0.7) | 2.7 (0.6) | 5.4 (1.1) | 5.8 (0.8) |