Symptom at study entry | FEV1pp pre-BD at study entry | FEV1pp pre-BD at follow-up | Annual decline in FEV1pp |
Women | |||
Recurrent wheeze | |||
No (n=115) | 92.6 (11.6) | 93.7 (14.7) | 0.087 (0.602) |
Yes (n=430) | 89.3 (12.8) | 89.4 (15.6) | 0.014 (0.608) |
P value | 0.013 | 0.009 | 0.254 |
Dyspnoea | |||
No (n=370) | 91.6 (12.2) | 91.5 (15.5) | 0.006 (0.623) |
Yes (n=175) | 86.7 (12.9) | 87.9 (15.4) | 0.078 (0.570) |
P value | <0.001 | 0.012 | 0.194 |
Longstanding cough | |||
No (n=270) | 90.5 (12.9) | 91.0 (16.0) | 0.042 (0.573) |
Yes (n=275) | 89.5 (12.4) | 89.7 (15.0) | 0.017 (0.638) |
P value | 0.358 | 0.340 | 0.637 |
Productive cough | |||
No (n=350) | 90.8 (12.1) | 91.5 (14.8) | 0.049 (0.589) |
Yes (n=195) | 88.6 (13.3) | 88.2 (16.6) | −0.007 (0.638) |
P value | 0.051 | 0.016 | 0.303 |
Men | |||
Recurrent wheeze | |||
No (n=100) | 90.1 (12.4) | 86.5 (13.6) | −0.147 (0.576) |
Yes (n=332) | 85.5 (15.3) | 81.8 (16.8) | −0.197 (0.638) |
P value | 0.007 | 0.010 | 0.482 |
Dyspnoea | |||
No (n=368) | 87.4 (14.5) | 83.5 (15.7) | −0.193 (0.613) |
Yes (n=64) | 81.7 (16.0) | 79.2 (18.8) | −0.144 (0.685) |
P value | 0.005 | 0.049 | 0.563 |
Longstanding cough | |||
No (n=264) | 87.3 (14.7) | 84.0 (15.6) | −0.159 (0.588) |
Yes (n=168) | 85.4 (14.9) | 81.2 (17.1) | −0.227 (0.675) |
P value | 0.192 | 0.086 | 0.275 |
Productive cough | |||
No (n=281) | 87.5 (14.5) | 84.0 (15.1) | −0.169 (0.624) |
Yes (n=151) | 84.8 (15.2) | 80.7 (18.0) | −0.216 (0.625) |
P value | 0.063 | 0.044 | 0.463 |
Total | |||
Recurrent wheeze | |||
No (n=215) | 91.4 (12.1) | 90.3 (14.6) | −0.022 (0.600) |
Yes (n=762) | 87.7 (14.1) | 86.1 (16.6) | −0.078 (0.629) |
P value | <0.001 | 0.001 | 0.244 |
Dyspnoea | |||
No (n=738) | 89.5 (13.5) | 87.5 (16.1) | −0.093 (0.626) |
Yes (n=239) | 85.4 (14.0) | 85.6 (16.8) | 0.019 (0.609) |
P value | <0.001 | 0.107 | 0.016 |
Longstanding cough | |||
No (n=534) | 88.9 (13.9) | 87.5 (16.2) | −0.058 (0.589) |
Yes (n=443) | 88.0 (13.5) | 86.5 (16.3) | −0.075 (0.663) |
P value | 0.272 | 0.326 | 0.664 |
Productive cough | |||
No (n=631) | 89.3 (13.4) | 88.2 (15.4) | −0.048 (0.614) |
Yes (n=346) | 86.9 (14.3) | 84.9 (17.6) | −0.098 (0.639) |
P value | 0.008 | 0.003 | 0.235 |
Results presented as Mean (SD) and p values from t-test, presented in bold when p<0.05
Pre-BD = pre-bronchodilatation
FEV1, forced expiratory volume in 1 s; Pre-BD, pre-bronchodilatation.