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. 2021 Jul 18;8(1):e000981. doi: 10.1136/bmjresp-2021-000981

Table 3.

FEV1 at study entry, follow-up and annual decline by number of respiratory symptoms among women, men and all participants

FEV1pp pre-BD at study entry FEV1pp pre-BD at follow-up Annual decline in FEV1pp
Women
 None or 1 symptoms n=206 92.3 (11.8) 92.8 (15.1) 0.040 (0.580)
 2 symptoms n=157 89.5 (12.7) 90.2 (15.2) 0.048 (0.611)
 3 symptoms n=127 88.8 (12.8) 87.9 (16.0) −0.035 (0.666)
 4 symptoms n=55 85.5 (13.4) 87.0 (15.8) 0.084 (0.550)
 P value 0.001 0.011 0.553
Men
 None or 1 symptoms n=216 89.2 (14.1) 85.0 (14.8) −0.207 (0.583)
 2 symptoms n=110 84.6 (14.4) 83.2 (15.3) −0.044 (0.670)
 3 symptoms n=87 83.1 (16.1) 78.0 (19.0) −0.287 (0.606)
 4 symptoms n=19 83.3 (15.0) 79.0 (19.3) −0.303 (0.772)
 P value 0.002 0.005 0.031
Total
 None or 1 symptoms n=422 90.7 (13.1) 88.8 (15.4) −0.086 (0.594)
 2 symptoms n=267 87.5 (13.6) 87.3 (15.6) 0.010 (0.636)
 3 symptoms n=214 86.5 (14.5) 83.8 (17.9) −0.137 (0.652)
 4 symptoms n=74 84.9 (13.7) 84.9 (17.0) −0.016 (0.632)
 P value <0.001 0.002 0.052

Results presented as mean (SD) and p values from ANOVA in bold figures indicate p<0.05.

Included respiratory symptoms: recurrent wheeze, dyspnoea, longstanding cough, productive cough.

ANOVA, analysis of variance; FEV1, forced expiratory volume in 1 s; Pre-BD, pre-bronchodilatation.