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Table 3 Univariate analysis of variables associated with average decline of FEV1, % predicted

From: Obstructive sleep apnoea accelerates FEV1 decline in asthmatic patients

Parameter beta Standard error 95% CI p value
Age −0.053 0.020 −0.093 to − 0.012 0.011
ESS −0.280 0.085 −0.323 to 0.021 0.084
BMI −0.077 0.056 −0.189 to 0.036 0.178
Current smoke −1.173 0.599 −2.367 to 0.021 0.054
AHI −0.033 0.009 −0.052 to − 0.014 0.001
ODI −0.035 0.010 −0.056 to −0.015 0.001
SaO2 < 90% (%) −0.014 0.015 −0.043 to 0.015 0.347
SaO2 < 80% (%) −0.091 0.094 −0.280 to 0.097 0.336
ICS −0.091 1.646 −4.581 to 1.977 0.432
ER visit, n/year −0.941 0.470 −1.877 to − 0.005 0.049
  1. Abbreviations: ESS epworth sleepiness scores, BMI body mass index, AHI apnoea-hypopnoea index, ODI oxygen desaturation index, ICS inhaled corticosteroid, ER emergency department