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Table 4 The effect size and bias reduction

From: Long acting β2-adrenocepter agonists are not associated with atrial arrhythmias after pulmonary resection

  β2-agonists group Control group      
Logistic regression analysis
  n = 71 n = 103 Difference of means Standard error P-value Effect size Bias reduction
Age 71.4 ± 7.3 70.7 ± 8.6 0.7 0.86 0.52 0.82  
VC, % predicted 94.9 ± 14.6 98.0 ± 16.7 −3.1 1.69 0.19 1.84  
FEV1, % predicted 69.6 ± 15.1 79.0 ± 17.0 −9.4 1.73 <0.001 5.42  
FEV1/FVC, % 57.9 ± 8.6 62.9 ± 6.8 −5.0 0.85 <0.001 5.92  
Logistic regression analysis adjusted propensity score
  n = 67 n = 67      
Age 71.4 ± 7.4 70.5 ± 8.5 0.9 0.97 0.50 0.93 113.4
VC, % predicted 95.7 ± 14.2 97.6 ± 16.9 −1.9 1.90 0.47 1.00 54.5
FEV1, % predicted 70.6 ± 14.9 75.0 ± 17.0 −4.4 1.95 0.11 2.26 41.6
FEV1/FVC, % 58.2 ± 8.6 60.2 ± 7.0 −2.0 0.95 0.14 2.10 35.5
Mean of bias reduction 61.3
  1. Abbreviations: FEV 1 forced expiratory volume in 1 s, FVC forced vital capacity, VC vital capacity