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Table 4 Spirometry in children hospitalised or not with acute bronchiolitis in infancy

From: Acute bronchiolitis in infancy as risk factor for wheezing and reduced pulmonary function by seven years in Akershus County, Norway

Age seven years Hospitalised group Not hospitalised group  
FVC (liters) RS- (n = 22) RS+ (n = 35) 95% CIe Both (n = 57) Ctr (n = 64) 95% CIe
Predicteda 1.78 1.76 -0.12 0.15 1.77 1.82 -0.04 0.14
Before salbutamol 1.65 1.65 -0.17 0.17 1.65 1.75 -0.02 0.19
After salbutamolc 1.69 1.69 -0.16 0.17 1.69 1.81 0.004 0.22
Reversibilityb 2.5 1.9 -2.3 3.6 2.1 3.3 -9.3 3.2
FEV 1 (liters)
Predicteda 1.51 1.50 -0.10 0.12 1.51 1.54 -0.04 0.11
Before salbutamolc 1.50 1.51 -0.16 0.13 1.50 1.64 0.05 0.23
After salbutamol 1.57 1.59 -0.16 0.11 1.59 1.70 0.03 0.20
Reversibilityb 4.9 5.6 -4.0 2.6 5.3 5.6 -3.5 3.9
FEF 50 (liters/min)
Predicteda 2.34 2.33 -0.12 0.14 2.33 2.36 -0.07 0.13
Before salbutamold 1.92 1.99 -0.35 0.20 1.96 2.28 0.15 0.49
After salbutamold 2.17 2.34 -0.43 0.10 2.28 2.56 0.11 0.46
Reversibilityb 11.7 14.5 -10.0 4.3 13.4 9.6 -9.2 1.6
  1. a According to European Respiratory Society 1993 Update
  2. b Percent improvement 10 minutes after inhalation of 0.2 mg salbutamol
  3. c P < 0.05 with independent samples T-test between the hospitalised group and not hospitalised group
  4. d P < 0.01 with independent samples T-test between the hospitalised group and not hospitalised group
  5. e 95% confidence interval (CI) of difference between means