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Table 2 Comparison of impulse oscillometry and spirometry over subtypes at the baseline (Pre) and after treatment (Post)

From: Comparison of therapeutic effects of inhaled corticosteroids on three subtypes of cough variant asthma as classified by the impulse oscillometry system

 

Subtypes

 

Post-hoc test

Central

Peripheral

Resistless

‡P

C-P

C-R

P-R

Impulse oscillometry

 R5 (kPa/L/s)

  Pre

0.36 (0.01)

0.36 (0.01)

0.22 (0.01)

**

NS

**

*

  Post

0.29 (0.01)

0.31 (0.01)

0.21 (0.01)

    

  †P

**

*

NS

    

 R20 (kPa/L/s)

  Pre

0.33 (0.01)

0.25 (0.01)

0.20 (0.01)

**

**

**

**

  Post

0.28 (0.01)

0.24 (0.01)

0.19 (0.01)

    

  †P

**

NS

NS

    

 R5-R20 (kPa/L/s)

  Pre

0.03 (0.01)

0.11 (0.01)

0.03 (0.01)

**

**

NS

**

  Post

0.02 (0.01)

0.07 (0.01)

0.02 (0.01)

    

  †P

NS

**

NS

    

 X5 (kPa/L/s)

  Pre

−0.12 (0.01)

−0.15 (0.01)

−0.10 (0.01)

**

**

NS

**

  Post

−0.11 (0.01)

−0.13 (0.01)

−0.09 (0.01)

    

  †P

NS

NS

NS

    

 Fres (Hz)

  Pre

11.5 (0.5)

16.7 (0.3)

11.2 (0.3)

**

**

NS

**

  Post

10.3 (0.3)

14.6 (0.5)

10.8 (0.3)

    

  †P

*

**

NS

    

 AX (kPa/L)

  Pre

0.32 (0.03)

0.78 (0.08)

0.25 (0.02)

**

**

NS

**

  Post

0.24 (0.02)

0.53 (0.07)

0.21 (0.01)

    
 

**

**

**

    

Spirometry

 %FVC

  Pre

100.6 (2.4)

104.0 (2.0)

105.0 (1.6)

    

  Post

102.8 (2.4)

107.6 (2.2)

107.1 (1.6)

    

  †P

NS

NS

NS

    

 %FEV1

  Pre

99.4 (2.2)

101.9 (2.3)

103.1 (1.4)

    

  Post

103.3 (2.3)

106.2 (2.5)

106.2 (1.5)

    

  †P

NS

NS

NS

    

 FEV1/FVC

  Pre

85.3 (1.2)

81.7 (0.8)

83.5 (0.8)

*

*

NS

NS

  Post

86.9 (1.2)

82.1 (0.8)

84.3 (0.7)

    

  †P

NS

NS

NS

    

 %MMEF

  Pre

80.7 (4.0)

73.0 (3.4)

82.9 (2.5)

    

  Post

90.2 (4.4)

78.8 (3.7)

90.9 (2.9)

    

  †P

NS

NS

*

    

 %PEF

  Pre

100.8 (2.3)

105.6 (3.0)

112.4 (1.8)

**

NS

**

*

  Post

113.2 (2.4)

119.8 (3.3)

123.4 (2.7)

    

  †P

**

**

**

    
  1. The data are shown as mean (SEM). Differences between the baseline and after treatment were analyzed by a paired t-test (†P). Differences among subtypes were tested by nonrepeated ANOVA (‡P) with the Student–Newman–Keuls test (Post-hoc test). C-P: between central type and peripheral type; C-R: between central type and resistless type; P-R: between peripheral type and resistless type. *: p < .05, **: p < .01 and NS: not significant