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Table 2 MCID response rate and exacerbation of patient during the one-year visit according to sleep quality

From: The impact of impaired sleep quality on symptom change and future exacerbation of chronic obstructive pulmonary disease

Variables

Total

N = 461

Bad sleeper

N = 228

Good sleeper

N = 233

P-value

CAT at 6th montha

10.7 ± 6.1

13.6 ± 5.6

7.9 ± 4.7

<0.001

Change in CATc

1(8)

0(9)

2(6)

0.021

MCID of CAT b

    

 Yes

224(48.6)

93(40.8)

131(56.2)

0.001

 No

237(51.4)

135(59.2)

102(43.6)

 

Exacerbations

in the one yearc

0(1)

0(1)

0(0)

<0.001

Exacerbation

in the one year b

   

<0.001

 Yes

181(39.3)

108(47.4)

73(31.3)

 

 No

280(60.7)

120(52.6)

160(68.7)

 

Severe exacerbation in the one year b

   

0.017

 Yes

117(25.4)

69(30.3)

48(20.6)

 

 No

344(74.6)

159(69.7)

185(79.4)

 

Frequent exacerbation in the one year b

   

0.008

 Yes

65(14.1)

42(18.4)

23(9.9)

 

 No

396(85.9)

186(81.6)

210(90.1)

 
  1. aMean ± SD; bCounts with percentage are indicated; cMedian (IQR)
  2. Abbreviations: CAT, COPD Assessment Test; MCID, minimum clinically important difference.