Table 1 Characteristics of patients with COPD in both study 1 (N=243) and study 2 (N=244)

From: Patient-reported outcomes in primary care patients with COPD: psychometric properties and usefulness of the Clinical COPD Questionnaire (CCQ). A cross-sectional study

 

Study 1: exploratory factor analysis

Study 2: confirmatory factor analysis

Characteristics

N

%

Mean

s.d.

Range

N

%

Mean

s.d.

Range

P value

Demographics

 Sex

          

0.26

Male

147

62

   

162

66

    

Female

92

38

   

82

34

    

 Age

  

67

10.7

35–88

  

67

9.8

33–87

0.95

 Marital status

          

0.75

With partner

187

77

   

183

75

    

Widowed

27

11

   

28

12

    

Single

29

12

   

32

13

    

 Education level

          

0.71

Low

152

63

   

150

62

    

Middle

60

25

   

66

28

    

High

27

11

   

25

10

    

Life style

 Any smoking

117

49

   

135

57

   

0.09

  1. Abbreviation: COPD, chronic obstructive pulmonary disease.
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