Table 1 Participant characteristics overall in SLS COPD and in the follow-up interviews (post-hoc)

From: Salford Lung Study in chronic obstructive pulmonary disease (SLS COPD): follow-up interviews on patient-centred outcomes

 

Total SLS COPD participants (N = 2600)

Follow-up interview participants (N = 400)

Extended interview participants (N = 40)

Demographic characteristics

   

 Mean age, years (SD)

   

  At start of SLS COPD

66.6 (9.8)

65.2 (9.3)

66.0 (8.4)

  At entry into follow-up interview study

N/A

66.2 (9.3)

67.0 (8.4)

 Male, n (%)

1322 (50.8)

215 (53.8)

21 (52.5)

 Relationship status, n (%)

   

  Cohabitinga

N/A

225 (56.3)

24 (60.0)

  Single or divorced/separated or widowed/surviving partner

 

173 (43.3)

16 (40.0)

  Other

 

2 (0.5)

0

 Employment status, n (%)

   

  Working full time

N/A

27 (6.8)

3 (7.5)

  Working part time

 

13 (3.3)

0

  Voluntary or charity work

 

5 (1.3)

2 (5.0)

  Long-term sick leave

 

20 (5.0)

3 (7.5)

  Retired

 

268 (67.0)

25 (62.5)

  Unemployed or homemaker

 

49 (12.3)

3 (7.5)

  Other

 

18 (4.5)

4 (10.0)

COPD exacerbations

   

 Number of exacerbations in year prior to SLS COPD, n (%)

   

  0

493 (19.0)

80 (20.0)

4 (10.0)

  1

844 (32.5)

108 (27.0)

10 (25.0)

  ≥2

1263 (48.6)

212 (53.0)

26 (65.0)

 Number of exacerbations during the SLS COPD, n (%)

   

  0

773 (29.7)

125 (31.3)

11 (27.5)

  1

685 (26.3)

93 (23.3)

9 (22.5)

  ≥2

1142 (43.9)

182 (45.5)

20 (50.0)

  1. N/A not available, SD standard deviation, SLS COPD Salford Lung Study in patients with chronic obstructive pulmonary disease
  2. aMarried/living as married/civil partnership