Table 1

Baseline characteristics of all patients and patients with and without at least one symptom based exacerbations

Characteristics

All patients

No symptom-based exacerbation

At least one symptom-based exacerbation


Number of patients

121

46

75

Sex, male

74 (61.2)

27 (58.7)

47 (62.7)

Age, yr

67.4 ± 10.5

68.6 ± 11.3

66.6 ± 9.9

FEV1

1.29 ± 0.58

1.42 ± 0.68

1.20 ± 0.50§

FEV1 % predicted

47.7 ± 18.5

53.7 ± 18.6

44.0 ± 17.6

Charlson's comorbidity index score

1 [0-2]

1 [0-2]

1 [0-2]

Current smoking

28 (23.1)

8 (17.4)

20 (27.0)

Recruitment

Scheduled outpatient clinic visit

83 (86.6)

30 (36.1)

53 (63.9)

Scheduled general physician visit

14 (11.6)

5 (35.7)

9 (64.3)

Discharge from hospital admission

24 (19.8)

11 (45.8)

13 (54.2)

Hospital admissions 1yr prior to study

-0

68 (56.2)

25 (54.3)

43 (57.3)

-1

32 (26.4)

15 (32.6)

17 (22.7)

-2 or more

21 (17.4)

6 (13.1)

15 (20.0)

Home oxygen therapy

12 (9.9)

5 (10.9)

7 (9.3)


Data are expressed as mean ± SD, median [IQR] or count (percentage). § p < 0.05; p < 0.01.

Trappenburg et al. BMC Pulmonary Medicine 2011 11:43   doi:10.1186/1471-2466-11-43

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