Table 1 Characteristics of participants who have performed home spirometry, obtained by self-reported questionnaire.

From: Feasibility, quality and added value of unsupervised at-home spirometry in primary care

Characteristic

Participants

N

125

Sex=Male, n (%)

46 (36.8)

Age, years (median [IQR])

45.0 [32.0, 63.0]

Height, cm (mean (SD))

173.1 (9.4)

BMI, kg/m2 (mean (SD))

26.7 (5.3)

Smoking status, available n (%)

106 (84.8)

 Current smoker

15 (12.0)

 Ex-smoker

40 (32.0)

 Never smoker

51 (40.8)

Age of onset of respiratory symptoms, available n (%)

92 (73.6)

 Continuous, median [IQR]

19.0 [7.0, 46.2]

Categorical, n (%)

 <20

46 (36.8)

 20–39

17 (13.6)

 40–59

19 (15.2)

 ≥60

10 (8.0)

Previously known diagnosis, available n (%)

98 (78.4)

 Asthma (%)

50 (40.0)

 COPD (%)

9 (7.2)

 Asthma & COPD (%)

7 (5.6)

 No Asthma or COPD (%)

32 (25.6)

Breathlessness, available n (%)

91 (72.8)

 Breathlessness (mMRC≥2) (%)

14 (11.2)

 No breathlessness (mMRC<2) (%)

77 (61.6)

CCQa in patients with COPD, available n (%)

15 (93.8)

 Mean (SD)

1.36 (0.8)

ACQb in patients with asthma, available n (%)

50 (87.7)

 Mean (SD)

0.98 (0.7)

Exacerbations last yearc, available n (%)

92 (73.6)

 0 (%)

75 (60.0)

 1 (%)

9 (7.2)

 ≥2 (%)

8 (6.4)

  1. IQR interquartile Range, SD standard deviation, BMI body mass index.
  2. aClinical COPD questionnaire.
  3. bAsthma control questionnaire.
  4. cSelf-reported question: In the last 12 months, how often did you have an antibiotic or prednisolone course due to increased respiratory symptoms, such as cough and/or shortness of breath?.