Table 2

Characteristics of patients according to spirometry quality*
Characteristic Adequate quality Inadequate quality p-value
n = 83 (73%) n = 30 † (27%)
Physician diagnosis
Asthma exacerbation 47 (78%) 20 (22%) 0.23
COPD exacerbation 36 (70%) 10 (30%)
Age, years
<35 14 (70%) 6 (30%) 0.91
35-64 53 (75%) 18 (25%)
≥65 16 (73%) 6 (27%)
Female 57 (73%) 21 (27%) 0.50
BMI, kg/m2
<18.5 (Underweight) 5 (71%) 2 (29%) 0.82
18.5-24.9 (Normal) 16 (73%) 6 (27%)
25-29.9 (Overweight) 17 (81%) 4 (19%)
≥30 (Obese) 45 (71%) 18 (29%)
Median days from hospital admission to spirometry testing (IQR) 1 (1 to 2) 1 (0 to 2) 0.06

Values above represent n (row %), unless otherwise specified.

Abbreviations: IQR Interquartile range.

* Due to rounding, percentages may not add to 100%.

† Includes spirometry tracings in which one (n = 25, 22%) or both (n = 22, 19%) raters graded the effort as not acceptable or not reproducible based on ERS/ATS criteria.

Prieto Centurion et al.

Prieto Centurion et al. BMC Pulmonary Medicine 2012 12:73   doi:10.1186/1471-2466-12-73

Open Data