Confirmatory spirometry for adults hospitalized with a diagnosis of asthma or chronic obstructive pulmonary disease exacerbation

Table 2 Characteristics of patients according to spirometry quality*

Characteristic	Adequate quality	Inadequate quality	p-value
Characteristic	n = 83 (73%)	n = 30 † (27%)	p-value
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/m ²			0.50
<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.

ISSN: 1471-2466