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. 2014 Dec 19;14:207. doi: 10.1186/1471-2466-14-207

Table 1.

Descriptive statistics of demographic and clinical assessments at visit 1 (sample size N = 66)

Count/Median Percentage/ IQR (25 th -75 th percentile) Count N
Age (years) 59.9 49.2 – 65.7 66
Female 34 52% 66
Age of asthma diagnosis (years) 18.5 6.0 – 42.0 66
Currently Employed 43 65% 66
Ex-smoker 19 29% 66
Ex-smoker Pack years 1.7 0.50 – 5.00 19
Atopic asthma 50 76% 66
Past 12 months unscheduled doctors visit 38 58% 66
Past 12 months oral corticosteroids 28 42% 66
Past 12 months hospitalisation 5 8% 66
Asthma control score (ACQ) 1.41 1.00 – 2.14 66
Quality of Life Total Score 5.71 4.81 – 6.44 66
FEV1% predicted 69.4 53.0 – 82.4 66
FEV1/FVC 66.7 58.0 – 76.0 66
ICS dose/1000 (mg/day) 2 1 – 2 65
PD15 4.84 1.39 – 14.26 42
Dose response slope* 2.59 0.76 – 5.59 53

Count and percentage displayed for categorical variables and median and IQR otherwise.

Inhaled corticosteroids normalisation: 1 μg beclomethasone = 1 μg budesonide = 0.5 μg fluticasone.

PD15: provocation dose causing fall in FEV1 of ≥15% from baseline.

*Dose response slope: % fall FEV1/mL 4.5% saline.