Table 2

Baseline data by area of residence

  • IQR = interquartile range; FEV1 = forced expiratory volume in one second; PEF = peak expiratory flow; AQLQ = Asthma Quality of Life questionnaire; HAD = Hospital Anxiety and Depression scale.

  • BTS guidelines treatment step: step 1 = no β agonist or β agonist prn; step 2 = β agonist prn plus low dose steroids; step 3 β agonist prn plus high dose inhaled steroids or low dose inhaled steroids plus long acting β agonist; step 4 = high dose inhaled steroids and regular β agonist; step 5 = addition of regular steroid tablets.