Patients were aged between 4 and 12 years, had a clinical history of asthma, and were already receiving bronchodilator therapy. 305 children were recruited into the trial. 3 were excluded in the screening period, and another 77 patients withdrew and received no study treatment (7 because of adverse events, 9 because of non-compliance and the remaining 62 because of failing to meet the study criteria - note that 1 patient was recorded in 2 exclusion criteria hence the total of 78). Among the remaining 225 patients, 110 were randomised to receive fluticasone propionate and 115 to receive sodium cromoglycate.