Our survey definitions of GINA asthma control are summarized in Table 1. The presence of daytime symptoms was determined from our original survey data, and the ACT-J questions were used to gauge the limitations of activities and need for reliever rescue
treatment. The presence of nocturnal symptoms awaking was derived from both our original survey data and the ACT-J question. The decline in lung function was determined from the PEFM value. Patients who reported few attacks during the last year and no attacks during the 2 weeks prior to the survey were judged to have no asthma exacerbation, while
patients reporting seasonal or persistent attacks with no attacks during the 2 weeks prior to the survey were considered to have had 1 or more exacerbations in the last year. Patients who reported asthma attacks during the 2 weeks prior to the survey were judged as having had 1 or more exacerbations in the last 2 weeks. Based on these criteria, patients were classified as having controlled, partly controlled, or uncon ACT-J as a Predictor of GINA Control