Percent recovery index (PRI) can effectively predict poor asthma control and exacerbations in adults, according to a study published in the Journal of Asthma and Allergy. Researchers analyzed 61 adults with asthma, measuring PRI at baseline, which was evaluated as a predictor of poor asthma control or exacerbation. The covariates included baseline lung function, previous exacerbation, sex, age, BMI, and smoking status. At 3 months, PRI was remeasured and compared with baseline PRI. The study team observed that baseline PRI was significantly correlated to poor asthma control (Asthma Control Test at 3 months, P=0.014), asthma exacerbation (P=0.023), decreased QOL (decrease of Mini Asthma Quality of Life Questionnaire, P=0.010) and cumulative number of ED visits or hospitalizations (P=0.039). No significant association was observed between baseline PRI and inflammation factors. Additionally, PRI was dramatically reduced after standard treatment for 3 months.
