question: Compared to (A) a conventional extubation protocol (control group) what was the result of (B) the Mechanical insufflation-exsufflation (MI-E) extubation protocol (study group) on the reintubation rates related to noninvasive ventilation (NIV) failure?
context: Considering this subgroup of patients, the reintubation rates related to NIV failure were significantly lower in the study group when compared with controls; two patients (6%) versus 13 (33%); P < 0.05, respectively.