Document Classification

Section Type: RESULTS

Text: As compared with standard oxygen therapy, noninvasive ventilation was associated with greater mean improvements at 1 hour after the beginning of treatment in patient-reported dyspnea (treatment difference, 0. 7 on a visual-analogue scale ranging from 1 to 10 ; 95 % confidence interval [CI], 0. 2 to 1. 3 ; P = 0. 008), heart rate (treatment difference, 4 beats per minute ; 95 % CI, 1 to 6 ; P = 0. 004), acidosis (treatment difference, pH 0. 03 ; 95 % CI, 0. 02 to 0. 04 ; P < 0. 001), and hypercapnia (treatment difference, 0. 7 kPa [5. 2 mm Hg] ; 95 % CI, 0. 4 to 0. 9 ; P < 0. 001).