Fig. 3From: Supraglottic jet oxygenation and ventilation decreased hypoxemia during gastrointestinal endoscopy under deep sedation at high altitudes: a randomized clinical trialThe primary outcome was adjusted for the baseline characteristics. Stratification variable: Upper endoscopy or colonoscopy; demographic characteristics: age, sex, ethnic group (Tibetan/Zang or not), body mass index, clinical characteristics, history of obstructive sleep apnea-hypopnea syndrome, erythrocytosis, and original hypoxia before oxygenation. RR, risk ratio; CI, confidence interval; SJOV, supraglottic jet oxygenation and ventilationBack to article page