1. Volume 151, Issue 4, Pages 764-775 (April 2017)
Can High-flow Nasal Cannula Reduce the Rate of Endotracheal Intubation in Adult Patients With Acute Respiratory Failure Compared With Conventional Oxygen Therapy and Noninvasive Positive Pressure Ventilation? 
Yue-Nan Ni, MM, Jian Luo, MD, He Yu, MD, Dan Liu, MD, Zhong Ni, MD, Jiangli Cheng, MD, Bin-Miao Liang, MD, Zong-An Liang, MD 
CHEST 
Volume 151, Issue 4, Pages (April 2017)
DOI: /j.chest
Copyright © 2017 American College of Chest Physicians Terms and Conditions

2. Figure 1
Study flow.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

3. Figure 2
Risk of bias.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

4. Figure 3 Risk of bias summary.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

5. Figure 4
Publication bias. COT = conventional oxygen therapy; HFNC = high-flow nasal cannula; NIPPV = noninvasive positive pressure ventilation.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

6. Figure 5
Endotracheal intubation. M-H = Mantel-Haenszel. See Figure 4 legend for expansion of other abbreviations.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

7. Figure 6
ICU mortality. See Figure 4 and 5 legends for expansion of abbreviations.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions

8. Figure 7
ICU length of stay. IV = inverse variance. See Figure 4 legend for expansion of other abbreviations.
CHEST  , DOI: ( /j.chest )
Copyright © 2017 American College of Chest Physicians Terms and Conditions