Comparison 2. Subgroup analysis: Diaphragm‐triggered non‐invasive versus nasal intermittent positive pressure ventilation (NIPPV).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Failure of modality	1	16	Risk Ratio (M‐H, Fixed, 95% CI)	0.33 [0.02, 7.14]
2 Gastrointestinal perforation	1	16	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3 Pulmonary air leak	1	16	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4 Maximum FiO2	1		Mean Difference (Fixed, 95% CI)	‐4.29 [‐5.47, ‐3.11]
5 Maximum Edi signal	2		Mean Difference (Fixed, 95% CI)	‐1.75 [‐3.75, 0.26]
6 Respiratory rate	2		Mean Difference (Fixed, 95% CI)	7.22 [0.21, 14.22]