Six intragastric balloons: Which to choose?

Table 2 Representative studies of the effectiveness of intragastric balloons

Ref.	Study type	Cases	Balloon type	Mo	Mean BMI loss kg/m2	Mean BWL kg	%TWL	%EWL
Genco et al[64], 2005	Observational	2515	Bioenterics	6	4.9 ± 12.7
Kotzampassi et al[13], 2012	Observational	500	Bioenterics	6	7.39 ± 3.57	21.19 ± 10.3		38.09 ± 20.18
Lopez-Nava et al[67], 2011	Observational	714	Bioenterics	6	6.5 ± 12.7	18.8 ± 9		41.6 ± 21.8
Fittipaldi-Fernandez et al[68], 2020	Observational	5874	air-filled	6		19.13 ± 8.86	18.42 ± 7.25	65.66 ± 36.24
Abu Dayyeh et al[71], 2019	Observational	187	Spatz3	9			14.9 ± 7.2 plus 4.7*
Fittipaldi-Fernandez et al[45], 2020	Observational	180	Spatz3	7.12 ± 1.63	6.18 ± 4.07	17.51 ± 11.67	16.22 ± 9.74	56.68 ± 40.12
Schwaab et al[72], 2020	Cross-sectional	360/144	Orbera/Spatz3	6 up to 12			15.4 ± 7/15.5 ± 9.6
Sullivan et al[73], 2018	RCT	185/181	Obalon/sham	6			6.6 ± 5.1/3.4 ± 5.0
Ienca et al[58], 2020	Observational	1770	Elipse	4	4.9 ± 2.0	13.5 ± 5.8	14.2 ± 5.0	67.0 ± 64.1
Genco et al[59], 2018	Observational	38	Elipse	4	4.2	12.7	11.6	26
Taha et al[77], 2020	Observational	96	Elipse	4	4.9 ± 2.0	11.2 ± 5.1	12.1 ± 5.2
Ponce et al[47], 2015	RCT	187/139	ReShapeDuo diet/exercise	6				25.1 ± 1.6/11.3 ± 1.9
Agnihotri et al[50], 2018	Observational	202	ReShapeDuo	6		11.7 ± 7.3	11.4 ± 6.7	29.9 ± 18.2

BMI: Body mass index; %TWL: Percentage total weight loss; %EWL: Percentage excess weight loss; RCT: Randomised controlled trial.