As a general rule, always check the concentration of the B12 preparation and calculate the volume you need
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In the semaglutide arm only, other non-prespecified baseline variables (age, ethnicity, diabetes status, sex, type of surgery, time since surgery (months), meal-stimulated change in GLP-1 at baseline, postoperative %WL (from DOS to randomization)) and maximum %WL achieved after surgery or MBS response (weight regain versus suboptimal post-surgery weight loss) were added to the primary outcome linear regression model for the semaglutide arm only (therefore omitting the treatment allocation covariate) to assess their relationship with %WL induced by semaglutide at 68 weeks
The answer to that question depends on why you want to use it
Supplementary material The Supplementary Material for this article can be found online at: References 1 CostelloEJErkanliAAngoldA