Table 2: Study quality and overall quality of evidence. Quality level was based on the OCEBM Levels of Evidence Scale from 1-5, wherein level 1 represents the highest quality evidence and level 5 represents the lowest quality evidence. Overall grade of recommendation utilized a scale from "a" to "d" wherein "a" reflects consistent level 1 studies and "d" reflects consistent level 5 studies or troublingly inconsistent or inconclusive studies of any level.

Study Author Study Design Quality Level (1-5)
Cazzaniga, et al. [11] Randomized controlled trial 2
Cazzaniga, et al. [12] Randomized controlled trial 2
Collyer [13] Narrative review and author perspective 5
Corn, et al. [14] Case study 4
Loughrey, et al. [15] Narrative review and author perspective 5
Maxwell [16] Case study 4
Farber, et al. [17] Narrative review and author perspective 5
Overall grade of recommendation C