“…Sixteen of 31 studies (52%) were purely quantitative [8][9][10][11][12][13][17][18][19]21,23,25,28,29,31,32], while an additional six studies used qualitative methods as part of a mixed-methods design [14,15,20,22,30,38]. Surveys were the most common instrument used to collect data through randomized control trials (n=5) [8,12,18,21,28], cluster randomized control trials (n=6) [9,19,23,25,29,31], cross-sectional cohort studies (n=3) [11,17,32], and controlled cohort studies (n=1) [10]. In the eight mixed-methods and six qualitative-only evaluations [16,21,24,26,27,33], the most popular methods employed were in-depth interviewing (n=7) [14,16,20,…”