“…For studies with quantitative designs, the Quality Assessment and Validity Tool for Correlation Studies was used (Cummings et al, 2008;Estabrooks et al, 2001;Estabrooks, Floyd, ScottFindlay, O'Leary, & Gushta, 2003). This instrument includes 12 items to evaluate the design, sample, measurement, and statistical analysis for quantitative observational studies, with a total of 12 possible points.…”