Figure 1: Standardized Tenacity Score Equation
TSS = Standardized Tenacity Score. TSR = Reported mean tenacity score. m = Reported tenacity score scale size. n = Sample size. Subscripts denote study number.
Figure 2: PRISMA Diagram of Study Extraction and Inclusion
Full-text articles excluded for wrong study design.4, 38, 39
Full-text articles excluded for wrong language.40