“…Authors, Sample Sizes, Data Collection Methods, Assessment Factors, Retrieved Data (Pre, Post, Control, Treatment), and Effectiveness of Selected Studies of Traditional Tools 18% (Spangenberg et al, 2002) Not Mentioned Supervisor-report (Injury Register) Injury Rate Reduction 25% reduction 25% (Gilkey et al, 2003) Self-report (Questionnaire) Behaviour Alteration 71.8% 76.8% 5% (Darragh et al, 2004) Not Mentioned Supervisor-report (Injury Register) Injury Rate Reduction 1,478 injuries in 16,946,918 hours 493 injuries in 6,706,046 hours 15.5% (Hong et al, 2006) Self-report (Questionnaire) Behaviour Alteration 50% 57% 7% (Kerr et al, 2007) Self-report (Questionnaire) Behaviour Alteration 42% 50% 8% (Neitzel et al, 2008) Self-report (Questionnaire) Behaviour Alteration 29.2% 57.1% 27.9% (Bena et al, 2009) Supervisor-report (Injury Register) Injury Rate Reduction 6% reduction 6% (Sokas et al, 2009) Self As can be seen from Table 2, almost all of the selected studies indicated the size of the samples included in their experiments, excepting two studies in which no such information was provided (Darragh et al, 2004;Spangenberg et al, 2002). The sample size varied greatly among the selected studies, ranging from 23 (Neitzel et al, 2008) to 2795 workers (Bena et al, 2009) (Column 'Sample Sizes', Table 2).…”