“…There were 40 studies which reported on data regarding stress, using five different type of scales which were Depression-Anxiety-Stress Scale-21 (DASS-21), Safety Attitudes Questionnaire (SAQ), Perceived Stress Scales (PSS), Stanford Acute Stress Reaction Questionnaire (SASRQ), and State and Trait Anxiety Inventory (STAI) [ 30 , 31 , 39 , 56 , 59 , 77 , 78 , 91 , 92 , 99 – 102 , 104 , 106 , 107 , 113 , 120 , 123 , 124 , 127 , 129 – 133 , 138 , 140 , 141 , 143 , 144 , 150 , 152 , 153 , 155 , 160 , 161 , 164 , 165 ].…”