The variables that were employed in the study were either level 1 variables or level 2 variables, with the level 2 variables restricted to control climate and current support. The following table shows the classification of the variables identified and used for the study.The dependent variables (DV) in the study pertained to depression, anxiety and stress. These variables were assessed using the Depression Anxiety and Stress Scale. The independent variables (IV) in the research were the intensity of critical incident involvement and posttraumatic distress. The critical incident involvement variable was assessed in the study using the critical incident inventory method while the variable of posttraumatic distress was assessed using the Impact of Event Scale Revised. The moderating variables (MV) in the study were the current unit control climate and current supervisory support climate. The current unit control climate was assessed through the Bacharach, Bamberger, Conley, and Bauer’s instrument, while the posttraumatic distress was assessed on a 1 to 4 scale of ‘not at all’ and ‘very often’. The control variables (CV) in the study were Age, marital status, education level, social desirability bias and respondent bias. The level based scale was used to gather the information, while the Balanced Inventory of Desirable Responding scale was used to assess the social desirability bias variable.
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