highly significantp value < 0.001
Correlation analysis of perception-related constructs and other variables Kendall’s correlations were highly significant between constructs C1 and C2, C1 and C3, C2 and C3, C3 and C5, and C4 and C5, with a p value < 0.001 in each case, whereas there was no significant correlation of qualification with experience (p value 0.681), site of work (p value 0.386) and working hours per week (p value 0.153).