Table 1 A comparison of demographic characteristics between the three groups

Age (Median (IQR)

33.50 (29.75- 36.00)

33.00 (27.00- 36.25)

32.00 (28.75–34.25)

Z = 1.33, P = 0.51^˄

Work experience (Median (IQR)

12.00 (8.50–14.00)

12.00 (6.00-14.50)

11.00(7.75–13.25)

Z = 0.41, P = 0.81 ^˄

Educational level (Associate degree/ MSc or above) [n(%)]

3(16.17)/ 15(83.3)

2(11.1)/16(88.9)

2 (11.10) /16 (88.90)

χ² = 0.46, P > 0.9^†