| Social traits | Frontline (N=11)n (%) | Middle (N=10)n (%) | Senior (N=6)n (%) | Mean (N=27)n (%) |
|---|---|---|---|---|
| Personality | 7 (60) | 8 (80) | 4 (70) | 19 (70) |
| Interaction | 7 (60) | 8 (80) | 4 (60) | 19 (70) |
| Work ethics | 4 (40) | 7 (70) | 4 (70) | 15 (55) |
| Mental Ability | 3 (30) | 6 (60) | 2 (40) | 11 (40) |
| Commitment | 2 (20) | 6 (60) | 2 (40) | 10 (37) |