Table 1. Mean Stress in a Four-Area Questionnaire Before and After Training.

Area	Mean Stress Before	Mean Stress After	Paired t Test
Safety policy	60.00 ± 17.4	38.83 ± 12.2	P < 0.001
Occupational safety	72.34 ± 23.2	45.94 ± 14.9	P < 0.001
Contact-care	60.80 ± 14.0	40.91 ± 12.8	P < 0.001
Mental-environment condition	66.62 ± 19.3	49.94 ± 14.8	P < 0.001
General stress	64.94 ± 15.6	43.91 ± 10.7	P < 0.001