he paired t-test showed significant differences in mean scores before and after intervention in: work pace (p = 0.002), influence at work (p = 0.005), meaning of work (p = 0.001), predictability (p = 0.001), rewards (p = 0.001), role conflicts (p = 0.001) and social support from supervisor (p = 0.001).
control
baseline
any of the scales of the Thai version of the COPSOQ questionnaire