Attendance was a problem for the swing shift at Avondale Industries$$ Long Beach, California, site during the summer. The supervisors asked for the training and development office to provide a training session on attendance and why it is important for the company. The trainer who designed the program included four parts:

Shared the written attendance policy

Set clear attendance expectations as articulated by the supervisors and how the company was impacted by unplanned absences

Reminded the employees of the bonus that was given at the end of the year for those who had no unplanned absences

Listed the employee support resources for those experiencing personal problems that impacted their attendance

The goal of the training was to reduce absenteeism by $50$ percent and increase production by $15$ percent. Two months following the training, the trainer contacted the swing shift supervisors to see if improvements had been made. The supervisors reported that absenteeism was reduced by $68$ percent, and their production rate had increased by $21$ percent. What conclusion can be drawn from these results?