The difference between preintervention and postintervention in the proportion of people who were absent was compared by using a chi-square test (Table 4). The chisquare test results indicated an overall reduction in the proportion of people who were absent from work during the postintervention. Specifically, there was an overall reduction in the number of people who missed more than 4 entire workdays, and an overall increase in the number of people who were not absent in the postintervention. There also were significant reductions in the proportion of people who missed half days at work, and overall increases in the number of people who were not absent for full workdays in the last 4 weeks, and those who indicated that they did not need to attend work early and leave work late.