Production Costs
SD
During 24 months of follow-up the mean number of sickness absence days were 206 (SD 160) and 250 (SD 158) for I-MORE and O-ACT, respectively, i.e., the number of working days were 316 (SD 160) for I-MORE and 272 (SD 158) for O-ACT. Consequently, the cost of production loss amounted to 69,982 euros (SD 54,339) for I-MORE and 84,707 euros (SD 53,532) for O-ACT ( p = 0.08, Table Sickness absence days were not normally distributed, and the cumulative medians were at one year for I-MORE 95 days (25th -75th percentile 44–151) vs. O-ACT 129 days (25th -75th percentile 64–213; p = 0.04), at two years: I-MORE: 161 (25th -75th percentile 61–342) vs. O-ACT 252 days (25th -75th percentile 106–380; p = 0.07).