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. 2011 Apr 26;12:81. doi: 10.1186/1471-2474-12-81

Table 4.

Risk ratios for sickness absence of more than 30 days for the MPI-S subgroups, estimated by modified Poisson regression

ID DYS


RR CI (95%) RR CI (95%)
0-18 months 2.086* 1.065 - 4.085 3.278* 1.715 - 6.266
19-36 months 1.689 0.957 - 2.979 1.900 0.987 - 3.657

*Significant at the 5% level, where more than 30 days of sickness absence is outcome and 30 days or less is the reference category.

AC is the reference of the explanatory variable.