Table 2

Cluster level analyses (OP level; n=33) on absenteeism in intervention and control groups

Total (n=33)
Intervention group (n=17)Control group (n=16)p value
Time to return to work: period between onset of sickness leave and first return to work (most of the time partial).
Time to full return to work: period between onset of sickness leave and full return to work.
Duration of sickness leave: number of days lost until full return to work with a correction for partial return.
Time to recurrence: period between full return to work and recurrence of sick leave for any reason.
Incidence of recurrence: number of recurrences in a period until 12 months from full return to work.
p value from multivariate (Cox) analyses with cluster size as covariate.
Return to work rates
    % return to work (partial or full) at 3 months98%87%0.01
    % full return to work at 3 months79%64%0.08
    % full return to work at 12 months100%100%
Time to (full) return to work (days)
    Median time to return to work (95% CI)37 (32 to 42)51 (35 to 67)
    Mean time to return to work (95% CI)36 (31 to 40)53 (44 to 62)0.00
    Median time to full return to work (95% CI)60 (52 to 67)83 (79 to 88)
    Mean time to full return to work (95% CI)67 (51 to 83)94 (71 to 117)0.10
Duration of sickness leave (days)
    Median duration of sickness leave (95% CI)46 (41 to 51)67 (40 to 94)
    Mean duration of sickness leave (95% CI)49 (40 to 58)73 (55 to 92)0.02
Recurrence
    Mean incidence (no. of spells) of recurrence in a one year period after full return to work1.92.20.26
    Median time to recurrence leave (95% CI)181 (156 to 206)162 (148 to 177)
    Mean time to recurrence leave (95% CI)187 (158 to 216)179 (156 to 202)0.54