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Table 3 Significant Independent Predictors (Adjusted) of the Relative Rate Ratio of RTW for participants who returned to work during the 6 month study.

From: Bio-psychosocial determinants of time lost from work following non life threatening acute orthopaedic trauma

Main effects model only
Factor P Relative Rate Ratio
(adjusted)
95% C.I
Co-morbid conditions: one or more 0.001 0.52 0.33-0.84
To Fill the day 0.003 2.19 1.23-3.88
High Initial pain intensity 0.022 0.57 0.35-0.92
Main effects plus interaction
Factor P Relative Rate Ratio
(adjusted)
95% C.I
Co-morbid conditions: one or more 0.001 0.44 0.26-0.72
To Fill the day 0.003 2.41 1.35-4.30
High Initial pain intensity 0.008 0.51 0.31-0.84
Co-morbid conditions* self employment 0.009 7.14 1.62-31.48
Relative rate ratio for interaction 0.44 × 0.84 × 7.14 = 2.63
  1. Factors included in the final main effects model (Shouldn't work, social functioning, psychological distress, age, orthopaedic injury to more than one region, self employment, co morbidities, initial pain intensity, self employment. Study factors tested that did not remain in the final model: financial security, because I feel able to. Confounding factors tested but did not remain in the final model: gender, education, injury severity