Figure 1.

Discriminative ability at external validation. The figure shows the ROC curves of the models identifying office workers with high sickness absence days (grey line; AUC = 0.65 with 95% CI = 0.58 – 0.71) and high sickness absence episodes (black line; AUC = 0.76 with 95% CI = 0.70 – 0.82); the diagonal indicates no discrimination above chance.

Roelen et al. BMC Public Health 2013 13:105   doi:10.1186/1471-2458-13-105
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