The presented final four-predictor model comprising
resigned attitude towards the job, functional limitation and
duration of LBP as predictors for the development of
persistent LBP and social support at work as predictive
resource preventing the development of persistent LBP
should be interpreted cautiously. This predictor model
explained 51 % of variance of the development of persistent
LBP, suggesting that there may be other predictive
factors not identified in this study. The model has a good
applicability to rule out patients with a low risk of developing
persistent LBP (specificity 0.92) but is less appropriate
to rule in patients with a high risk of developing
persistent LBP (sensitivity 0.67) (Bossuyt et al. 2004).