Table 3.

Discriminative ability of total baseline scores on the STarT Back Tool to correctly classify people with high scores on three different dichotomised outcomes at 3 months follow-up

	Danish primary care cohort AUC [95 % CI]	UK primary care cohort AUC [95 % CI]
People with a Roland Morris disability questionnaire score >30 at 3 months	0.71 [0.66; 0.77]	0.81 [0.78; 0.84]
People with severe back pain at 3 months (8–10 on a 0–10 scale)	0.79 [0.68; 0.89]	0.81 [0.78; 0.84]
People with ‘very’ or ‘extremely’ bothersome pain at 3 months	0.70 [0.64; 0.76]	0.72 [0.68; 0.76]

AUC area under the curve statistic from receiver operating characteristic (ROC) curves