Does duration of pain at baseline influence clinical outcomes of low back pain patients managed on an evidence-based pathway?

Funding from The Health Foundation Scaling Up Improvement Programme, the North East Academic Health Science Network and the Primary Care Rheumatology Society, supported the NERBPP. Mary-Anne Jess was supported by funding from Teesside University. We thank all staff and patients involved in the NERBPP, including Kevin Pears for assisting with inputting and validating the data.