Table 1.

Screening questions from the OPAL cohort study questionnaire³

Questions	Response required to be eligible for BOOST Trial
In the past 6 WEEKS, have you had back pain and/or pain or other symptoms such as tingling, numbness or heaviness that travelled from your back into your buttocks or legs? (Note: If the answer to this question is no, then the participant will not complete the remaining questions).	Yes.
Does standing make the pain or symptoms in your buttocks or legs worse? Does walking make the pain or symptoms in your buttocks or legs worse? Does sitting down make the pain or symptoms in your buttocks or legs better? Does bending forward (eg, to push a shopping trolley) make the pain or symptoms in your buttocks or legs better?	Yes to at least one of these questions.

BOOST, Better Outcomes for Older people with Spinal Trouble; OPAL, Oxford Pain, Activity and Lifestyle.