Table 5 Questions with no significant loadings on any of the 15 factors

Q7

In general would you say your health is: (0–10), (excellent – poor)

Q13

In past 4 weeks how much has health or emotions limited social activity (0–10), (none of time – all of time)

Q14

Compared to one year ago, how do you rate your health (0–10), (much better – much worse)

Q16-P

Does your health now limit you in sitting: (0–10), (not at all – a lot)

Q17-A

Physical activity makes me hurt more (0–10), (completely agree – completely disagree)

Q18-E

How are you feeling in past 4 weeks: Have you been a happy person? (0–10), (none of time – all of time)

Q20-C

Your control over your pain (0–10), (complete – none)