Answer 8

Precision is given by the confidence intervals.

The results of the analysis reported in the abstract and tables were:

  • Improvement of pain while lying in bed on VAS OR 2.36 CI (1.13–4.93) p = 0.023
  • Improvement of pain on rising OR 1.93 CI (0.97–3.86) p= 0.061
  • Improvement of pain related disability (Roland Morris Questionnaire) OR 2.10 CI (1.24–3.56) p= 0.006