Parameters associated with severe post-operative pain:
(1) female gender (odds ratio 1.73)
(2) high level pre-operative pain severity (odds ratio 3.09)
(3) pre-operative pain lasting > 6 months (odds ratio 1.70)
(4) high level of post-operative pain expected (odds ratio 2.41)
(5) age < 60
As the number of these factors increased, the percentage of patients reporting high satisfaction with pain control decreased.
Parameters associated with worse than expected post-operative pain:
(1) female gender (odds ratio 3.23)
(2) high level of pre-operative pain severity (odds ratio 2.60)
(3) low level of post-operative pain expected (odds ratio 3.23)
(4) age < 60
(5) high anxiety about risks (odds ratio 1.87)
(6) high willingness to report pain (odds ratio 1.63)
