Document Classification

Section Type: RESULTS

Text: At 1 year, the mean improvement in PDQ-39 summary index score compared with baseline was 5. 0 points in the surgery group and 0. 3 points in the medical therapy group (difference -4. 7, 95 % CI -7. 6 to -1. 8 ; p = 0. 001) ; the difference in mean change in PDQ-39 score in the mobility domain between the surgery group and the best medical therapy group was -8. 9 (95 % CI -13. 8 to -4. 0 ; p = 0. 0004), in the activities of daily living domain was -12. 4 (-17. 3 to -7. 5 ; p < 0. 0001), and in the bodily discomfort domain was -7. 5 (-12. 6 to -2. 4 ; p = 0. 004).