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. 2009 Aug 18;339:b3170. doi: 10.1136/bmj.b3170

Table 5.

 Differences in mean WOMAC pain scores by time

Time (months) Difference* P value
Mean (SE) 95% CI
Exercise v no exercise
6 −0.76 (0.39) −1.53 to 0.01 0.052
12 −0.52 (0.41) −1.33 to 0.28 0.202
24 −0.91 (0.38) −1.66 to −0.17 0.016
Diet v no diet
6 0.06 (0.40) −0.75 to 0.86 0.887
12 0.14 (0.38) −0.60 to 0.89 0.705
24 −0.08 (0.41) −0.91 to 0.75 0.849

*Analysis after multiple imputation and adjusted for other intervention plus exercise × time, diet × time, BMI band, age band, baseline pain, and sex.