Appendix Table 1.
Variable | Mean Change From Baseline (95% CI), mm
|
Between−Group Difference
|
||
---|---|---|---|---|
Tai Chi (n = 106) | Physical Therapy (n = 98) | Tai Chi vs. Physical Therapy (95% CI), mm | PValue† | |
Main results from Table 2 for comparison | 0.22 | |||
| ||||
Week 12 | −167.2 (−190.4 to −144.9) | −143.0 (−167.4 to −118.6) | −24.2 (−57.9 to 9.6) | |
| ||||
Week 24 | −158.6 (−182.9 to −134.3) | −124.3 (−150.0 to −98.5) | −34.3 (−69.8 to 1.1) | |
| ||||
Week 52 | −138.8 (−166.7 to −110.8) | −121.0 (−150.0 to −91.9) | −17.8 (−58.1 to 22.4) | |
| ||||
Score assigned baseline value if no 12-wk data (last observation carried forward) | ||||
Week 12 | −137.6 (−160.6 to −114.7) | −116.0 (−140.0 to −92.1) | −21.6 (−54.6 to 11.4) | 0.20 (t test) |
Via multiple imputation | 0.24–0.80 | |||
| ||||
Week 12 | −158.6 (−184.4 to −132.9) | −141.0 (−168.9 to −113.1) | −17.6 (−54.7 to 19.5) | |
| ||||
Week 24 | −152.0 (−179.2 to −124.8) | −127.0 (−157.3 to −96.7) | −25.0 (−65.1 to 15.0) | |
| ||||
Week 52 | −132.2 (−164.4 to −100.1) | −116.9 (−147.5 to −86.3) | −15.4 (−60.9 to 30.2) | |
| ||||
Adjusted for baseline body mass index | 0.23 | |||
Week 12 | −166.8 (−190.2 to −143.4) | −143.1 (−167.5 to −118.8) | −23.7 (−57.5 to 10.1) | |
| ||||
Week 24 | −157.1 (−181.6 to −132.6) | −123.9 (−149.7 to −98.1) | −33.2 (−68.8 to 2.4) | |
| ||||
Week 52 | −137.4 (−165.6 to −109.3) | −120.8 (−149.9 to −91.7) | −16.6 (−57.1 to 23.9) | |
Adjusted for race | 0.18 | |||
| ||||
Week 12 | −166.6 (−189.9 to −143.3) | −141.1 (−165.5 to −116.7) | −25.5 (−59.3 to 8.3) | |
| ||||
Week 24 | −157.9 (−182.3 to −133.5) | −121.6 (−147.4 to −95.7) | −36.4 (−71.9 to −0.81) | |
| ||||
Week 52 | −137.8 (−165.7 to −109.9) | −118.2 (−147.2 to −89.2) | −19.6 (−59.8 to 20.7) | |
| ||||
Adjusted for analgesic use at the corresponding visit | 0.21 | |||
Week 12 | −165.5 (−188.4 to −142.5) | −140.9 (−164.9 to −116.8) | −24.6 (−57.8 to 8.6) | |
| ||||
Week 24 | −157.2 (−181.4 to −132.9) | −125.8 (−151.4 to −100.1) | −31.4 (−66.7 to 3.9) | |
| ||||
Week 52 | −134.8 (−162.7 to −106.8) | −121.9 (−150.7 to −93.1) | −12.9 (−53.0 to 27.2) | |
Adjusted for 6-min walk (in meters) at the corresponding visit | 0.52 | |||
| ||||
Week 12 | −156.7 (−179.1 to −134.3) | −142.2 (−165.7 to −118.7) | −14.5 (−46.7 to 17.7) | |
| ||||
Week 24 | −146.0 (−171.1 to −121.0) | −119.5 (−145.8 to −93.2) | −26.5 (−62.6 to 9.5) | |
| ||||
Week 52 | −133.9 (−161.0 to −106.8) | −116.0 (−144.5 to −87.5) | −17.9 (−57.0 to 21.2) | |
| ||||
Adjusted for SF-36 physical component summary at the corresponding visit | 0.84 | |||
Week 12 | −142.3 (−163.4 to −121.2) | −134.1 (−155.8 to −112.4) | −8.2 (−38.0 to 21.7) | |
| ||||
Week 24 | −130.0 (−152.8 to −107.2) | −115.9 (−139.6 to −92.2) | −14.1 (−46.5 to 18.3) | |
| ||||
Week 52 | −116.5 (−141.5 to −91.5) | −103.2 (−129.0 to −77.4) | −13.3 (−48.7 to 22.1) |
SF-36 = 36-Item Short Form Health Survey; WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index.
Range, 0–500 mm. Sensitivity analyses were performed using the multiple imputation method (multivariate chained equation) to examine the effect of missing observations. All variables shown in Appendix Table 3 were included in the multiple imputation. There were 5 imputed data sets in total. Higher scores for all variables indicate more severe disease status.
Interaction P value unless otherwise indicated.