Table 3.
Multilevel regression models for outcome variables.
| Outcome Variable |
Walk 50 FT2 | |||||
|---|---|---|---|---|---|---|
| PAR-Strength1 | PAR-Flexibility2 | PAR-Exercise2 | CST2 | Walk 4M2 | ||
|
| ||||||
| Effect: b (SE) | ||||||
| Intercept | 0.45(0.13)*** | 0.06(0.10) | 0.83(0.09)*** | 1.11(0.03)*** | 0.90(0.03)*** | 1.05(0.02)*** |
| Linear Time | −0.07(0.04) | 0.05(0.10) | 0.03(0.03) | −0.001(0.01) | −0.11(0.03)*** | −0.01(0.01) |
| Quadratic Time | – | −0.01(0.02) | – | – | 0.02(0.01)*** | – |
| Treatment (Tai Chi) | −0.09(0.18) | −0.35(0.15)* | 0.21(0.13) | 0.01(0.04) | −0.09(0.04)* | 0.01(0.03) |
| Linear Time × Treatment (Tai Chi) | 0.05(0.06) | 0.47(0.13)*** | −0.06(0.04) | 0.01(0.01) | 0.09(0.04)* | 0.01(0.01) |
| Quadratic Time × Treatment (Tai Chi) | – | −0.09(0.03)** | – | – | −0.02(0.01)* | – |
We only report estimates for Quadratic Time and Quadratic Time x Treatment for outcome variables that were evaluated using a quadratic model.
CST: Chair Stand Test; PAR-Exercise: Physical Activity Recall-Exercise; PAR-Flexibility: Physical Activity Recall-Flexibility; PAR-Strength: Physical Activity Recall-Strength; Walk 4M: 4-Meter Walk Test; Walk 50FT: 50-Foot Walk Test.
1
Cube root transformation.
2
Log10 transformation.
*
p < .05;
**
p < .01;
***
p < .001.