Table 4.
Multiple linear regression for the ΔTAS-20 scores of all subjects. N=305 (independent variables: age, sex, ΔDIB, ΔOA, and ΔLHM)
| Independent variables | Dependent variables (ΔTAS-20) | |||
|---|---|---|---|---|
| ΔTotal | ΔDIF | ΔDDF | ΔEOT | |
| Mean ± SD | 0.58 ± 7.72 | 0.61 ± 4.23 | 0.26 ± 3.14 | -0.23 ± 3.52 |
| Model summary (r2) | 0.100 | 0.139 | 0.049 | 0.018 |
| F value | 6.640 | 9.639 | 3.111 | 1.094 |
| Durbin-Watson | 2.092 | 2.096 | 2.087 | 2.033 |
| Cook’s distance | 0.060 | 0.078 | 0.090 | 0.136 |
| p value | < 0.001 | < 0.001 | 0.009 | 0.364 |
| Constant | -1.991 | 0.261 | -0.838 | -1.550 |
| Age | (mean ± SD: 53.69 ± 15.05; VIF: 1.020) | |||
| r | 0.024 | -0.033 | 0.007 | 0.090 |
| B | -0.055 | -0.005 | -0.023 | 0.022 |
| p value | 0.093 | 0.724 | 0.195 | 0.101 |
| Sex | (male/female: 30/275; VIF: 1.010) | |||
| r | 0.009 | 0.004 | 0.031 | -0.006 |
| B | 0.449 | 0.113 | 0.085 | 0.014 |
| p value | 0.753 | 0.883 | 0.922 | 0.984 |
| ΔDIB | (mean ± SD: 0.93 ± 4.83; VIF: 1.158) | |||
| r | 0.285*** | 0.342*** | 0.211** | 0.027 |
| B | 0.407 | 0.270 | 0.128 | 0.017 |
| p value | < 0.001 | < 0.001 | 0.001 | 0.710 |
| ΔOA | (mean ± SD: 0.69 ± 4.57; VIF: 1.166) | |||
| r | 0.157** | 0.189*** | 0.105 | -0.003 |
| B | 0.094 | 0.059 | 0.021 | -0.010 |
| p value | 0.350 | 0.272 | 0.622 | 0.838 |
| ΔLHM | (mean ± SD: 1.16 ± 4.62; VIF: 1.017) | |||
| r | 0.146** | 0.161** | 0.070 | 0.091 |
| B | 0.019 | 0.116 | 0.034 | 0.074 |
| p value | 0.030 | 0.020 | 0.379 | 0.095 |
| ΔSTSS total r | 0. 311*** | 0. 364*** | 0. 213** | 0. 058 |
Δ: differences between scores before and after 3 months of yoga practice; *p < 0.05; **p < 0.01; ***p < 0.001 for correlation coefficients (r) with the Pearson’s correlation, DDF Difficulty in describing feelings, DIB Difficulty in identifying bodily feelings, DIF Difficulty in identifying feelings, EOT Externally-oriented thinking, LHM Lack of health management based on bodily feelings, OA Overadaptation, p value Multiple linear regression with the enter method, SD Standard deviation, STSS The Shitsu-taikan-sho Scale, TAS-20 The 20-item Toronto Alexithymia Scale, VIF Variance inflation factor