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| Dependent variable | 12 months | 24 months | ||||||||
| Health education | Choral singing | p value | Health education | Choral singing | p value | |||||
| No | Mean (SE) | No | Mean (SE) | No | Mean (SE) | No | Mean (SE) | |||
| CCTS change from baseline | 44 | 0.02 (0.03) | 45 | 0.1 (0.04) | 0.14 | 44 | -0.1 (0.05) | 47 | 0.05 (0.05) | 0.042 |
| Adjusted for baseline CCTS* | 44 | 0.004 (0.05) | 45 | 0.08 (0.04) | 0.18 | 44 | -0.083 (0.05) | 47 | 0.036 (0.05) | 0.091* |
*Observed power=0.394.
