Table 3.
Analysis of variance results for effect of condition (comparison vs control) on hand grip strength and persistence (95% CI)
| Comparison group | Control group | Significance |
||||
| Mean (SE) | Mean (SE) | df | F | P | η2 | |
| Grip strength (kg) | ||||||
| Basic model (no covariates) | 6.9 (1.38) | 11.02 (1.36) | 1,53 | 4.51 | 0.038 | 0.078 |
| Strength adjusting for self-reported arthritis | 6.85 (1.32) | 11.07 (1.3) | 1,52 | 5.21 | 0.027 | 0.091 |
| Strength adjusting for age and gender norms, education level, residence and arthritis | 6.86 (1.46) | 11.07 (1.31) | 1,48 | 4.73 | 0.035 | 0.090 |
| Grip persistence (s) | ||||||
| Basic model (no covariates) | 8.36 (1.46) | 12.57 (1.43) | 1,53 | 4.23 | 0.045 | 0.074 |
| Persistence adjusting for self-reported arthritis | 8.32 (1.44) | 12.61 (1.41) | 1,52 | 4.52 | 0.038 | 0.038 |
| Persistence adjusting for age and gender norms, education level, residence and arthritis | 8.33 (1.46) | 12.61 (1.44) | 1,48 | 4.64 | 0.036 | 0.09 |
There is a significant effect of self-reported arthritis on grip strength (F=6.08, df =1,52, P=0.017, η2=0.105) but not for persistence (F=2.52, df=1,52, P=0.12, η2=0.046).
η2, effect size estimate; df, degrees of freedom.