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Estimates for the moderating effect of the GDSa and usability in the prediction of user satisfaction.
| Variable | Estimate | Standard error | Z | P value |
| Usability | 0.43 | 0.082 | 5.28 | <.001 |
| GDS | –0.012 | 0.009 | –1.34 | .18 |
| H1: Usability × GDS | –0.028 | 0.015 | –1.90 | .06 |
aGDS: Geriatric Depression Scale.
