Table 1. Perceived usefulness and NASA usability scores of FitTastic.
| N | Mean | SD | α | |
|---|---|---|---|---|
| TAM | ||||
| Perceived usefulness mean score | 38 | 3.3 | 0.5 | .91 |
| Perceived usefulness items | ||||
| If FitTastic were available to other providers, colleagues, and clinics, how likely would you be to recommend use of it? | 3.9 | 0.6 | ||
| Overall, I find FitTastic useful in my job | 3.7 | 0.6 | ||
| Using FitTastic improves the quality of the work I do | 3.6 | 0.7 | ||
| Using FitTastic enhances my effectiveness on the job | 3.6 | 0.7 | ||
| FitTastic supports critical aspects of my job | 3.6 | 0.7 | ||
| Using FitTastic makes it easier to do my job | 3.5 | 0.7 | ||
| Using FitTastic improves my job performance | 3.5 | 0.7 | ||
| FitTastic addresses my job-related needs | 3.4 | 0.9 | ||
| FitTastic enables me to accomplish tasks more quickly | 3.2 | 1.0 | ||
| Using FitTastic saves me time | 3.1 | 1.0 | ||
| Using FitTastic allows me to accomplish more work | 3.1 | 0.8 | ||
| Using FitTastic gives me great control over my work | 3.0 | 0.8 | ||
| Using FitTastic increases my productivity | 3.0 | 0.9 | ||
| Using FitTastic reduces the time I spend on unproductive activities | 3.0 | 0.9 | ||
| Managing child obesity would be difficult to do without FitTastic | 2.6 | 0.8 | ||
| NASA | ||||
| Usability mean score | 37 | 4.8 | 0.9 | .95 |
| Usability items | ||||
| FitTastic simple to use | 5.5 | 1.1 | ||
| Easy to learn FitTastic | 5.2 | 1.3 | ||
| FitTastic provides clear information | 5.2 | 1.0 | ||
| FitTastic provides easy-to-understand information | 5.2 | 1.1 | ||
| Info provided effective for task completion | 5.2 | 1.1 | ||
| Complete work effectively using FitTastic | 5.1 | 1.1 | ||
| Satisfaction with ease of FitTastic use | 5.1 | 1.3 | ||
| Complete work efficiently using FitTastic | 5.1 | 1.2 | ||
| Complete work quickly using FitTastic | 5.0 | 1.2 | ||
| Clear info organization on FitTastic screens | 5.0 | 1.2 | ||
| Comfortable using FitTastic | 5.0 | 1.4 | ||
| Easy to find information needed | 4.9 | 1.1 | ||
| Overall satisfied with system | 4.8 | 1.1 | ||
| Became productive quickly using FitTastic | 4.7 | 1.3 | ||
| System interface is pleasant | 4.4 | 1.2 | ||
| System has all functions and capabilities | 4.4 | 1.2 | ||
| I like using interface | 4.3 | 1.2 | ||
| Error recovery quick and easy | 3.9 | 0.8 | ||
| FitTastic error messages tell how to fix problems | 3.9 | 0.9 |
Abbreviations: NASA, National Aeronautics and Space Administration; SD, standard deviation; TAM, technology acceptance model.
Note: TAM perceived usefulness scale range is 1 to 5, neutral is 2.5. The NASA usability scale range is 1 to 7, neutral is 3.5.