Table 2.
Patient 4-day Usability Testing Results (n = 10)
| Response Rate by Query Type | |
| All Queries | 83.3% |
| Mood | 77.2% |
| Medication | 92.0% |
| Substance Use | 86.4% |
| Misspelled Response Rate | 1.29% |
| Minutes to Respond to Query | |
| All Queries | |
| Mean (SD) | 53.8 (138.5) |
| Median | 5.0 |
| Range | 0–883 |
| Mode | 1.0 |
| Mood Queries | |
| Mean (SD) | 47.4 (106.0) |
| Median | 4.00 |
| Range | 0–769 |
| Mode | 1.0 |
| Medication Queries | |
| Mean (SD) | 36.9 (118.3) |
| Median | 3.5 |
| Range | 0–751 |
| Mode | 0.0 |
| Substance Use Queries | |
| Mean (SD) | 86.2 (200.1) |
| Median | 8.5 |
| Range | 0–883 |
| Mode | 1.0 |
| Content of Responses | |
| Mood Query | |
| Mood Rating Mean (SD) | 3.4 (0.9) |
| Median | 4.0 |
| Range | 1–4 |
| Mode | 4.0 |
| Mood Frequency (note: n =64) | |
| 0=very negative | 0 (0.0) |
| 1=somewhat negative | 3 (4.7) |
| 2=neutral | 9 (14.1) |
| 3=somewhat positive | 11 (17.2) |
| 4=very positive | 41 (64.1) |
| Medication Query | |
| ”yes” | 46 (100.0) |
| Coded Substance Use Query | |
| Clear (no substance use) | 31 (81.6) |
| Cloudy (marijuana use) | 4 (10.5) |
| Rainy (alcohol use) | 1 (2.6) |
| Snowy (crack/cocaine use) | 1 (2.6) |
| Cloudy and rainy (marijuana and alcohol use) | 1 (2.6) |