Table 6.
Spearman correlations between the values on the paper survey and the average values on the biweekly app survey.
| Survey | Days before and after the paper survey, number of patients reporting through the app, and scores | |||||||||||
|
|
Same day (n=18) | 3 days (n=39) | 7 days (n=63) | 14 days (n=96) | ||||||||
|
|
Correlation | S-statistic | P value | Correlation | S-statistic | P value | Correlation | S-statistic | P value | Correlation | S-statistic | P value |
| PHQ-9a sum | .512 | 472.93 | .03 | .593 | 3720.6 | <.001 | .574 | 17,767 | <.001 | .469 | 78,362 | <.001 |
| PHQ-10b | .736 | 256.09 | .001 | .415 | 5345.6 | .009 | .409 | 24,640 | .001 | .283 | 105,715 | .005 |
aPHQ-9: Patient Health Questionnaire–9.
bPHQ-10: Patient Health Questionnaire Q10.