Table 2.
Agreement of symptom reporting among study participants between mobile phone symptom diary app and nurse home visit, April 2015 to June 2016.
| Symptomsa |
Symptom diary app (n=113) |
Nurse home visit (n=113) |
Kappa or Kendall taub | Pb |
| Fever, n (%) | 62 (56.9) | 79 (69.9) | .57 | <.001 |
| Fever duration (days), mean (SD) | 2.9 (1.3) | 3.0 (1.8) | .46 | <.001 |
| Rash, n (%) | 15 (24.2) | 16 (20.3) | .59 | <.001 |
| Pain, n (%) | 38 (61.3) | 45 (57.0) | .55 | <.001 |
| Nausea, n (%) | 29 (46.8) | 32 (40.5) | .48 | <.001 |
| Bleeding, n (%) | 3 (4.8) | 1 (1.3) | –.02 | .82 |
| Vomiting, n (%) | 62 (57.4) | 29 (25.7) | .63 | <.001 |
| Duration (days), mean (SD) | 2.5 (2.0) | 1.9 (0.9) | .69 | <.001 |
| Maximum emesis/day, mean (SD) | 4.5 (2.8) | 3.6 (1.7) | .56 | .002 |
| Diarrhea, n (%) | 33 (30.3) | 70 (62.0) | .61 | <.001 |
| Diarrhea duration (days), mean (SD) | 3.2 (1.8) | 3.4 (1.8) | .78 | <.001 |
| Maximum stools/day, mean (SD) | 4.7 (2.1) | 5.1 (2.2) | .29 | .006 |
aParticipants were asked additional symptom questions if they responded that “yes” their child had fever, diarrhea, or vomiting on the app or the nurse phone call. Nurses also asked the same questions using the same screening technique at the home visit (along with many more detailed questions). Symptoms included any reported symptom, regardless of duration.
bKappa statistic for categorical variables and Kendall tau for continuous variables.