Table 5.

Usability of study tool by study arm

	Standard	Mobile health	P value
Dehydration assessment time in minutes, median (IQR)
Overall	1 (1–1)	1 (1–2)	0.751
Younger than five	1 (1–1)	1 (1–1)	0.854
Older than five	1 (1–2)	1 (1–2)	0.763
Difficulty of use, median (IQR)*
Overall	2 (1–2)	2 (1–2)	0.372
Younger than five	2 (1–2)	2 (1–2)	0.180
Older than five	1 (1–1)	1 (1–1)	0.878
Confidence in assessment, median (IQR)*
Overall	9 (9–10)	9 (9–10)	0.999
Younger than five	9 (8–10)	9 (8–10)	0.766
Older than five	10 (9–10)	10 (10–10)	0.996
Would use again, median (IQR)*
Overall	9 (9–10)	9 (9–10)	0.736
Younger than five	9 (8–10)	9 (8–10)	0.987
Older than five	10 (9–10)	10 (9–10)	0.867

IQR = interquartile range.

^*As self-reported by nurses on a Likert scale of 1–10, with 10 being the greatest on each measure.