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. 2018 Apr 19;6(4):e90. doi: 10.2196/mhealth.9456

Table 2.

Descriptive statistics from child interviews showing age, gender, and response characteristics for participating children.

Variable Child age (years) Total (n) Mean (SD)a Choice (n)b

4 5 6 7 8 9 10 11 12


Gender (n)












Male 1 1 1 0 1 1 0 2 1 8


Female 1 1 1 1 0 3 0 2 1 10

Accuracy (n correct)c












1a. Sad 2 2 2 1 1 4 d 4 2 18 4.24 (0.75) 0

1b. Happy 2 2 2 1 1 4 4 2 18 4.53 (0.80) 18

2a. Sleep Poorly 1 1 0 1 1 1 1 2 8 3.65 (1.27) 4

2b. Sleep Well 1 1 0 1 1 2 1 1 8 4.29 (0.85) 13

3a. Worried 0 0 0 0 0 2 3 1 6 3.71 (1.05) 4

3b. Not Worried 0 0 0 0 1 1 2 1 5 4.12 (0.86) 14

aAverage rating of how well the animation captured the intended behavior (scale 1-5).

bTotal number of children endorsing the animation as “more like them” from the respective pair.

cNumber of children who correctly identified each animation.

dAccuracy responses unavailable for 10-year olds as no children of this age were recruited in this sample.