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. 2021 Jun 4;9(2):e23130. doi: 10.2196/23130

Table 1.

Demographic characteristics in eligible users.

Variables Children with typical development (n=223) Children with developmental disabilities (n=147) Total (n=370) P value Effect size
Age (months), median (IQR) 40.0 (12.0) 72.0 (32.5) 45.0 (26.5) <.001 0.839a
Diagnosis, n (%)

Intellectual disability 0 (0.0) 44 (0.33) 44 (0.11) N/Ab N/A

Autism spectrum disorder 0 (0.0) 41 (0.27) 41 (0.11) N/A N/A

Developmental disorder 0 (0.0) 33 (0.22) 33 (0.09) N/A N/A

Brain lesions 0 (0.0) 25 (0.17) 25 (0.09) N/A N/A

Monogenic disorder 0 (0.0) 4 (0.02) 4 (0.01) N/A N/A
Children playing subgame, n (%)

Second subgame 222 (99.55) 144 (97.96) 366 (98.92) .03 <0.001

Third subgame 216 (97.31) 145 (98.64) 361 (97.84) .24 <0.001

Sixth subgame 198 (88.79) 139 (95.56) 337 (91.98) .04 0.002
Device size (inches), median (IQR) 6.1 (4.2) 6.1 (4.2) 6.1 (4.2) <.001 0.469a
Game playtime, (s/per game), median (IQR) 11.8 (8.5) 8.1 (6.5) 10.3 (8.2) <.001 0.687a
Games played, median (IQR) 9.0 (9.0) 1.0 (14.2) 7.0 (12.5) <.001 0.682a

aCommon language effect size of continuous variables; η2 for effect size of categorical variables.

bN/A: not applicable.