Table 2.

Descriptive statistics of the final sample.

Standard	Group
	Maths tablet	Non-maths tablet	Normal practice
S1 (n = 42)	n = 22	NA	n = 20
Age (months)	84 (10.8) 73–118		81 (4.5) 74–93
Gender (F:M)	10:12		5:15
S2 (n = 110)	n = 38	n = 35	n = 37
Age (months)	91 (8.7) 74–109	91 (9.5) 79–119	92 (10.7) 75–125
Gender (F:M)	18:20	19:16	17:20
S3 (n = 131)	n = 44	n = 44	n = 43
Age (months)	106 (15.9) 87–161	109 (13.4) 87–147	105 (14.2) 79–139
Gender (F:M)	22:22	24:20	24:19

Age [mean (SD) and minimum–maximum] and gender (number of females F and males M) are reported for each of the standards assessed.