Table 4.

Group descriptives and t test results for the mobile phone versus tablet independent groups comparison (see Multimedia Appendix 1).

Group	N	Mean	Standard deviation	Degrees of freedom	t	P	Cohen
Mobile phone	63	0.89	1.04
Tablet	66	0.93	1.11
Difference		−0.04	1.08	127	−0.2	.84	0.04