Table 1.

Comparison of age, age of acquiring phone, and age of using smartphone in boys and girls

Variables	Mean	SD	t	df	P
Age
Boys	20.021	1.973	0.576	497	0.565 (NS)
Girls	19.919	1.889
Age of the first phone
Boys	13.742	2.126	−2.859	497	0.004 (S)
Girls	14.313	2.195
Age of first smartphone
Boys	15.78	1.408	−1.035	497	0.301 (NS)
Girls	16.233	5.943

NS – Not significant; S – Significant; SD – Standard deviation