Table 4.

Scheffe test Comparison of differences in internet addiction based on time spent on the internet every day and GPA (performance).

Variables	(J) Number of children	Mean Difference (I-J)	Std. Error	Sig.	95% Confidence Interval
					Lower Bound	Upper Bound
Time spends on the Internet every day
≤3 h	4–5 h	−9.4477*	2.2235	.00	−14.9197	−3.9756
	≥6 h	−27.6425*	2.2972	.00	−33.2960	−21.9891
4–5 h	≤3 h	9.4477*	2.2235	.00	3.9756	14.9197
	≥6 h	−18.1949*	1.6325	.00	−22.2126	−14.1772
≥6 h	≤3 h	27.6425*	2.2972	.00	21.9891	33.2960
	4–5 h	18.1949*	1.6325	.00	14.1772	22.2126
GPA (performance)
≤ 3.9	4-4.4	−10.1541*	1.7282	.00	−14.4073	−5.9009
	> 4.5	−30.8764*	2.01573	.00	−35.8370	−25.9157
4-4.4	≤ 3.9	10.1541*	1.72827	.00	5.9009	14.4073
	> 4.5	−20.7223*	1.90956	.00	−25.4216	−16.0230
> 4.5	≤ 3.9	−30.8764*	2.01573	.00	25.9157	35.8370
	4-4.4	−20.7223*	1.90956	.00	16.0230	25.4216

^*The mean difference is significant at the .05 level.