Table 2. Distribution of selected factors according to categories of physical fighting among school-attending adolescents in Egypt (2006).

Variable	Not involved in physical fights (n = 3, 545)	Involved in physical fights (n = 1, 593)	p-value	Chi-square or t-value
Age (mean)	13.2 (0.93)	13.2 (0.99)	0.410	−0.825
Sex (female)	55.0	33.1	<0.001	211.606
Food insecurity	5.0	6.2	0.066	3.400
Bullied	45.6	70.3	<0.001	269.243
Loneliness	8.4	13.1	<0.001	27.529
Anxiety	8.0	14.1	<0.001	44.659
Signs of depression	30.6	34.2	<0.011	6.492
Truancy	14.0	21.9	<0.001	49.386
Social network
No close friends	7.3	6.2	<0.001	21.134
One close friend	17.8	13.1	—	—
Two close friends	30.3	31.2	—	—
Three or more close friends	44.6	50.0	—	—
Helpful peers	27.1	16.8	<0.001	64.074
Sedentary	21.1	31.5	<0.001	63.605
Physically active	18.0	20.4	0.044	4.072
Understanding parents	19.0	11.7	<0.001	41.973

Notes.

All variables are expressed as proportions (in %) except for age (mean and standard deviation).