Table 1 Frequency of physical fighting in 2015 and 2018 in boys and girls in junior high school and senior high school

From: Physical Fighting and Leisure Activities among Norwegian Adolescents—Investigating Co-occurring Changes from 2015 to 2018

	Boys								Girls
	Junior high school				Senior high school				Junior high school				Senior high school
	2015		2018		2015		2018		2015		2018		2015		2018
	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n
No physical fighting	68.6	3,853	61.9	4,110	79.6	3,929	70.6	3,516	91.1	5,428	86.9	5,972	94.2	5,142	91.5	5,034
Once	15.9	894	18.0	1,197	10.4	515	14.2	709	5.4	321	7.7	529	3.9	211	5.4	299
2–5 times	10.9	611	13.7	910	7.4	364	10.1	504	2.7	162	3.6	250	1.4	79	2.1	116
6–10 times	2.1	118	2.4	162	1.4	68	1.9	97	0.4	25	0.8	53	0.2	12	0.4	20
11 times or more	2.6	144	3.9	262	1.2	61	3.1	156	0.4	23	1.0	72	0.2	12	0.5	30
Total	100.0	5,620	100.0	6,641	100.0	4,937	100.0	4,982	100.0	5,959	100.0	6,876	100.0	5,456	100.0	5,499

Note. All differences over time, gender, and school level were significant at p < 0.001

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