Table 2.

Self-reported global bullying in control and intervention schools in the focus cohort (grades 3–4)

	T1		T2		T3		T4		T5
	N	%	N	%	N	%	N	%	N	%
Intervention	2993		3180		3131		2992		2933
Not at all	1934	64.6	2291	72.0	2404	76.8	2422	80.9	2453	83.6
% change1						+ 18.8				+ 29.4
Once/twice	727	24.3	638	20.1	531	17.0	444	14.8	397	13.5
% change1						− 30.2				− 44.3
Monthly	148	4.9	109	3.4	101	3.2	66	2.2	42	1.4
% change1						− 34.8				− 71.0
Weekly	71	2.4	58	1.8	34	1.1	24	0.8	22	0.8
% change1						− 54.2				− 68.4
Daily	113	3.8	84	2.6	61	1.9	36	1.2	19	0.6
% change1						− 48.4				− 82.8
Total bullies2	332	11.1	251	7.9	196	6.3	126	4.2	83	2.8
% change1						− 43.6				− 74.5
Control	1279		1344		1325		1304		1306
Not at all	858	67.1	983	73.1	954	72.0	1012	77.6	1006	77.0
% change1						+ 7.3				+ 14.8
Once/twice	294	23.0	250	18.6	283	21.4	238	18.3	259	19.8
% change1						− 7.1				− 13.7
Monthly	48	3.8	48	3.6	44	3.3	24	1.8	22	1.7
% change1						− 11.5				− 55.1
Weekly	28	2.2	23	1.7	18	1.4	16	1.2	12	0.9
% change1						− 37.9				− 58.0
Daily	51	4.0	40	3.0	26	2.0	14	1.1	7	0.5
% change1						− 50.8				− 86.6
Total bullies2	127	9.9	111	8.3	88	6.6	54	4.1	41	3.1
% change1						− 33.1				− 68.4

¹The percentages of change are calculated relative to the T1 prevalence

²The sum of bullies who bully monthly, daily, or weekly. Entries highlighted in bold refer to the most important numbers in this table