Table 1

Total intracurricular exposure times (first, second and third year together), injuries and injury incidence rates (IR) per 1000 hours and 95% CI per sports per sex

Sports classes	Sex	n	Exposure (hours)	Injuries	IR	95% CI		RR f:m	95% CI
Team ball sports	Male	635	107 168	52	0.49	0.37	– 0.64
	Female	448	75 001	87	1.16	0.94	– 1.43	2.39	1.70 to 3.37
	Total	1083	182 168	139	0.76	0.65	–0.90
Racket sports	Male	635	29 195	0	0.00	–	–
	Fmale	448	20 573	3	0.15	0.05	– 0.45	–	–
	Total	1083	49 768	3	0.06	0.02	– 0.19
Gymnastics	Male	635	70 260	56	0.80	0.61	– 1.04
	Female	448	49 243	91	1.85	1.50	– 2.27	2.32	1.66 to 3.23
	Total	1083	119 503	147	1.23	1.05	– 1.45
Martial arts	Male	635	33 322	14	0.42	0.25	– 0.71
	Female	448	23 149	14	0.60	0.36	– 1.02	1.44	0.69 to 3.02
	Total	1083	56 471	28	0.50	0.34	– 0.72
Track and field	Male	635	51 151	25	0.49	0.33	– 0.72
	Female	448	35 838	45	1.26	0.94	– 1.68	2.57	1.58 to 4.19
	Total	1083	86 989	70	0.80	0.64	– 1.02
Dance	Male	635	47 452	0	0.00	–	–
	Female	448	33 254	1	0.03	0.00	– 0.21	–	–
	Total	1083	80 706	1	0.01	0.00	– 0.09
Swimming	Male	635	44 797	2	0.04	0.01	– 0.18
	Female	448	31 359	10	0.32	0.17	– 0.59	7.14	1.56 to 32.60
	Total	1083	76 156	12	0.16	0.09	– 0.28
Practical didactics	Male	635	148 383	4	0.03	0.01	– 0.07
	Female	448	103 488	9	0.09	0.05	– 0.17	3.23	0.99 to 10.48
	Total	1083	251 870	13	0.05	0.03	– 0.09
Skating	Male	635	7478	2	0.27	0.07	– 1.07
	Female	448	5207	4	0.77	0.29	– 2.05	2.87	0.53 to 15.68
	Total	1083	12 685	6	0.47	0.21	– 1.05
School camps	Male	635	50 800	20	0.39	0.25	– 0.61
	Female	448	35 840	27	0.75	0.52	– 1.10	1.91	1.07 to 3.41
	Total	1083	86 640	47	0.54	0.41	– 0.72
Overall	Male	635	590 005	175	0.30	0.26	– 0.34
	Female	448	412 952	291	0.70	0.63	– 0.79	2.38	1.97 to 2.87
	Total	1083	1 002 957	466	0.46	0.42	– 0.51

RR and 95% CI per sports are calculated for female (F) vs male (M) students.
RR, rate ratios.