Table 4.

Comparison of injury incidence in Victorian and non-Victorian teams (1992–1998) (injuries/team/season)

Injury category	Incidence		RR	95% CI
	Northern	Southern	N:S (warm:cool)	Low	High
Concussion	0.9	0.9	1.00	0.65	1.53
Other head and neck injuries	1.1	0.9	1.29	0.87	1.93
Shoulder joint injuries	1.1	1.0	1.10	0.75	1.63
Acromioclavicular injuries	1.1	0.9	1.21	0.81	1.81
Upper limb fractures	1.6	1.8	0.88	0.64	1.20
Other upper limb injuries	0.6	0.6	1.04	0.62	1.73
Trunk injuries	1.2	1.2	0.97	0.68	1.39
Back and buttock injuries	2.0	2.5	0.81	0.62	1.07
Groin and hip injuries	5.2	3.5	1.48	1.23	1.79*
Hamstring strain injuries	7.2	8.0	0.90	0.78	1.04
Quadriceps strain injuries	2.7	2.0	1.32	1.03	1.71*
Knee ACL	1.1	0.7	1.71	1.13	2.58*
Knee MCL	1.1	1.2	0.87	0.60	1.27
Knee PCL	0.4	0.6	0.72	0.40	1.30
Knee cartilage/degenerative injuries	1.9	1.3	1.45	1.06	1.98*
Other knee injuries	2.0	1.2	1.66	1.21	2.26*
Leg fractures	0.6	0.4	1.36	0.80	2.29
Leg stress fractures	0.4	0.3	1.11	0.54	2.31
Calf muscle strain injuries	2.4	1.8	1.35	1.02	1.77*
Lower limb hematomas (‘corks’)	2.2	1.8	1.19	0.90	1.58
Foot fractures (including stress fractures)	0.5	0.7	0.76	0.45	1.29
Ankle joint injuries	3.8	2.2	1.71	1.36	2.15*
Other lower limb injuries	1.5	1.8	0.85	0.62	1.17
Medical illnesses	1.8	1.8	1.03	0.76	1.39
Total injuries	44.4	39.1	1.14	1.07	1.21*

Notes:

^*Indicates significantly higher risk of injury for northern teams (P<0.05 or 95% confidence). Reprinted with permission from AGCSA.13

Abbreviations: ACL, anterior cruciate ligament; CI, confidence interval; MCL, medial collateral ligament; PCL, posterior cruciate ligament; RR, relative risk; N, north; S, south.