Table 3

Multivariable Cox regression results for any injury and any time-loss injury

		Any injury					Time-loss injury
Variable	Level of variable	n	HR	95% CI		p Value	n	HR	5% CI		p Value
Body mass (kg)						0.01					0.15
	47–62	301	1			Referent	310	1			Referent
	62–68	296	0.79	0.64	0.98	0.03	311	0.77	0.57	1.03	0.08
	68–72	315	0.74	0.61	0.91	0.01	324	0.90	0.68	1.18	0.44
	72–79	291	0.82	0.66	1.00	0.05	308	1.01	0.77	1.33	0.92
	79–103	312	0.71	0.58	0.88	0.001	325	0.73	0.55	0.97	0.03
2.4 km run time (s)						<0.001					0.001
	456–575	306	1			Referent	312	1			Referent
	575–604	297	1.14	0.92	1.42	0.24	308	1.27	0.94	1.70	0.11
	604–629	310	1.32	1.07	1.64	0.01	326	1.30	0.97	1.74	0.08
	629–662	308	1.32	1.07	1.64	0.01	323	1.37	1.02	1.83	0.04
	662–762	294	1.60	1.29	1.99	0.00	309	1.86	1.40	2.47	<0.001
Prior fracture	No						857	1			Referent
	Yes						721	1.18	0.99	1.41	0.06
Prior shin pain	No	1295	1			Referent	1346	1			Referent
	Yes	220	1.21	1.01	1.46	0.04	232	1.55	1.24	1.94	<0.001
Injury in past 12 months	No	1181	1			Referent
	Yes	334	1.19	1.01	1.39	0.03