Odds Ratio	95% CI
Age	0.98	(0.97, 1.00)
Height (in)	0.95	(0.91, 0.99)
How would you best describe the area in which you reside?
Urban vs. Suburban	0.73	(0.54, 0.99)
Rural vs. Suburban	1.08	(0.74, 1.58)
Other vs. Suburban	0.14	(0.02, 1.18)
What is your average weekly mileage within the past year during off-season training?
0-10 vs. 11-20	0.88	(0.62, 1.25)
21-30 vs. 11-20	1.77	(1.26, 2.49)
31-40 vs. 11-20	1.74	(1.02, 2.98)
41+ vs. 11-20	1.86	(1.02, 3.40)
What is your most common running pace in minutes per mile?
< 7:00 vs. 9:00-9:59	0.46	(0.15, 1.38)
7:00-7:59 vs. 9:00-9:59	1.59	(0.94, 2.71)
8:00-8:59 vs. 9:00-9:59	0.99	(0.69, 1.42)
10:00-10:59 vs. 9:00-9:59	0.71	(0.49, 1.04)
11:00-11:59 vs. 9:00-9:59	0.43	(0.26, 0.73)
12:00+ vs. 9:00-9:59	0.54	(0.31, 0.94)
Who guides your running plan?
Coach Yes vs. No	1.40	(1.01, 1.94)
Cross-training activities you participate in.
Cycling Yes vs. No	1.51	(1.16, 1.97)
Hiking Yes vs. No	0.72	(0.55, 0.94)
Have you ever been medically diagnosed with any of the following injuries as a result of running?
Shin splints Yes vs. No	3.24	(2.38, 4.39)
Tendon injury Yes vs. No	1.47	(1.07, 2.01)
Have you ever been diagnosed with any of the following medical issues?
Asthma Yes vs. No	1.43	(1.01, 2.02)
Osteopenia Yes vs. No	4.14	(2.38, 7.17)
Do you take any of the following medications on a regular basis (at least 3 times per week)?
Allergy medication Yes vs. No	0.42	(0.18, 0.97)
Do you take any of the following supplements on a regular basis (at least 3 times per week)?
Calcium Yes vs. No	1.78	(1.25, 2.55)
Omega-3s Yes vs. No	0.51	(0.35, 0.74)
Probiotics Yes vs. No	1.47	(1.05, 2.05)
Vitamin D Yes vs. No	1.54	(1.11, 2.15)
How old were you when you had your first menstrual period?
≤12 yrs old vs. 13-15 yrs old	0.81	(0.61, 1.06)
≥16 yrs old vs. 13-15 yrs old	1.62	(0.93, 2.80)
Have you ever gone 6 months or more without a period other than during pregnancy?
Yes vs. No	1.45	(1.10, 1.91)