Table 4.

Test group 2 (Internet-phone), test-retest reliability for running habits, injuries, and general health.

Test-retest reliability		n	Number of response options	Kappa (A-symp SE)
Running habits and injuries
	How many years have you been running on a regular basis? Regular is defined as at least weekly.	30	11	.639 (.102)
	On average, how many kilometer per week would you run?	30	7	.540 (.108)
	What type of terrain is the majority of your running performed on?	30	7	.469 (.129)
	In the last 2 years, have you participated in any other sports or intentional exercise on a regular basis (eg, weekly during at least one season)?	29a	2	.473 (.306)
	In the last 2 years, have you had any injuries of the lower limbs, which have forced you to discontinue running for a period of 2 weeks or more?	30	2	.930 (.069)
	If yes, how many lower limb injuries have you been diagnosed with in the last 2 years?	10b	4	.697 (.187)
	Was the injury diagnosed by a professional doctor?	9c	2	.727 (.247)
	Was the injury diagnosed by a professional physiotherapist?	10b	2	.615 (.337)
	Was the injury an Achilles tendon injury?	11d	2	.814 (.175)
	Was the injury a bone stress injury below the knee?	6e	2	.571 (.353)
	Have you ever had hip, knee, or ankle surgery?	30	2	>.99
	While running do you wear orthotics?	30	2	>.99
General health
	Have you ever smoked cigarettes?	30	2	.839 (.157)
	To your knowledge, have you ever been treated using quinolone antibiotics (eg, ciprofloxacin, norfloxacin)?	27f	3	.150 (.132)
	To your knowledge, have you ever been treated using corticosteroid medication?	30	3	.583 (.124)
	To your knowledge, have you ever been treated using calcium tablets as prescribed by a medical doctor or taken it without a prescription?	30	3	.720 (.184)
	To your knowledge, have you ever been treated using vitamin D supplementation as prescribed by a medical doctor or taken it without prescription?	30	3	.672 (.170)
	Do you follow a gluten-free diet?	30	2	.783 (.209)
	Do you have any food allergies or avoidances?	29a	2	.922 (.077)

^an=30; valid=29; excluded=1

^bn=30; valid=10; excluded=20

^cn=30; valid=9; excluded=21

^dn=30; valid=11; excluded=19

^en=30; valid=6; excluded=24

^fn=30; valid=27; excluded=3