Table 2. Reliability estimates.

GTQ	Internal consistencya	Test-retestb
		ICC
Jaw related problems	0,94	0.98
Eating limitation	0,87	0.97
Muscular tension	0,74	0.95
Facial pain	0,96	0.98

^a Cronbach’s alpha.

^b Test-retest sample size n = 29.

ICC = Intra-class correlation coefficient.