Temporomandibular Disorders and Headache: A Retrospective Analysis of 1198 Patients

Table 4

-squared value of correlation between presence and intensity of headache and presence and intensity of muscle, joint, and/or cervical ipsilateral pain and between presence of headache and presence of parafunctional habits.

	-squared presence	-squared intensity
Ipsilateral headache and joint pain	24.3216	59.1496
	Ipsilateral headache and muscle pain	22.1273	27.4131
Ipsilateral headache and cervical pain		97.3326	81.3128
	Parafunctional habits	42.7842	—