The relationship between spinal pain and temporomandibular joint disorders in Korea: a nationwide propensity score-matched study

Table 3 Prevalence of Spinal Pain of Cases and Controls According to TMD Grade

	Total	Non-spinal pain		Spinal pain		p-value^b
	Total	N	%^a	N	%^a	p-value^b
TMD total
Control	12,375	8148	65.8	4227	34.2
Case	12,375	6411	51.8	5964	48.2	<.0001
TMD grade 1^c
Control	10,951	7224	66.0	3727	34.0
Case	10,951	5828	53.2	5123	46.8	<.0001
TMD grade 2^d
Control	910	589	64.7	321	35.3
Case	910	392	43.1	518	56.9	<.0001
TMD grade 3^e
Control	514	335	65.2	179	34.8
Case	514	191	37.2	323	62.8	<.0001
Difference test between TMD grades^f						<.0001

^aDenominator: Total TMD patients number or total case/control number by each grade
^bAnalysis of difference in spinal pain frequency according to TMD retention by using McNemar test
^cTMD grade 1: Outpatient days due to TMD, fewer than 6
^dTMD grade 2: Outpatient days due to TMD, more than 6 and fewer than 12
^eTMD grade 3: Outpatient days due to TMD, more than 12 or use of hospitalization services
^fAnalysis of difference in spinal pain frequency between each TMD grades by using Chi-square test
TMD Temporomandibular Disorder

ISSN: 1471-2474