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

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

 TotalNon-spinal painSpinal painp-valueb
N%aN%a
TMD total
 Control12,375814865.8422734.2 
 Case12,375641151.8596448.2<.0001
TMD grade 1c
 Control10,951722466.0372734.0 
 Case10,951582853.2512346.8<.0001
TMD grade 2d
 Control91058964.732135.3 
 Case91039243.151856.9<.0001
TMD grade 3e
 Control51433565.217934.8 
 Case51419137.232362.8<.0001
Difference test between TMD gradesf   <.0001
  1. aDenominator: Total TMD patients number or total case/control number by each grade
  2. bAnalysis of difference in spinal pain frequency according to TMD retention by using McNemar test
  3. cTMD grade 1: Outpatient days due to TMD, fewer than 6
  4. dTMD grade 2: Outpatient days due to TMD, more than 6 and fewer than 12
  5. eTMD grade 3: Outpatient days due to TMD, more than 12 or use of hospitalization services
  6. fAnalysis of difference in spinal pain frequency between each TMD grades by using Chi-square test
  7. TMD Temporomandibular Disorder