Table 3 Results of multiple linear regression models comparing between comorbidities and TMD pain intensity in the combined TMD group (n = 180)

TMD intensity (0–10)

Number of comorbidities

0.57 (0.27 – 3.95)

0.46 (0.14 – 0.78)

0.46 (0.15 – 0.78)

p < 0.01, r² = 0.07

p < 0.01, r² = 0.10

p < 0.01, r² = 0.10

Migraine

1.43 (0.71 – 2.15)

1.02 (0.20 – 1.84)

1.08 (0.30 – 1.87)

p < 0.01, r² = 0.08

p < 0.05, r² = 0.15

p < 0.01, r² = 0.14

Chronic Fatigue Syndrome

1.85 (0.83 – 2.88)

1.07 (−0.03 – 2.19)

1.12 (0.03 – 2.22)

p < 0.01, r² = 0.07

p = 0.06, r² = 0.15

p < 0.05, r² = 0.14

Irritable Bowel Syndrome

0.66 (−0.167 –1.48)

0.10 (−0.73 – 0.94)

0.10 (−0.73 – 0.93)

p = 0.12, r² = 0.01

p = 0.81, r² = 0.15

p = 0.81, r² = 0.14

Interstitial Cystitis

1.40 (0.28 –2.52)

0.85 (−0.36 – 2.07)

0.86 (−0.34 – 2.07)

p = 0.01, r² = 0.03

p = 0.16, r² = 0.15

p = 0.16, r² = 0.14

Restless Leg Syndrome

−0.21 (−1.21 – 0.79)

−0.87 (−1.89 – 0.15)

−0.90 (−1.91 – 0.11)

p = 0.68, r² = 0.001

p = 0.09, r² = 0.15

p = 0.08, r² = 0.14