Table 5 Results of multiple linear regression models between comorbidities and TMD pain intensity in participants in the m-TMD group (n = 121)

TMD intensity (0–10)

Number of comorbidity

0.63 (0.31 – 0.95),

0.60 (0.25 – 0.94),

0.62 (0.27 – 0.95),

p < 0.01, r² = 0.11

p < 0.01, r² = 0.13

p < 0.01, r² = 0.13

Migraine

1.45 (0.64 – 2.25),

1.08 (0.21 – 1.95),

1.08 (0.23 – 1.93),

p < 0.01, r² = 0.10

p < 0.05, r² = 0.18

p < 0.05, r² = 0.18

Chronic Fatigue Syndrome

1.82 (0.81 – 2.85),

1.42 (0.29 – 2.54),

1.42 (0.30 – 2.53),

p < 0.01, r² = 0.10

p < 0.05, r² = 0.18

p < 0.05, r² = 0.18

Irritable Bowel Syndrome

0.36 (−0.56 – 1.27)

−0.05 (−0.97 – 0.87)

−0.05 (−0.97 – 0.87)

p = 0.44, r² = 0.01

p = 0.91, r² = 0.18

p = 0.91, r² = 0.18

Interstitial Cystitis

1.36 (0.18 – 2.55)

0.71 (−0.56 – 1.98)

0.70 (−0.56 – 1.97)

p = 0.03, r² = 0.04

p = 0.27, r² = 0.18

p = 0.27, r² = 0.18

Restless Leg Syndrome

0.61 (−0.51 – 1.74)

−0.12 (−1.25 – 0.99)

−0.13 (−1.24 – 0.99)

p = 0.28, r² = 0.01

p = 0.82, r² = 0.18

p = 0.82, r² = 0.18