Back and neck pain: A comparison between acute and chronic pain–related Temporomandibular Disorders

Figures & data

Table 1. Comparison between acute and chronic pain–related TMD groups based on the sample characteristics.

	Category	Acute painful TMD^a (n = 118)	Chronic painful TMD^b (n = 369)	P value	Missing data, n (%)
Back pain, n (%)	No Yes	75 (64.10) 42 (35.90)	190 (51.49) 179 (48.51)	‎‎0.017‎‎	‎20 (4.1)‎
Neck pain, n (%)‎	No Yes	81 (68.64) 37 (31.36)	182 (49.49) 185 (50.41)	<0.001	21 (4.3)
Age	Mean (SD)	42.82 (16.63)	42.36 (16.35)	0.79	‎19 (3.9)‎
Sex, n (%)‎	Male Female	37 (31.36) 81 (68.64)	81 (21.95) 288 (78.05)	0.038	19 (3.9)
City, n (%)‎	Montreal Ottawa	86 (72.88) 32 (27.12)	289 (78.32) 80 (21.68)	0.22	19 (3.9)
Graded Chronic Pain Scale, n (%)‎	Grade I Grade II Grade III Grade IV	33 (27.97) 35 (29.66) 21 (17.80) 29 (24.58)	110 (29.81) 133 (36.05) 54 (14.63) 72 (19.51)	0.34	19 (3.9)
Anxiety, n (%)‎	No Yes^c	50 (42.74) 67 (57.26)	130 (35.23) 239 (64.77)	0.14	‎20 (4.1)‎
Depression, n (%)‎	No Yes^d	41 (35.04) 76 (64.96)	73 (19.78) 296 (80.22)	<0.001	20 (4.1)

^a≤3 months.

^b>3 months.

^cGAD-7 score ≥5.

^dPHQ-8 score ≥5.

Figure 1. Flowchart showing the recruitment‎ process.

Table 2. The association between neck and back pain and chronic^a relative to acute^b pain–related TMDs defined by pain duration.

		Crude		Adjusted^c
	Category	Odds ratios	95% CI	OR	95% CI
Back pain	No Yes	1 1.68*	Reference 1.10–2.58	1 0.96	Reference 0.57–1.64
Neck pain	No Yes	1 2.23*	Reference 1.43–3.45	1 2.17*	Reference 1.27–3.71
Age		1.05	0.66–1.67	1.00	0.99–1.01
Sex	Male Female	1 1.62*	Reference 1.03–2.57	1 1.51	Reference 0.93–2.44
Anxiety	No Yes^d	1 ‎1.26 ‎	Reference ‎0.83–1.92	1 0.97	Reference 0.59–1.60
Depression	No Yes^e	1 2.19*	Reference 1.38–3.46	1 2.08*	Reference 1.21–3.58

^a>3 months.

^b≤3 months.

^cAdjusted for age, sex, and anxiety and depression symptoms,

^dGAD-7 score ≥5,

^ePHQ-8 score ‎≥5,

*P < 0.05.

Table 3. The association between neck and back pain and chronic^a relative to non-chronic^b pain–related TMDs defined by pain-related disability.

		Crude		Adjusted ^c
	Category	OR	95% CI	OR	95% CI
Back pain	No Yes	1 1.59*	Reference 1.09–2.30	1 1.13	Reference 0.69–1.82
Neck pain	No Yes	1 1.82*	Reference 1.25–2.65	1 1.95*	Reference 1.20–3.17
Age		0.99	0.98–1.00	0.99	0.98–1.00
Sex	Male Female	1 0.87	Reference 0.57–1.32	1 0.82	Reference 0.52–1.30
Anxiety	No Yes^d	1 3.29*	Reference 2.22–4.88	1 2.43*	Reference 1.51–3.90
Depression	No Yes^e	1 2.51*	Reference 1.59–3.97	1 1.85*	Reference 1.04–3.29
Acute/chronic pain–related TMD status	Acute^f Chronic^g	1 0.75	Reference 0.50–1.13	1 0.51*	Reference 0.32–0.81

^aGCPS Grades III–IV.

^bGCPS Grades I–II.

^cAdjusted for age, sex, anxiety and depression symptoms, and acute/chronic painful TMD status.

^dGAD-7 score ≥5.

^ePHQ-8 score ‎≥5.

^f>3 months.

^g≤3 months.

*P < 0.05.