Table 2.
Clinical and Health Status Variables: Change Scores* (SEM) across Groups from Baseline to Follow-Up
| Baseline Classification | Non-TMD | Incident-TMD | Chronic-TMD | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Follow-Up Classification | Non-TMD | a | TMD | a | b | Non-TMD | a | b | TMD | a | b | Non-TMD | a | b | TMD | a | b |
| # Palpation Sites (0–14) | 2.2 (0.4) | X | 4.1 (0.8) | X | 3.5 (0.9) | X | 4.6 (0.8) | X | X | 1.5 (0.7) | X | 1.1 (0.5) | X | ||||
| Assisted Opening (mm) | −2.1 (0.4) | X | −2.0 (0.9) | X | −1.6 (1.0) | −3.7 (0.9) | X | −0.9 (0.8) | −0.5 (0.5) | X | |||||||
| Unassisted Opening (mm) | −2.1 (0.4) | X | −2.5 (0.9) | X | −1.7 (1.0) | −5.8 (1.0) | X | X | 0.0 (0.8) | X | −0.3 (0.5) | X | |||||
| Pain−Free opening (mm) | −2.5 (0.7) | X | −6.2 (1.6) | X | −2.7 (1.8) | −9.0 (1.6) | X | X | 3.8 (1.4) | X | X | −0.3 (0.9) | X | ||||
| JFLS-Chewing (0–10) | 0.1 (0.1) | 1.3 (0.3) | X | X | 0.1 (0.3) | 1.0 (0.3) | X | X | −1.0 (0.2) | X | −0.4 (0.2) | X | X | ||||
| JFLS-Opening (0–10) | 0.2 (0.1) | 1.2 (0.3) | X | X | 0.3 (0.3) | 0.8 (0.3) | X | −1.0 (0.2) | X | −0.3 (0.2) | X | ||||||
| JFLS-Verbal (0–10) | 0.1 (0.2) | 0.6 (0.2) | X | −0.1 (0.3) | 0.2 (0.2) | −0.8 (0.2) | X | −0.3 (0.1) | X | ||||||||
| JFLS-Total (0–10) | 0.1 (0.1) | 1.0 (0.2) | X | X | 0.1 (0.2) | 0.7 (0.2) | X | −0.9 (0.2) | X | X | −0.3 (0.1) | X | X | ||||
| OBC-Total (0–84) | 0.7 (0.9) | 9.3 (2.1) | X | X | 0.1 (2.2) | 9.8 (2.1) | X | X | −3.4 (1.7) | 0.0 (1.2) | |||||||
| Non-Specific Jaw Symptoms (0–6) | 0.3 (0.1) | X | 1.4 (0.3) | X | −0.03 (0.3) | 2.2 (0.3) | X | −2.2 (0.2) | X | −0.9 (0.2) | X | ||||||
| SF12 Physical Health (0–100) | 0.0 (0.8) | −4.3 (1.8) | X | 1.2 (1.9) | −2.0 (1.9) | 2.2 (1.5) | 2.4 (1.0) | X | |||||||||
| SF12 Mental Health (0–100) | 0.4 (1.0) | −3.2 (2.2) | 2.1 (2.4) | −2.6 (2.4) | 0.5 (1.9) | 0.5 (1.3) | |||||||||||
| PSQI Total (0–21) | 0.5 (0.3) | 3.2 (0.7) | X | 1.2 (0.7) | 1.2 (0.7) | 0.5 (0.6) | 0.6 (0.4) | ||||||||||
Change scores computed by subtracting Baseline value from Follow-Up value, such that positive change scores indicate increased values at follow-up. All means are unadjusted.
JFLS=Jaw Function Limitation Scale; OBC=Oral Behaviors Checklist; SF12=Short Form 12; PSQI=Pittsburgh Sleep Quality Inventory
The “a” column indicates whether or not the change score was statistically different from 0 for that study group at p < 0.05, adjusting for demographics and study site.
The “b” column indicates whether or not the change score for that study group differed significantly from the change score for the reference group (Non-TMD/Non-TMD) at p < 0.05, adjusting for demographics and study site.