Table 4.
QST and Cardiovascular 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 |
| Heat Pain Tolerance (°C) | −0.3 (0.2) | 0.3 (0.4) | −1.0 (0.5) | X | −0.3 (0.4) | −0.4 (0.4) | −0.02 (0.3) | ||||||||||
| Heat Temporal Summation (0–100) | −5.2 (3.1) | −6.5 (8.6) | 3.5 (8.4) | −3.4 (7.4) | 5.1 (6.4) | 3.5 (4.6) | |||||||||||
| Heat Pain Aftersensation (0–100) | −0.5 (1.7) | 5.8 (4.3) | −12.4 (4.8) | X | 4.0 (4.1) | −1.3 (3.6) | −2.4 (2.6) | ||||||||||
| Mechanical Pain Threshold (mN) | −23.2 (14.5) | −58.7 (34.6) | −70.3 (37.4) | −141.0 (35.6) | X | X | −29.1 (29.6) | −2.0 (20.0) | |||||||||
| Mechanical Temporal Summation (0–100) | 7.1 (1.8) | X | 7.0 (4.2) | 7.6 (4.6) | 6.8 (4.1) | 7.9 (3.5) | 3.0 (2.4) | ||||||||||
| Mechanical Pain Aftersensation (0–100) | −0.3 (1.3) | 0.6 (3.2) | 1.0 (3.5) | 2.0 (3.1) | 3.9 (2.6) | −2.1 (1.8) | |||||||||||
| PPT Temporalis (kPa) | −17.3 (6.0) | X | −62.5 (14.4) | X | X | −44.1 (15.4) | X | −74.9 (14.3) | X | X | −17.4 (12.5) | −11.7 (8.4) | |||||
| PPT Masseter (kPa) | −19.5 (5.4) | X | −51.0 (13.0) | X | −58.1 (13.8) | X | X | −75.5 (12.9) | X | X | −6.8 (11.3) | −9.9 (7.6) | |||||
| PPT TMJ (kPa) | −14.5 (5.2) | X | −56.8 (12.5) | X | X | −44.7 (13.2) | X | −59.2 (12.4) | X | X | −5.1 (11.0) | −8.0 (7.2) | |||||
| PPT Trapezius (kPa) | −29.6 (12.8) | X | −78.6 (30.3) | X | −64.5 (32.5) | X | −96.2 (31.0) | X | −4.6 (26.6) | −24.9 (18.0) | |||||||
| PPT Lateral Epicondyle (kPa) | −43.1 (11.5) | X | −96.0 (27.2) | X | −104.2 (29.3) | X | −90.2 (27.5) | X | −32.8 (23.9) | −51.7 (16.1) | X | ||||||
| Resting Heart Rate (bpm) | 1.3 (0.8) | −0.5 (2.0) | 1.3 (2.1) | 1.0 (2.0) | −0.7 (1.7) | −0.4 (1.1) | |||||||||||
| Resting Systolic Blood Pressure (mmHg) | 6.9 (1.1) | X | 10.5 (2.5) | X | 3.9 (2.7) | 9.9 (2.5) | X | 5.8 (2.2) | X | 6.8 (1.5) | X | ||||||
*
Change scores computed by subtracting Baseline value from Follow-Up value, such that positive change scores indicate increased values at follow-up.
PPT=Pressure Pain Threshold; TMJ=Temporomandibular Joint
a
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.
b
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.