TABLE 2.
Frequency data expressed in percentage of positive observation (mean values, range and coefficient of variation) for the different awake bruxism (AB) behaviours over the 7‐day observation period
| Activity | Mean frequency (SD) | Range | Daily mean frequency | CV | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| D1 | D2 | D3 | D4 | D5 | D6 | D7 | ||||
| Relaxed jaw muscles | 76.4 (20.8) | 6.5–100 | 72.6 (22.0) | 73.4 (23.3) | 75.4 (24.4) | 76.7 (23.4) | 78.3 (23.9) | 78.2 (24.1) | 79.4 (24.1) | 0.27 |
| Teeth contact | 13.6 (14.2) | 0–77.9 | 15.1 (14.8) | 14.5 (15.9) | 13.6 (17.7) | 13.5 (16.6) | 13.1 (17.9) | 12.7 (17.9) | 11.9 (17.6) | 1.05 |
| Mandible bracing | 7 (12.5) | 0–92.8 | 8.27 (14.1) | 8.02 (13.8) | 7.2 (14.1) | 6.3 (13.7) | 5.9 (13.1) | 6.2 (14.2) | 5.9 (13.6) | 1.81 |
| Teeth clenching | 2.5 (4.5) | 0–19.9 | 2.8 (9.5) | 2.1 (7.7) | 3.3 (8.11) | 2.1 (5.0) | 2.0 (6.4) | 1.6 (5.8) | 1.8 (5.6) | 1.87 |
| Teeth grinding | 0.5 (1.7) | 0–17.7 | 0.5 (2.2) | 0.5 (2.4) | 0.7 (3.0) | 0.3 (2.1) | 0.2 (1.9) | 0.2 (2.12) | 0.6 (2.9) | 4.25 |
Abbreviations: CV, coefficient of variation; SD, standard deviation.
Note: Mean frequency value is the number of positive responses for each specific behaviour per reporting period. For instance, a mean of 76.4% for the condition ‘relaxed Jaw muscles’ can be interpreted as equivalent to the report of 76.4% ‘Relaxed jaw muscles’ per 100 reporting alerts, meaning that, on average, each subject answered ‘relaxed Jaw muscles’ to 76.4% of the alerts, generalising from the random EMA sampling, with a minimum of 6.5% by at least 1 subject and a maximum of 100% by at least one subject.
Coefficient of variation (CV) is expressed as the ratio between SD and mean values of frequency data over the 7 recordings day for each condition.