Table 3.
Sample distribution in accordance with the predominant rhythm of the BRIAN-K scale (questions 18, 19, and 20) and the respective comparisons for the overall sample and between groups
| BRIAN-K | Overall (N = 178) |
Without possible sleep bruxism (N = 101) |
Sometimes possible sleep bruxism (N = 41) |
Frequent possible sleep bruxism (N = 36) |
Between groups Test; P values |
|
|---|---|---|---|---|---|---|
|
Question 18 More willing/active [n (%)] |
Morning | 33 (18.54) | 16 (15.84) | 8 (19.51) | 9 (25.00) |
χ2 P = 0.812 |
| Afternoon | 51 (28.65) | 31 (30.69) | 13 (31.71) | 7 (19.44) | ||
| Night | 37 (20.79) | 22 (21.78) | 8 (19.51) | 7 (19.44) | ||
| No specific shift | 57 (32.02) | 32 (31.68) | 12 (29.27) | 13 (36.11) | ||
| χ2 (P values) | P = 0.0336 | P > 0.05 | P > 0.05 | P > 0.05 | ||
|
Question 19 More concentrated/ productive [n (%)] |
Morning | 62 (34.83) | 37 (36.63) | 12 (29.27) | 13 (36.11) |
Fisher’s exact test P = 0.685 |
| Afternoon | 65 (36.52) | 40 (39.60) | 13 (31.71) | 12 (33.33) | ||
| Night | 22 (12.36) | 11 (10.89) | 7 (17.07) | 4 (11.11) | ||
| No specific shift | 29 (16.29) | 13 (12.87) | 9 (21.95) | 7 (19.44) | ||
| χ2 (P values) | P < 0.0001 | P < 0.0001 | P > 0.05 | P > 0.05 | ||
|
Question 20 Change day to night [n (%)] |
Never | 122 (68.54) | 75 (74.26) | 23 (56.10) | 24 (66,67) |
Fisher’s exact test P = 0.130 |
| Seldom | 39 (21.91) | 18 (17.82) | 15 (36.59) | 6 (16.67) | ||
| Often | 10 (5.62) | 4 (3.96) | 2 (4.88) | 4 (11.11) | ||
| Always | 7 (3.93) | 4 (3.96) | 1 (2.44) | 2 (5.56) | ||
| χ2 (P values) | P < 0.0001 | P < 0.0001 | P < 0.0001 | P < 0.001 |
χ2 chi square; corresponding P values in each column mean intra-group comparison for proportions (χ2 adherence)