Table 6.

Multivariate ordinal logistic regression analysis for possible sleep bruxism as the dependent variable, and variables related to sleep, screen time, sugary food consumption, and clenching teeth as the independent variables

Model coefficients—possible sleep bruxism (order: without, sometimes, frequent)
						95% confidence interval
Predictor	Estimate	SE	Z	P	OR	Lower	Upper
First domain–sleep	0.184	0.062	2.969	0.003	1.20	1.07	1.36
Second domain–routine activities	0.024	0.060	0.404	0.686	1.03	0.91	1.15
Third domain–social rhythm	− 0.035	0.081	− 0.429	0.668	0.97	0.82	1.13
Fourth domain–eating pattern	− 0.005	0.067	− 0.075	0.940	1.00	0.87	1.13
Q 18: More willing/active
Afternoon–morning	− 0.749	0.491	− 1.527	0.127	0.47	0.18	1.24
Night–morning	− 0.979	0.571	− 1.716	0.086	0.38	0.12	1.14
No specific shift–morning	− 0.413	0.458	− 0.903	0.366	0.66	0.27	1.63
Q 19: More concentrated/productive
Afternoon–morning	− 0.375	0.422	− 0.888	0.375	0.69	0.30	1.57
Night–morning	− 0.759	0.609	− 1.247	0.212	0.47	0.14	1.52
No specific shift–morning	0.375	0.470	0.798	0.425	1.46	0.58	3.67
Q 20: Change day to night
Seldom–never	0.209	0.412	0.506	0.613	1.23	0.55	2.77
Often–never	0.915	0.752	1.217	0.224	2.50	0.56	11.06
Always–never	0.222	0.846	0.263	0.793	1.25	0.21	6.37
Breathing:
Mouth–nose	0.122	0.332	0.366	0.714	1.13	0.59	2.16
Children’s bedroom lights:
No–yes	0.340	0.343	0.990	0.322	1.41	0.72	2.76
Noisy places near the children’s house
No–yes	− 0.084	0.354	− 0.237	0.813	0.92	0.46	1.85
Screen time–working days (hs)	− 0.007	0.011	− 0.637	0.524	0.99	0.97	1.01
Screen time–weekend (hs)	− 0.036	0.026	− 1.372	0.170	0.97	0.92	1.02
Sugary food consumption before bedtime
No–yes	− 0135	0.342	− 0.396	0.692	0.87	0.44	1.7
Clenching teeth during wakefulness
Yes–no	0.710	0.360	1.975	0.048	2.04	1.00	4.13

Nagelkerke’s (R²N) = 0.114, VIF 1.04–1.37, Tolerance 0.73–0.96, Proportional odds P > 0.05, SE standard error, OR odds ratio

Significant P-values are in bold fonts.