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. 2021 Apr 24;3:100035. doi: 10.1016/j.sleepx.2021.100035

Table 2.

Correlation between screen-time and sugar consumption with possible sleep bruxism. Spearman correlation (Rho and p values).

Sleep Bruxism
Rho p value
Never-Rarely
(0–1 nights)
Sometimes
(2–4 nights)
Usually
(5–7 nights)
Sugar consumption (n/%)
Never 0 0 0 0.7 0.03
Less than once a week 10 (2.27) 1 (0.22) 1 (0.22)
1 day/week 4 (0.90) 2 (0.45) 6 (1.36)
2–4 days a week 2 (0.45) 1 (0.22) 1 (0.22)
5–6 days/week 2 (0.45) 1 (0.22) 2 (0.45)
Once a day 65 (14.77) 183 (41.59) 71 (16.13)
More than once a day 6 (1.36) 36 (8.18) 46 (10.45)
Screen-time (Hours per day/SD)
Weekdays 1.18 (1.31) 1.38 (0.45) 3.35 (1.62) 0.8 0.002
Weekend days 1.30 (1.23) 3.35 (1.24) 4.23 (1.26)
Screen-time index 1.15 (1.03) 2.36 (1.89) 3.79 (1.85)