Analysis
We included all participants who completed the sleep and SM use items in our analyses. We conducted all primary analyses using survey weights, which were calculated by GfK and applied using a post-stratification adjustment based on sociodemographic benchmark distributions. We used descriptive statistics to characterize the demographic features of the weighted sample and to determine the level of sleep disturbance and SM use frequency and volume reported by our participants.
We used chi-square tests to determine whether participants in each sleep disturbance group (low, medium, high) differed significantly on level of SM use (volume and frequency) and covariates.
We used ordered logistic regression to examine associations among each SM use variable and sleep disturbance, with the lowest level of each social media variable (Q1 for each variable) serving as the reference group.
We first conducted this analysis without covariates, and then we conducted