All general linear combined designs put many years, gender, Bmi, household members income, battle, and you will physical activity since covariates, and you may taken into account evaluation website and you can family members nesting of men and women. We first tested the fresh new dating off son stress and you can kid depression so you’re able to total EMU, because shown from inside the Dining table dos. Child report out of weekday EMU and both child and you will moms and dad report from sunday EMU was notably with the stress symptoms. Having anxiety, each other guy and mother statement of both weekday and you may week-end EMU was notably for the depression. We 2nd questioned whether or not either child or mother or father advertised EMU went on as with the nervousness just after handling getting depression. No EMU measure presented a significant reference to nervousness attacks when dealing with to own depression. All of the profile out of EMU remained notably about despair whenever managing to own anxiety, aside from guy declaration of weekday EMU. Regarding notice, even though many of your connections had been tall, the effect models were apparently quick.
We next conducted a generalized linear mixed model with all four EMU reports as 
predictors of anxiety, and the same covariates described above. In this model, parent weekend report of general EMU was a significant independent predictor of anxiety (t =3.43, p =0.001). However, when depression was added as a covariate, none of the EMU measures significantly predicted anxiety. For depression, child weekend EMU report and parent weekend EMU report were each significantly related to depression (t = 2.38, p = 0.017 and t = 3.79, p < 0.001 respectively), while neither weekday EMU report had significant relation to depression. When anxiety was added as a covariate, parent weekend EMU continued to be a significant independent predictor (t = 2.13, p = 0.034).
Sex Variations
We analyzed whether sex moderated any of the relationships between EMU report and either anxiety or depression. The only significant interaction with sex was for child report of weekend EMU predicting anxiety (t = ? 3.51, p < .001). Looking at separate mixed models for boys and girls, boys' weekend EMU was significantly associated with anxiety symptoms (t = 4.88, p < .001), but girls' weekend EMU was not (Table 3). For depression, no measures of EMU demonstrated sex differences.
Depression and Anxiety while the a purpose of EMU
At exactly the same time, to look at whether the proportions of children who came across “clinical” cutoffs into anxiety and you may stress methods (T many 65 otherwise significantly more than) differed while the a purpose of EMU, i presented extra analyses using Chi-square examination to look at commission of children above the medical cutoff to possess anxiety and you may nervousness because a purpose of number of EMU. The range of electronic mass media explore varied to your weekdays as opposed to this new weekend. Therefore, to possess weekday (one another moms and dad and you will man records), we grouped EMU by 0 so you’re able to 60 minute (up to 1 h), sixty so you’re able to 120 min (one to two h), 120 so you’re able to 180 minute (2-3 h) and you will greater than 180 min (over step three h). To have week-end (both parent and you may boy accounts), we grouped EMU of the 0 to 120 minute (as much as 2 h), 120 so you can 240 minute (2 to 4 h), 240 in order to 360 minute (four to six h) and you may higher than 360 minute (more six h). Because the found within the Extra Table step 3, new Chi square studies is actually tall for every single combination of class out of EMU declaration and you may each other depression and you may anxiety on the overall take to. About most of cases, the newest percentage of students above the health-related cutoffs for both anxiety and you will anxiety are close to double (or maybe more) within lowest category of EMU plus the highest category of EMU for kid and you will parent report and one another nervousness and you can depression, which have a fairly linear increase across levels of EMU. Just like the noted over, really the only telecommunications which have intercourse and you may EMU we discovered try to own week-end EMU forecasting anxiety. While the revealed within the Extra Table cuatro, having people, the newest Chi-square study was once again high per blend of group of EMU report and you will each other anxiety and stress, once more with an almost so you can increasing away from part of men a lot more than this new logical cutoffs on the highest in place of lowest EMU fool around with categories. As the found in the Extra Desk 5, for girls, the fresh new designs had been equivalent to have despair for father or mother and you may man advertised EMU, which have extreme Chi Squares for moms and dad EMU profile, but with complete lower levels regarding depression. Having nervousness, new designs was indeed even more variable towards the next highest EMU level showing develops within the rates of kids above clinical cutoffs in the most common instances, but the high levels either dropping down again. Such other models to have girls and boys having stress was basically uniform to your number 1 performance displayed from the text.
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