2016
DOI: 10.1016/j.ypmed.2015.11.019
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Effects of clustering of multiple lifestyle-related behaviors on blood pressure in adolescents from two observational studies

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Cited by 8 publications
(15 citation statements)
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“…Sleep time was estimated through habitual sleep duration by questions: “ During weekdays how many hours (or minutes) do you usually sleep?” and “During weekend days how many hours (or minutes) do you usually sleep?” A subsample of 183 adolescents (13–18 years old) answered the questionnaire twice, one week apart to evaluate the reliability and reproducibility of these questions. Excellent agreement showed by the Cohen’s weighted kappa of 0.81 during weekdays and 0.96 during weekend days 32,33 . In the final HELENA study sample this subsample did not participate, but also did not differ in age, ethnicity or socioeconomic status.…”
Section: Independent Variablesmentioning
confidence: 82%
“…Sleep time was estimated through habitual sleep duration by questions: “ During weekdays how many hours (or minutes) do you usually sleep?” and “During weekend days how many hours (or minutes) do you usually sleep?” A subsample of 183 adolescents (13–18 years old) answered the questionnaire twice, one week apart to evaluate the reliability and reproducibility of these questions. Excellent agreement showed by the Cohen’s weighted kappa of 0.81 during weekdays and 0.96 during weekend days 32,33 . In the final HELENA study sample this subsample did not participate, but also did not differ in age, ethnicity or socioeconomic status.…”
Section: Independent Variablesmentioning
confidence: 82%
“…A potential confounder was retained in the multivariate model when the significance level in the unadjusted analysis was P ≤ 0.20 or any change of 10% in the variance estimation. The exception was city; the variable was retained in all adjusted models based on the theoretical assumption of the influence in the PA levels . In the multivariate analysis, potential confounders were allocated according to the following sequence: Model 0: city; Model 1: Model 0 plus school; Model 2: Model 1 plus sex and age (Table ).…”
Section: Methodsmentioning
confidence: 99%
“…The studies were developed in 29 different countries, the majority were carried out in USA (n = 6), Brazil (n = 6), and Australia (n = 4), and five [6,11,34,35,50] provided data from more than one country. Regarding country income, 35 studies [11,[23][24][25][26][27]29,30,[32][33][34][35][36][37][38]40,[43][44][45][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61] were developed in high-income countries, followed by six [31,39,41,42,46,62] in upper middle-income countries, and one [6] involved data on countries with more than one income. The age group ranged from two [50,63] to nineteen…”
Section: Characteristics Of Sources Of Evidencementioning
confidence: 99%
“…The age group ranged from two [50,63] to nineteen [13,42] years. Most studies exclusively investigated adolescents (n = 23) [23][24][25][26]28,31,32,34,35,37,[39][40][41][42][45][46][47][48]55,57,59,60,62], nine [6,29,30,33,38,43,49,51,54] both children and adolescents, and seven (n = 7) [11,44,50,52,53,58,61] only children. In three studies [27,36,56], the sample was composed of children/adolescents but did not report the age group.…”
Section: Characteristics Of Sources Of Evidencementioning
confidence: 99%