Louis-Alexandre At each and every research collection timepoint (BL, FU1, and you may FU2), one or two 24-h fat reduction recalls from the one or two separate domestic visits had been did contained in this 30 days off accelerometer evaluation by using the Diet Analysis Program to possess Lookup (NDSR) . Examination have been conducted on a single weekend date and something weekday contained in this an equivalent month because of the coached interviewers whom held just one 24-h slimming down remember into youngster inside the/their preferred code (Spanish/English). The newest interviewers collected fat reduction research having fun with laptop computers equipped with NDSR, a nutritional analysis program available for the collection and you may analyses off 24-h weight reduction recalls, eating suggestions, menus and you can recipes . Interviewers conducted brand new weight reduction remembers with regards to the encourages supplied by the NDSR system . Overall time intake of per 24-h losing weight bear in mind (week-end and weekday) try calculated using NDSR. Times intake is actually determined given that mediocre full energy consumption having the newest sunday day and you will weekday.
Bmi z-rating (BMIz)
Children’s height and weight was in fact counted at all three timepoints using important steps inside the backup, once the people was dressed in light indoor outfits without shoes [66, 67]. SECA smartphone stadiometers and you will SECA cellular flat electronic scales having remote display screen were used to possess measuring height and you may lbs. Body mass index is transformed into BMIz playing with Federal Child Health Analytics development curves .
Covariates
Pubertal standing is actually assessed utilizing the 5-item Pubertal Development Measure . Which size, with types having boys and you will girls, asks from the physical innovation into the properties with the bodily growth; z-ratings to own boys and you will girls was in fact determined. Acculturation (knowledge to which one to abides by the fresh new dominating cultural norms) and you can enculturation (knowledge that you to preserves a person’s individual social norms) have been analyzed by using the six-goods English language use and you will 6-goods Foreign language vocabulary fool around with subscales of confirmed Bidimensional Acculturation Measure for Hispanics, correspondingly . An example items is actually “How often are you willing to cam English with your family members?” Points was indeed scored out of never ever (=1) so you can constantly (=5) along with a great reliabilities within attempt (? = 0.88–0.94).
Analysis
Descriptive analytics for market pointers, bed course, MVPA and effort intake by analysis period have been computed playing with IBM SPSS 24 Statistics getting Window (Armonk, NY: IBM Corp).
Cross-lagged committee model
An a priori model (Fig. 2) delineating the concurrent relationships (zero-order correlations) between sleep duration (hours), MVPA, energy intake (kcals), and BMIz, and cross-lagged effect of sleep duration, MVPA, and energy intake at BL and FU1 on BMIz at FU1 and FU2, respectively, was examined using cross-lagged panel modeling. This approach is widely used in analysis of longitudinal data to test longitudinal predictive effects between variables, such as MVPA on BMIz while accounting for auto-regressive effects of past behavior on future respective behavior, such as MVPA at BL on subsequent MVPA at FU1. Potential covariates included child gender and pubertal status, household income and enculturation as covariates of sleep duration, MVPA, energy intake and BMIz. The variable representing the missing data pattern was included as a covariate of pubertal status (? = 0.12, p = 0.03) and BMIz at BL (? = 0.16, p < 0.001).> 0.20. First, we fit the model with no constraints. Second, we fit a model with equality constraints, and finally fit a modified constrained model. We used cross-model-goodness-of-fit comparisons to guide selection of the final empirical model. The Satorra-Bentler scaled chi-square test statistic assessed goodness-of-fit of the model (p > 0.05), and approximate model fit was examined using the recommendations of Hu and Bentler ; i.e., comparative fit index (CFI) ? 0.95; root mean square error of approximation (RMSEA) ? .06, standardized root mean square residual (SRMR) ? .08. The final model was selected based on the lowest Akaike information criterion (AIC) . Standardized beta-coefficients (?) were examined for significance, magnitude and direction of relationship. Modeling was performed using Mplus, with full information maximum likelihood (FIML) to accommodate missing values. The number of observations in the analysis was 323. The FIML feature incorporates measures that support missing completely at random (MCAR). Mediation was tested using the INDIRECT command within Mplus, which estimates indirect effects with the delta method standard errors.