National estimates from the Youth '19 Rangatahi smart survey: A survey calibration approach.
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ABSTRACT:
SUBMITTER: Rivera-Rodriguez C
PROVIDER: S-EPMC8121344 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:[This corrects the article DOI: 10.1371/journal.pone.0251177.].
| S-EPMC8211149 | biostudies-literature
Project description:ObjectiveTo compare adolescents' reports of sexual and contraceptive behaviors between the National Survey of Family Growth (NSFG) and the Youth Risk Behavior Survey (YRBS).MethodsFor each survey, we estimated the year- and sex-specific prevalence of sexual and contraceptive behaviors among a comparably defined sample of US respondents ages 15-19 currently attending high school. We used logistic regression to test for changes in prevalence from 2007-2019 and conducted sensitivity analyses to investigate between-survey differences.ResultsWe found differences in both prevalence and trends between the YRBS and NSFG when limited to a comparably defined sample. Compared to the NSFG, adolescents in the YRBS were more likely to report being sexually experienced, less likely to report use of prescription methods for both sexes, and less likely to report condoms among males. Only the YRBS estimated significant declines in sexual experience for both sexes, and significant increases in prescription methods and declines in condom use among males. Differences between surveys in the prevalence of specific contraceptive methods reflected greater combined use of methods in the NSFG. We identified differences in question-wording and other aspects that may influence these differential patterns.ConclusionsThe NSFG and YRBS produced inconsistent prevalence estimates and trends for sexual and contraceptive behaviors among in-school adolescents. Further efforts to improve these national surveillance systems are critical to inform policy and research efforts that support adolescent sexual and reproductive health and wellbeing.
| S-EPMC8323913 | biostudies-literature
Project description:The 2021 National Youth Tobacco Survey (NYTS) was completed by youth online during class time, either in school or at home due to the COVID-19 pandemic. Given the role of NYTS data in tobacco regulatory science, it is vital to understand the effect of survey settings (home, school) on tobacco-use estimates. We used a series of multivariable logistic regressions to examine whether survey settings (home vs. school) predicted current e-cigarette use among high school students, controlling for other known predictors of e-cigarette use as well as the pandemic learning model that was dominant in students' counties (e.g., nearly all at-home, majority in school). We observed a significant survey setting effect. Those who completed the survey in school had higher odds of current e-cigarette use than those who completed the same survey at home (AOR = 1.74); this effect was attenuated when we controlled for the pandemic learning model (AOR = 1.38). Moreover, e-cigarette use was independently associated with students' learning model; students whose schools were nearly entirely in-person had the highest odds of e-cigarette use compared to students whose learning model was nearly all at-home (AOR = 1.65). Survey setting is a methodological artifact in the 2021 NYTS. Perceived privacy and peer effects can potentially explain this artifact.
| S-EPMC9180474 | biostudies-literature
Project description:Survey calibration methods modify minimally sample weights to satisfy domain-level benchmark constraints (BC), e.g. census totals. This allows exploitation of auxiliary information to improve the representativeness of sample data (addressing coverage limitations, non-response) and the quality of sample-based estimates of population parameters. Calibration methods may fail with samples presenting small/zero counts for some benchmark groups or when range restrictions (RR), such as positivity, are imposed to avoid unrealistic or extreme weights. User-defined modifications of BC/RR performed after encountering non-convergence allow little control on the solution, and penalisation approaches modelling infeasibility may not guarantee convergence. Paradoxically, this has led to underuse in calibration of highly disaggregated information, when available. We present an always-convergent flexible two-step global optimisation (GO) survey calibration approach. The feasibility of the calibration problem is assessed, and automatically controlled minimum errors in BC or changes in RR are allowed to guarantee convergence in advance, while preserving the good properties of calibration estimators. Modelling alternatives under different scenarios using various error/change and distance measures are formulated and discussed. The GO approach is validated by calibrating the weights of the 2012 Health Survey for England to a fine age-gender-region cross-tabulation (378 counts) from the 2011 Census in England and Wales.
| S-EPMC6956878 | biostudies-literature
Project description:PurposeTo compare estimates of moderate-vigorous physical activity (MVPA) duration derived from accelerometers calibrated only to walking and running activities to estimates from calibrations based on a broader range of lifestyle and ambulatory activities.MethodsIn a study of 932 older (50-74 yr) adults we compared MVPA estimates from accelerometer counts based on three ambulatory calibration methods (Freedson 1952 counts per minute; Sasaki 2690 counts per minute; activPAL 3+ METs) to estimates based on calibrations from lifestyle and ambulatory activities combined (Matthews 760 counts per minute; Crouter 3+ METs; Sojourn3x 3+ METs). We also examined data from up to 6 previous-day recalls describing the MVPA in this population.ResultsThe MVPA duration values derived from ambulatory calibration methods were significantly lower than methods designed to capture a broader range of both lifestyle and ambulatory activities (P < 0.05). The MVPA (h·d) estimates in all participants were: Freedson (median, 0.35; interquartile range, 0.17-0.58); Sasaki (median, 0.91; interquartile range, 0.59-1.32); and activPAL (median, 0.97; interquartile range, 0.71-1.26) compared with Matthews (median, 1.82; interquartile range, 1.37-2.34); Crouter (2.28 [1.72-2.82]); and Sojourn3x (median, 1.85; interquartile range, 1.42-2.34). Recall-based estimates in all participants were comparable (median, 1.61; interquartile range, 0.89-2.57) and indicated participation in a broad range of lifestyle and ambulatory MVPA.ConclusionsAccelerometer calibration studies that employ only ambulatory activities may produce MVPA duration estimates that are substantially lower than methods calibrated to a broader range of activities. These findings highlight the potential to reduce potentially large differences among device-based measures of MVPA due to variation in calibration study design by including a variety of lifestyle and ambulatory activities.
| S-EPMC6193831 | biostudies-literature
Project description: Not available
| S-EPMC8378793 | biostudies-literature
Project description:BackgroundA growing literature has documented the high global morbidity, mortality and mental health burden associated with the current Covid-19 pandemic. In this paper, we aimed to quantify the total utility and quality of life loss resulting from Covid-19-related government restrictions imposed at the national, regional and global levels.MethodsWe conducted quality of life online surveys in France, India, Italy, UK and the United States of America between June 21st and September 13th 2021, and used regression models to estimate the average quality of life loss due to light and severe restrictions in these countries. We then combined estimated disutility weights from the pooled sample with the latest data on Covid-19 restrictions exposure in each country to estimate the total disutility generated by restrictions at the national, regional and global level. We also embedded a discrete choice experiment (DCE) into the online survey to estimate average willingness to pay to avoid specific restrictions.FindingsA total of 947 surveys were completed. Thirty-five percent of respondents were female, and 69.5% were between 18 and 39 years old. The weighted average utility weight was 0.71 (95% CIs 0.69-0.74) for light restrictions, and 0.65 (0.63-0.68) for severe restrictions. At the global scale, this implies a total loss of 3259 million QALYs (95% 3021, 3496) as of September 6th, 2021, with the highest burden in lower and upper middle-income countries. Utility losses appear to be particularly large for closures of schools and daycares as well as restaurants and bars, and seem relatively small for wearing masks and travel restrictions.InterpretationThe results presented here suggest that the QALY losses due to restrictions are substantial. Future mitigation strategies should try to balance potential reductions in disease transmission achievable through specific measures against their respective impact on quality of life. Additional research is needed to determine differences in restriction-specific disutilities across countries, and to determine optimal policy responses to similar future disease threats.FundingNo funding was received for this project.
| S-EPMC8856030 | biostudies-literature
Project description:BackgroundSexually transmitted infection (STI) rates continue to rise in the U.S., with disproportionately high rates among those aged 15-24 years. Effective programs and policies are necessary to address this growing public health problem. The purpose of this study is to assess the perspectives of a national sample of youth on access to STI care and behaviors regarding STIs.MethodsMyVoice, a national text message survey of youth, was used to pose four open-ended questions on STI screening and treatment to 1115 youth aged 14-24 in August 2018. A mixed-methods strategy was employed for the study. Qualitative data was analyzed using a modified grounded theory approach. Summary statistics were calculated for demographic data and prevalence of themes.ResultsOf the 800 participants who responded to at least one question (72% response rate), mean age was 19 years (SD = 3.1), 55% identified as female, 61% identified as non-Hispanic white, and 33% qualified for free/reduced lunch. A majority felt it would be easy to get screened (69%) or treated (68%) for an STI. Nearly all respondents (95%) stated they would share an STI diagnosis with their sexual partners.ConclusionsDespite high rates of STIs among youth, most respondents reported that STI screening and treatment is accessible, and they would share an STI diagnosis with their partner.
| S-EPMC8567981 | biostudies-literature
Project description:Indigenous youth mental health is an urgent public health issue, which cannot be addressed with a one-size-fits-all approach. The success of health policies in Indigenous communities is dependent on bottom-up, culturally appropriate, and strengths-based prevention strategies. In order to maximize the effectiveness of these strategies, they need to be embedded in replicable and contextually relevant mechanisms such as school curricula across multiple communities. Moreover, to engage youth in the twenty-first century, especially in rural and remote areas, it is imperative to leverage ubiquitous mobile tools that empower Indigenous youth and facilitate novel Two-Eyed Seeing solutions. Smart Indigenous Youth is a 5-year community trial, which aims to improve Indigenous youth mental health by embedding a culturally appropriate digital health initiative into school curricula in rural and remote Indigenous communities in Canada. This policy analysis explores the benefits of such upstream initiatives. More importantly, this article describes evidence-based strategies to overcome barriers to implementation through the integration of citizen science and community-based participatory research action.
| S-EPMC7547388 | biostudies-literature
Project description:BackgroundHealthy childhood development is fostered through sufficient physical activity (PA; including time outdoors), limiting sedentary behaviours (SB), and adequate sleep; collectively known as movement behaviours. Though the COVID-19 virus outbreak has changed the daily lives of children and youth, it is unknown to what extent related restrictions may compromise the ability to play and meet movement behaviour recommendations. This secondary data analysis examined the immediate impacts of COVID-19 restrictions on movement and play behaviours in children and youth.MethodsA national sample of Canadian parents (n = 1472) of children (5-11 years) or youth (12-17 years) (54% girls) completed an online survey that assessed immediate changes in child movement and play behaviours during the COVID-19 outbreak. Behaviours included PA and play, SB, and sleep. Family demographics and parental factors that may influence movement behaviours were assessed. Correlations between behaviours and demographic and parental factors were determined. For open-ended questions, word frequency distributions were reported.ResultsOnly 4.8% (2.8% girls, 6.5% boys) of children and 0.6% (0.8% girls, 0.5% boys) of youth were meeting combined movement behaviour guidelines during COVID-19 restrictions. Children and youth had lower PA levels, less outside time, higher SB (including leisure screen time), and more sleep during the outbreak. Parental encouragement and support, parental engagement in PA, and family dog ownership were positively associated with healthy movement behaviours. Although families spent less time in PA and more time in SB, several parents reported adopting new hobbies or accessing new resources.ConclusionsThis study provides evidence of immediate collateral consequences of the COVID-19 outbreak, demonstrating an adverse impact on the movement and play behaviours of Canadian children and youth. These findings can guide efforts to preserve and promote child health during the COVID-19 outbreak and crisis recovery period, and to inform strategies to mitigate potential harm during future pandemics.
| S-EPMC7336091 | biostudies-literature