Assessing the Performance of a Nutrition Knowledge Questionnaire With a Low Socioeconomic Status Population Using Rasch Analysis.

Parents and preschool teachers play a key role in shaping children's dietary behaviors. Knowledge of nutrition and healthy dietary choices is a key component to improve dietary habits and reduce the prevalence of obesity and associated co-morbidities. Using valid and reliable instruments is necessary for accurate assessment of knowledge to tailor interventions and measure effectiveness specific to the population of interest. The objectives of this paper are to (1) identify potential gaps in the baseline nutrition knowledge among parents and teachers using a previously validated questionnaire prior to a preschool obesity prevention intervention; and (2) assess the instrument's reliability and construct validity for a low socioeconomic status population using a post hoc Rasch analysis. Participants included 177 parents and 75 teachers who participated in a Head Start intervention study. Knowledge scores, instrument reliability, and item fit and difficulty were assessed using a Rasch analysis; t-tests were used to determine differences in scores between parents and teachers. Parents answered 38% of questions correctly while teachers correctly answered 46% of the questions. Adequate item fit and reliability were indicated for Sections 1 and 2 of the Nutrition Knowledge Questionnaire (NKQ). Section 3 demonstrated less adequate reliability. The items were found to adequately and reliably define the unidimensional measures of the three components of knowledge represented in this instrument, providing evidence of construct validity. However, Rasch measures indicated the NKQ overall was difficult for participants. Recommendations for improving the instrument for nutrition education/intervention and research practice areas related to obesity and obesity-related conditions are addressed.

Comparing Message Appeals Employed in Efforts to Prevent E-cigarette Use Among Students in a US University.

College students tend to underestimate the risk associated with e-cigarette use while overestimating the prevalence of this behavior. The purpose of this study was to compare the perceived effectiveness of social norms messages to other theoretical appeals regarding the prevention of e-cigarette use. Researchers surveyed 586 college students who assessed five messages. Different appeals were featured in each message. A Rasch Rating Scale Model (RSM) was used to calibrate students' responses to seven items assessing each communication message. The results from the multiple regression models revealed that vape-users were less receptive to the messages than abstainers, and among vape users, males expressed lower message endorsement than females. Overall, the clinical appeal received the highest endorsement in Rasch calibrated logit unit measures, (M = 3.36 for abstainers and M = 2.41 for vape-users), whereas the social norms message was the least favored (M = 1.41 for abstainers and M = 0.22 for vape-users). Qualitative analyses revealed common themes of skepticism and a need for credible scientific information. Findings suggest college students prefer clinical evidence over normative information. An experimental design is needed to determine the extent to which messages influence behavior change.

"IAmSizeSexy": A health communication body image study.

OBJECTIVE: The aim of this study was to formatively evaluate a health communication campaign on body image targeting undergraduate female students. PARTICIPANTS: A total of 331 students at a large public Midwestern university participated in the study. METHODS: Researchers used central intercept procedures to recruit students from residence halls. After viewing the campaign materials, students completed an online survey assessing their message endorsement and level of eating disorder symptomology and provided open-ended comments. RESULTS: Students appreciated the message and thought it was effective, though students with greater body image concerns were less receptive to the message. Thematic analysis indicated students perceive body image to be a relevant issue, yet they want the university to provide more attention to, and information on, the topic. CONCLUSIONS: Overall, students understood the message and found it helpful. Nevertheless, students with body image issues responded less favorably, warranting the need for secondary and tertiary prevention.

Influence of foam thickness on the control of EMG activity during a step-down task in females.

Compliant foams can be used to mitigate ground reaction forces. However, it is unknown how foam surfaces influence the modulation of leg muscle activity. Thus, the current study aimed to investigate how the neuromuscular system managed changes in expected loading due to various thickness of foam placed on the landing surface during a step down task. The surface electromyographic signal (sEMG) pre-activation duration and the root mean square (RMS) amplitude of tibialis anterior (TA), lateral gastrocnemius (LG), and vastus medialis (VM) of 10 active females were measured as they stepped-down with a single leg onto polyurethane foam slabs of varying thickness (0-50 mm). Pre-activation duration was not affected by the thickness of the foam padding. LG RMS amplitude was less in the foam conditions than the control (no- foam) condition, with the greatest reduction observed for the 50 mm foam condition. In some trials, the muscles remained active throughout the step-down task. In such instances, a sEMG onset time and thus a pre-activation duration could not be determined. All foam conditions significantly increased the odds of continuous muscle activity above that of the no-foam condition. The results indicate that foam surfaces may alter the modulation of muscle activity during step-down tasks.

Are videoconferenced mental and behavioral health services just as good as in-person? A meta-analysis of a fast-growing practice.

The use of videoconferencing technologies (VCT) is on the rise given its potential to close the gap between mental health care need and availability. Yet, little is known about the effectiveness of these services compared to those delivered in-person. A series of meta-analyses were conducted using 57 empirical studies (43 examining intervention outcomes; 14 examining assessment reliability) published over the past two decades that included a variety of populations and clinical settings. Using conventional and HLM3 meta-analytical approaches, VCT consistently produced treatment effects that were largely equivalent to in-person delivered interventions across 281 individual outcomes and 4336 clients, with female clients and those treated in medical facilities tending to respond more favorably to VCT than in-person. Results of an HLM3 model suggested assessments conducted using VCT did not appear to lead to differential decisions compared to those conducted in-person across 83 individual outcomes and 332 clients/examinees. Although aggregate findings support the use of VCT as a viable alternative to in-person service delivery of mental healthcare, several limitations in the current literature base were revealed. Most concerning was the relatively limited number of randomized controlled trials and the inconsistent (and often incomplete) reporting of methodological features and results. Recommendations for reporting the findings of telemental health research are provided.

Primary versus secondary prevention messages: College students' perceptions of effectiveness by marijuana user status.

Objective: With medical and recreational marijuana legislation expanding throughout the country, the need to educate high-risk populations is evident. The purpose of this study was to assess college students' perceptions of health communication messages comparing primary and secondary prevention messages concerning marijuana. Participants: Participants (n = 487) included college students, ages 18-25, enrolled in a Midwestern University. Methods: Participants assessed messages based on likeability, creativity, believability, persuasiveness, relevance, and usefulness using an online questionnaire that also included open-end comments. Results: Rasch analyses indicate that nonmarijuana users rated primary prevention messages higher than secondary prevention messages, whereas marijuana users ranked secondary prevention messages more favorably than primary prevention messages. Conclusion: Interventions designed to address marijuana use among college students may be more effective if tailored toward user status. Specifically, primary prevention materials should be designed for abstainers, while secondary prevention messages that focus on harm reduction strategies should be used with marijuana users.

Using the Elaboration Likelihood Model to Address Drunkorexia among College Students.

BACKGROUND: The many consequences related to alcohol consumption among college students are well documented. Drunkorexia, a relatively new term and area of research, is characterized by skipping meals to reduce caloric intake and/or exercising excessively in attempt to compensate for calories associated with high volume drinking. OBJECTIVE: The objective of this study was to use the Elaboration Likelihood Model to compare the impact of central and peripheral prevention messages on alcohol consumption and drunkorexic behavior. METHODS: Researchers employed a quasi-experimental design, collecting pre- or post-test data from 172 college students living in residence halls at a large Midwestern university, to assess the impact of the prevention messages. Participants in the treatment groups received the message in person (flyer), through email, and via a text message in weekly increments. RESULTS: Results showed that participants exposed to the peripherally framed message decreased the frequency of their alcohol consumption over a 30-day period (p =.003), the number of drinks they consumed the last time they drank (p =.029), the frequency they had more than five drinks over a 30-day period (p =.019), as well as the maximum number of drinks they had on any occasion in the past 30 days (p =.014). Conclusions/Importance: While more research is needed in this area, the findings from this study indicate that researchers and practitioners should design peripheral (short and succinct), rather than central (complex and detailed), messages to prevent drunkorexia and its associated behaviors.