Powering Nutrition Research: Practical Strategies for Sample Size in Multiple Regression.

Robust statistical analysis is essential for advancing evidence-based nutrition research, particularly when investigating the complex relationships between dietary exposure and health outcomes. Multiple regression is a widely used analytical technique in nutrition studies due to its ability to control for confounding variables and assess multiple predictors simultaneously. However, the reliability, validity, and generalizability of findings from regression analyses depend heavily on having an appropriate sample size.

How Accurate Is Multiple Imputation for Nutrient Intake Estimation? Insights from ASA24 Data.

: Accurate dietary assessment is crucial for nutritional epidemiology, but tools like 24 h recalls (24HRs) face challenges with missing or implausible data. The Automated Self-Administered 24 h Dietary Assessment Tool (ASA24) facilitates large-scale data collection, but its lack of interviewer input may lead to implausible dietary recalls (IDRs), affecting data integrity. Multiple imputation (MI) is commonly used to handle missing data, but its effectiveness in high-variability dietary data is uncertain.

Dietary Patterns and Brain Health in Middle-Aged and Older Adults: A Narrative Review.

Diet has a profound impact on brain health, particularly in middle-aged and older adults, who are at increased risk of cognitive decline and neurodegenerative diseases. Various dietary patterns, including the Mediterranean diet (MedDiet), Dietary Approaches to Stop Hypertension (DASH), and Mediterranean-DASH Intervention for Neurodegenerative Delay (MIND) diets, have been linked to improved cognitive function. While the relative effectiveness of these diets on brain health is generally supported by evidence, variability in study results suggests that further research is needed to fully understand their effects across diverse populations.

Cannabis Hyperemesis Syndrome in Youth: Clinical Insights and Public Health Implications.

This review focuses on Cannabis Hyperemesis Syndrome (CHS) in youth, a condition linked to chronic cannabis use and characterized by cyclic vomiting, abdominal pain, and dehydration. The objectives were to explore CHS progression in youth and its impact on health, and to assess current treatment strategies. There are the three distinct phases of CHS: prodromal, hyperemetic, and recovery.

Defining Priorities for Canadian PICU Family Presence Policies Under Changing Contexts: A Qualitative Focus Group Study.

Introduction: Recognizing the importance of parental presence for seriously ill children's well-being, many pediatric intensive care units (PICUs) have adopted policies encouraging family presence. However, PICU family presence policies remain varied, with gaps in policy development and implementation across Canadian hospitals. We aimed to determine patient, family, clinician, and policymaker-identified priorities for family presence policies under baseline and emergency (e.

Outcomes associated with family presence at the bedside of critically ill children in the pediatric intensive care unit: a scoping review.

Objective: The objective of this review is to identify the outcomes of family presence in pediatric intensive care units (PICUs) that have been studied and reported in the literature.

Introduction: PICU admission can be traumatic for children and their families. While family presence at the patient bedside is recommended to support family participation and engagement in care and is supported in recent family-centered care guidelines, it is not consistently optimized.

Does outdoor advertising correlate with retail food purchases made by adolescents? A cross-sectional study in Canada.

Food marketing plays a substantial role in shaping adolescent diets, having wide-ranging ramifications for health behaviours and outcomes throughout the life course. Yet, there remains a dearth of research about how outdoor advertising as a specific channel of food marketing affects purchasing behaviours. We examine self-reported purchases made at retail food outlets by adolescents as it relates to the availability of outdoor food and beverage advertising around each participant's home, school, and along the journey to and from school.

Registered Dietitians' Experiences and Perceptions in Providing Prenatal Nutrition Care in Canada: A Cross-sectional Study.

To explore Canadian Registered Dietitians' (RDs) roles and experiences in prenatal care. This cross-sectional study utilized an online, anonymous, original survey. Eligible RDs, who are members of Dietitians of Canada (DC) and provide care for pregnancy, were invited to participate through their publicly available online profiles on the DC website.

Understanding Food Literacy Intervention Effectiveness: Postsecondary Students' Perspectives on How a mHealth Food Literacy Intervention Impacted Their Dietary Behaviors.

Objective: To explore postsecondary students' perspectives of the impacts of a mobile health (mHealth) food literacy intervention on dietary behaviors and why the intervention was or was not effective at influencing their dietary behavior.

Design: Qualitative study using semistructured focus groups.

Setting: Ontario, Canada.

How Many Participants Are Needed? Strategies for Calculating Sample Size in Nutrition Research.

Sample size estimation is a critical aspect of nutrition research methodology, yet it remains frequently overlooked, leading to underpowered studies and potentially inaccurate conclusions. This review addresses this gap by providing comprehensive guidance on how to calculate sample size in nutrition research. Emphasizing the importance of an a priori sample size calculation, the review outlines the key considerations, including the desired levels of significance and power, effect size estimation, and standard deviation assessment.

Family member experience with restricted family presence in Canadian PICUs: an interpretive descriptive study.

Purpose: We performed this study to explore family member experiences with restrictions to family presence during their child's PICU admission, leveraging the unique context of the COVID-19 pandemic to aid in future ethical and informed decision-making.

Methods: Qualitative interpretive descriptive study with family members of Canadian PICU patients admitted from March 2020 to April 2021 who experienced restricted family presence (RFP) policies. Respondents were purposively sampled for demographic-based maximum variation.

Developing community-based physical activity interventions and recreational programming for children in rural and smaller urban centres: a qualitative exploration of service provider and parent experiences.

Background: Children's physical inactivity is a persisting international public health concern. While there is a large body of literature examining physical activity interventions for children, the unique physical activity context of low-density communities in rural areas and smaller urban centres remains largely underexplored. With an influx of families migrating to rural communities and small towns, evaluations of health promotion efforts that support physical activity are needed to ensure they are meeting the needs of the growing populations in these settings.

Canadian Midwives' Experiences with Nutrition in Their Training and Practice: A Cross-Sectional Study.

Introduction: Midwives are primary prenatal care providers well-positioned to offer nutrition advice to pregnant individuals; however, no Canadian study has assessed midwives' experience with nutrition education. The objective of this study was to investigate Canadian midwives' experiences with nutrition in their practice, their level of nutrition education, and their recommendations on select nutrition topics.

Methods: This cross-sectional study used an anonymous online survey consisting of 4 sections: demographics, opinions on the importance of nutrition, nutrition recommendations for pregnancy, and nutrition topics that midwives would like more information on.

Evaluation of a 4-week interdisciplinary primary care cardiovascular health programme: impact on knowledge, Mediterranean Diet adherence and biomarkers.

Background: Cardiovascular disease (CVD) is the second-leading cause of death among Canadians. Clinical practice guidelines suggest that improvements to lifestyle, including dietary intake, can reduce the risk of CVD.

Objectives: The primary aim of the study was to evaluate patient changes in adherence to the Mediterranean Diet (Medi-Diet) from baseline to 4-week and 6-month follow-up after participating in a 4-week, group-based, interdisciplinary cardiovascular health programme run by healthcare professionals (HCPs) in a primary care setting.

Impact of COVID-19-related restricted family presence policies on Canadian pediatric intensive care unit clinicians: a qualitative study.

Purpose: Pediatric intensive care units (PICUs) worldwide restricted family presence in response to the COVID-19 pandemic. We aimed to explore the experiences and impact of restricted family presence policies on Canadian PICU clinicians.

Methods: We conducted a qualitative study that followed an interpretive phenomenological design.

Environmental influences on E-cigarette use among young people: A systematic review.

E-cigarettes are a popular mode of delivery for nicotine, tobacco and cannabis. The prevalence of vaping among youth is increasing and this review aims to identify features of the neighbourhood environment, e.g.

Dietary Changes of Youth during the COVID-19 Pandemic: A Systematic Review.

Background: The coronavirus disease 2019 (COVID-19) pandemic has taken the lives of millions and disrupted countless more worldwide. Simply living through the pandemic has had drastic effects on the health of citizens. Diet, an important aspect of health, has been uniquely affected by the pandemic, although these changes have not been sufficiently studied among youth.

"We Aren't Meant to Go Through the Hardest Parts of Our Lives Alone": Family Experience With Restricted PICU Presence During the COVID-19 Pandemic.

Context: PICUs across Canada restricted family presence (RFP) in response to the COVID-19 pandemic from allowing two or more family members to often only one family member at the bedside. The objective of this study was to describe the experiences and impact of RFP on families of critically ill children to inform future policy and practice.

Hypothesis: RFP policies negatively impacted families of PICU patients and caused moral distress.

"I want to be there. I have to be there.": Parents' perceived barriers and facilitators to bedside presence in the pediatric intensive care unit.

Introduction: Parental presence at the bedside during a stressful pediatric intensive care unit (PICU) admission may improve child comfort, reduce parental anxiety, and enable family engagement. We performed this study to identify factors that parents perceive impact their capability, opportunity, and motivation to be at the bedside in PICU.

Methods: We conducted a qualitative descriptive study using semi-structured interviews based on the Theoretical Domains Framework (TDF).

Impact of non-medical cannabis legalization with market restrictions on health service use and incident cases of psychotic disorder in Ontario, Canada.

Background: Cannabis is a risk factor in the onset and persistence of psychotic disorders. There is concern that non-medical cannabis legalization in Canada may have population-level impacts on psychotic disorders. We sought to examine changes in health service use and incident cases of psychotic disorder following cannabis legalization, during a period of tight restrictions on retail stores and product types.

Maternal Eating Disorders and Adverse Birth Outcomes: A Systematic Review and Meta-Analysis.

Previous systematic reviews have reported on the relationship between eating disorders (EDs) and birth outcomes, but there are no existing meta-analyses on this topic. This systematic review and meta-analysis examines the association between lifetime maternal EDs, including anorexia nervosa (AN), bulimia nervosa (BN), and binge-eating disorder (BED) with low birth weight (LBW), preterm birth (PTB), small for gestational age (SGA), large for gestational age (LGA), and miscarriage. Four databases were systematically searched for quantitative literature on maternal EDs that preceded birth outcomes.

The effect of non-medical cannabis retailer proximity on use of mental health services for psychotic disorders in Ontario, Canada.

Background: Cannabis is associated with the onset and persistence of psychotic disorders. Evidence suggests that accessibility of substances is associated with an increased risk of use-related harms. We sought to examine the effect of residing in proximity to non-medical cannabis retailers on the prevalence of health service use for psychosis.

A survey of pediatric intensive care unit clinician experience with restricted family presence during COVID-19.

Purpose: Limiting family presence runs counter to the family-centred values of Canadian pediatric intensive care units (PICUs). This study explores how implementing and enforcing COVID-19-related restricted family presence (RFP) policies impacted PICU clinicians nationally.

Methods: We conducted a cross-sectional, online, self-administered survey of Canadian PICU clinicians to assess experience and opinions of restrictions, moral distress (Moral Distress Thermometer, range 0-10), and mental health impacts (Impact of Event Scale [IES], range 0-75 and attributable stress [five-point Likert scale]).

The impact of smartphone app-based interventions on adolescents' dietary intake: a systematic review and evaluation of equity factor reporting in intervention studies.

Context: Adolescence is a critical stage for improving nutrition. The popularity of smartphones makes them an ideal platform for administering interventions to adolescents. A systematic review has yet to assess the impact of smartphone app-based interventions exclusively on adolescents' dietary intake.

Does Dietitian Involvement During Pregnancy Improve Birth Outcomes? A Systematic Review.

Maternal diet during pregnancy can have a significant impact on maternal and offspring health. As nutrition counselling is an important component of prenatal care, registered dietitians (RDs) are uniquely trained professionals who can provide personalized nutrition counselling customized to an individual's sociocultural needs. The objective of this systematic review was to determine if RD involvement during pregnancy is associated with a lower prevalence of adverse birth outcomes in the United States and Canada.