Public Health Nutrition最新文献

{"title":"The impact of brand advertising on children's food preferences and behavioural intentions: an experimental study.","authors":"Christine Mulligan, Lauren Remedios, Tim Ramsay, Elise Pauzé, Mariangela Bagnato, Monique Potvin Kent","doi":"10.1017/S1368980025000369","DOIUrl":"10.1017/S1368980025000369","url":null,"abstract":"<p><strong>Objective: </strong>Despite strong evidence linking exposure to food and beverage marketing with poor diet quality and negative health impacts in children, the effect of brand marketing (i.e. marketing featuring branded content, but no food products) is uncertain. This study evaluated the impact of brand marketing <i>v.</i> product-based advertising on children's food preferences and behavioural intentions.</p><p><strong>Design: </strong>An online survey was administered to participants randomised to one of four ad conditions; familiar product (i.e. from popular Canadian brands); familiar brand (i.e. no food product, Canadian brand); unfamiliar product (i.e. foreign products); and unfamiliar brand ad (i.e. foreign brand). Participants viewed three ads displaying features of that condition and answered three 5-point Likert-scale questions related to the study outcomes: food preference, purchase intent and pester power. The average of all outcomes determined the total impact. An ANOVA with Bonferroni <i>post hoc</i> tests evaluated differences in impact between conditions.</p><p><strong>Setting: </strong>Canada participants: <i>n</i> 1341 Canadian children (9-12 years).</p><p><strong>Results: </strong>Familiar product ads had a higher total impact on children (mean score 3·57) compared with familiar brand ads (2·88), unfamiliar brand ads (3·24) or unfamiliar product ads (3·09; <i>P</i> < 0·001 for all pairwise comparisons). Total impact was lower for familiar brand ads than for unfamiliar brand ads or unfamiliar product ads (<i>P</i> < 0·001 for all pairwise comparisons). The impact of an unfamiliar brand and product did not differ (<i>P</i> = 0·53).</p><p><strong>Conclusions: </strong>Results suggest that familiar product ads seem to have a stronger impact on children's food preferences and behavioural intentions than familiar brand ads, unfamiliar brand ads and unfamiliar product ads.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e90"},"PeriodicalIF":3.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100560/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144064462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A quantitative environmental impact assessment of Australian ultra-processed beverages and impact reduction scenarios - ERRATUM.","authors":"Kim Anastasiou, Michalis Hadjikakou, Ozge Geyik, Gilly A Hendrie, Phillip Baker, Richard Pinter, Mark Lawrence","doi":"10.1017/S1368980025000497","DOIUrl":"10.1017/S1368980025000497","url":null,"abstract":"","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":"28 1","pages":"e72"},"PeriodicalIF":3.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12086726/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144014691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validation of measurement of body composition by dual-energy X-ray absorptiometry and bioelectrical impedance analysis and body composition's profiling in Tibetan's adults.","authors":"Wenxiu Jian, Bin Zhang, Yue Ma, Xiao Tang, Tuan Thanh Nguyen, Meng Lv, Xiangyang Meng, Tiemei Li, Xiaomin Sun, Youfa Wang, Yanming Ren, Wen Peng","doi":"10.1017/S1368980025000291","DOIUrl":"10.1017/S1368980025000291","url":null,"abstract":"<p><strong>Objective: </strong>We aimed to validate in-body bioelectrical impedance analysis (BIA) measures with dual-energy X-ray absorptiometry (DXA) as reference and describe the body composition (BC) profiling of Tibetan adults.</p><p><strong>Design: </strong>This cross-sectional study included 855 participants (391 men and 464 women). Correlation and Bland-Altman analyses were performed for method agreement of in-body BIA and DXA. BC were described by obesity and metabolic status.</p><p><strong>Setting: </strong>In-body BIA and DXA have not been employed to characterise the BC of the Tibetan population living in the Qinghai-Tibet Plateau.</p><p><strong>Participants: </strong>A total of 855 Tibetan adults, including 391 men and 464 women, were enrolled in the study.</p><p><strong>Results: </strong>Concordance correlation coefficient for total fat mass (FM) and total lean mass (LM) between in-body BIA and DXA were 0·91 and 0·89. The bias of in-body BIA for percentages of total FM and total LM was 0·91 % (2·46 %) and -1·74 % (-2·80 %) compared with DXA, respectively. Absolute limits of agreement were wider for total FM in obese men and women and for total LM in overweight men than their counterparts. Gradience in the distribution of total and regional FM content was observed across different BMI categories and its combinations with waist circumference and metabolic status.</p><p><strong>Conclusions: </strong>In-body BIA and DXA provided overall good agreement at the group level in Tibetan adults, but the agreement was inferior in participants being overweight or obese.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e96"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171921/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144041900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring disparities in the proportion of ultra-processed foods and beverages purchased in grocery stores by US households in 2020.","authors":"Elizabeth K Dunford, Donna R Miles, Barry M Popkin","doi":"10.1017/S1368980025000606","DOIUrl":"10.1017/S1368980025000606","url":null,"abstract":"<p><strong>Objective: </strong>American diets are increasingly based on ultra-processed foods (UPF). Current research, particularly on socio-economic differentials, is lacking. This study aimed to provide an updated examination of US household purchases of UPF and how this differs by race-ethnicity, household income and household education.</p><p><strong>Design: </strong>The NielsenIQ Consumer Panel 2020 was utilised for analysis. Each food and beverage product purchased by US households was assigned a level of processing under the Nova level of processing classification system. The volume of UPF purchased overall and by food group was determined for each Nova processing group and examined by race-ethnicity, education and income. Results were stratified by race-ethnicity within each income group. A <i>P</i> value < 0·0001 was considered significant.</p><p><strong>Setting: </strong>This study analysed data from the Nielsen IQ Consumer Panel 2020 which recorded household food purchases in the USA.</p><p><strong>Participants: </strong>The Nielsen IQ Homescan Consumer Panel is a nationally representative longitudinal survey of around 35 000 and 60 000 US households.</p><p><strong>Results: </strong>Of 33 054 687 products purchased by 59 939 US households in 2020, 48 % of foods and 38 % of beverages were considered UPF. Categories with the highest proportion of purchases deriving from UPF included carbonated soft drinks (90 %), mixed dishes and soups (81 %) and sweets and snacks (71 %). Slightly higher but statistically significant proportions of UPF purchases occurred in the lowest income and education groups and among non-Hispanic whites.</p><p><strong>Conclusions: </strong>It is concerning that household purchases of UPF in the USA are high. Policies that reduce consumption of UPF may help reduce diet-related health inequalities.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e85"},"PeriodicalIF":3.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100555/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143977766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of fat-free mass and fat mass from bioimpedance spectroscopy and anthropometry: a validation study in 7- to 9-year-old Kuwaiti children.","authors":"Tareq Al-Ati, Jonathan Wells, Leigh C Ward","doi":"10.1017/S1368980025000503","DOIUrl":"10.1017/S1368980025000503","url":null,"abstract":"<p><strong>Objective: </strong>Childhood obesity is increasing in many countries, including Kuwait. Currently, adiposity is most commonly assessed from simple anthropometric measurements, e.g. height and weight or combined as body mass index (BMI). This is despite these surrogate measurements being poor indices of adiposity. Bioelectrical impedance analysis (BIA) is a popular method for the assessment of body composition providing a measurement of adiposity as absolute fat mass (FM) or FM expressed as a percentage of body weight (%BF). BIA is, however, an indirect predictive method. This study developed a BIA-based prediction equation for body composition assessment in Kuwaiti children and, additionally, a prediction equation for %BF based on sum of skin-fold (SSF) thickness measurements.</p><p><strong>Design: </strong>A cross-sectional design was used with primary school recruitment.</p><p><strong>Setting: </strong>School population in Kuwait City; in-clinic assessments.</p><p><strong>Participants: </strong>158 Kuwaiti children aged 7-9 years. Body composition assessed using bioimpedance spectroscopy and skin-folds with prediction equations generate against deuterium dilution measurement of total body water and fat-free mass (FFM) as reference.</p><p><strong>Results: </strong>The newly developed and cross-validated BIA equation predicted FFM with minimal bias (< 1%) and acceptable 2 sd limits of agreement (±1·6 kg equivalent to ±10%) improving on the predictive performance of comparable published equations. Similarly, SSF predicted %BF with small bias (0·2 %BF) but relatively wide limits of agreement (±7 %BF).</p><p><strong>Conclusions: </strong>These new equations are suitable for practical use for nutritional assessment in Kuwaiti children, particularly in epidemiological or public health settings although their applicability in other populations requires further research.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e95"},"PeriodicalIF":3.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144030712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutritional portrait of processed foods purchased in Québec (Canada), 2016-2022.","authors":"Julie Perron, Alicia Corriveau, Sonia Pomerleau, Clara-Jane Rhéaume, Marie-Ève Labonté, Véronique Provencher","doi":"10.1017/S1368980025000588","DOIUrl":"10.1017/S1368980025000588","url":null,"abstract":"<p><strong>Objective: </strong>The Food Quality Observatory synthetises the nutritional composition of fifteen processed food categories commonly purchased in Québec (Canada). We assessed how the new Canadian front-of-pack (FoP) labelling regulation of a ‘high in’ symbol, to be implemented as of January 1, 2026, would be potentially reflected in these categories and how simulations of reformulation would impact the presence of the symbol.</p><p><strong>Design: </strong>Nutritional information was obtained by collecting food products available in supermarkets and grocery stores in the province of Québec (2016–2022). Sales data were obtained from <i>NielsenIQ</i> company. Fifteen food categories have been selected, and three levels of reformulation were simulated.</p><p><strong>Setting: </strong>The nutritional values of 5132 products were merged with sales data. 3941 products were successfully cross-referenced.</p><p><strong>Results: </strong>Sixty percent of all products sold (<i>n</i> 2336/3941) would carry the ‘high in’ symbol reflecting a high content of Na, saturated fat and/or total sugar (39 %, 16 % and 17 %, respectively). For certain food categories, a slight reduction (5–15 %) in Na, saturated fat or total sugar content would allow removing the ‘high in’ symbol in a large number of products. For example, a 5 % reduction of the Na content in sliced breads would allow 22 percentage point (pp) fewer products to display the symbol.</p><p><strong>Conclusions: </strong>This study presents a portrait of processed foods purchased in Québec (Canada) and the distribution of the FOP ‘high in’ symbol. Such a portrait generates important data to monitor the food supply’s nutritional quality, which can ultimately contribute to improving the nutritional quality of processed foods.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":"28 1","pages":"e79"},"PeriodicalIF":3.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144005784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neighbourhood exposure to fast-food and sit-down restaurants and estimated 24-hour urinary sodium excretion: a cross-sectional analysis of urban adults from the ORISCAV-LUX 2 study.","authors":"Marion Tharrey, Olivier Klein, Torsten Bohn, Dmitry Bulaev, Juliette Van Beek, Laurent Malisoux, Camille Perchoux","doi":"10.1017/S1368980025000540","DOIUrl":"10.1017/S1368980025000540","url":null,"abstract":"<p><strong>Objective: </strong>Increased out-of-home consumption may elevate sodium (Na) intake, but self-reported dietary assessments limit evidence. This study explored associations between neighbourhood exposure to fast-food and sit-down restaurants and estimated 24-hour urinary Na excretion.</p><p><strong>Design: </strong>A cross-sectional analysis from the ORISCAV-LUX 2 study (2016-2017). 24-hour urinary Na was estimated from a morning spot urine sample using the INTERSALT formula. Spatial access to fast-food and sit-down restaurants was derived from GIS data around participants' addresses within 800-m and 1000-m road network buffers by summing up the inverse of the road network distance between their residential address and all restaurants within the corresponding buffer size. Multi-adjusted linear models were used to assess the association between spatial access to restaurants and estimated 24-hour urinary Na excretion.</p><p><strong>Setting: </strong>Luxembourg.</p><p><strong>Participants: </strong>Urban adults age over 18 years (<i>n</i> 464).</p><p><strong>Results: </strong>Fast-food and sit-down restaurants accounted for 58·5 % of total food outlets. Mean 24-hour urinary Na excretion was 3564 mg/d for men and 2493 mg/d for women. Health-conscious eating habits moderated associations between spatial access to fast-food and sit-down restaurants and Na excretion. For participants who did not attach great importance to having a balanced diet, greater spatial access to restaurants, combining both density and accessibility, was associated with increased urinary Na excretion at 800 m (<i>β</i>_highvslow = 259, 95 % CI: 47, 488) and 1000 m (<i>β</i>_highvslow = 270, 95 % CI: 21, 520).</p><p><strong>Conclusions: </strong>Neighbourhood exposure to fast-food and sit-down restaurants influences Na intake, especially among individuals with less health-conscious eating habits, potentially exacerbating diet-related health disparities.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e94"},"PeriodicalIF":3.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12171902/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144029061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multivariate time series clustering analysis of the Global Dietary Database to uncover patterns in dietary trends (1990-2018).","authors":"Adriano Matousek, Tiffany H Leung, Herbert Pang","doi":"10.1017/S136898002500059X","DOIUrl":"10.1017/S136898002500059X","url":null,"abstract":"<p><strong>Objective: </strong>Understanding country-level nutrition intake is crucial to global nutritional policies that aim to reduce disparities and relevant disease burdens. Still, there are limited numbers of studies using clustering techniques to analyse the recent Global Dietary Database (GDD). This study aims to extend an existing multivariate time series (MTS) clustering algorithm to allow for greater customisability and provide the first cluster analysis of the GDD to explore temporal trends in country-level nutrition profiles (1990-2018).</p><p><strong>Design: </strong>Trends in sugar-sweetened beverage intake and nutritional deficiency were explored using the newly developed programme 'MTSclust'. Time series clustering algorithms are different from simple clustering approaches in their ability to appreciate temporal elements.</p><p><strong>Setting: </strong>Nutritional and demographical data from 176 countries were analysed from the GDD.</p><p><strong>Participants: </strong>Population representative samples of the 176 in the GDD.</p><p><strong>Results: </strong>In a three-class test specific to the domain, the MTSclust programme achieved a mean accuracy of 71·5 % (adjusted Rand Index [ARI] = 0·381) while the mean accuracy of a popular algorithm, DTWclust, was 58 % (ARI = 0·224). The clustering of nutritional deficiency and sugar-sweetened beverage intake identified several common trends among countries and found that these did not change by demographics. MTS clustering demonstrated a global convergence towards a Western diet.</p><p><strong>Conclusion: </strong>While global nutrition trends are associated with geography, demographic variables such as sex and age are less influential to the trends of certain nutrition intake. The literature could be further supplemented by applying outcome-guided methods to explore how these trends link to disease burdens.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e89"},"PeriodicalIF":3.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100565/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144053940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intimate partner violence and reduced dietary iron and vitamin A intake: a population analysis of nationally representative data from eight low- and middle-income countries.","authors":"Luissa Vahedi, Manuela Orjuela-Grimm, Pui Man Pamela Chan, Sarah R Meyer","doi":"10.1017/S1368980025000539","DOIUrl":"10.1017/S1368980025000539","url":null,"abstract":"<p><strong>Objective: </strong>This research provides the first population-based investigation of intimate partner violence (IPV) and women's dietary intake of iron and Vitamin A-rich foods using representative data from eight low- and middle-income countries.</p><p><strong>Design: </strong>Using multivariable logistic regression, we estimated the relationship between various forms of past year IPV (physical, emotional and sexual) and consumption of Vitamin A and iron-rich foods.</p><p><strong>Setting: </strong>We conducted secondary data analysis of cross-sectional demographic and health surveys from Cambodia (2021, <i>n</i> 5640), Nepal (2022, <i>n</i> 4179), Sierra Leone (2019, <i>n</i> 3812), Nigeria (2018, <i>n</i> 8313), Tajikistan (2017, <i>n</i> 4800), Cote D'Ivoire (2021, <i>n</i> 3656), Kenya (2022, <i>n</i> 10 758) and the Philippines (2022, <i>n</i> 12 278).</p><p><strong>Participants: </strong>Women of reproductive age (15-49 years) comprised the analytical sample.</p><p><strong>Results: </strong>Results revealed distinct relationship patterns between various IPV forms and women's dietary consumption of micronutrient-rich foods. The most consistent relationships being that past year (i) sexual IPV (adjusted OR (aOR): 0·72, 95 % CI: 0·53, 0·98), (ii) physical IPV (aOR: 0·86, 95 % CI: 0·73, 1·01) and (iii) emotional IPV (aOR: 0·81, 95 % CI: 0·70, 0·94) significantly <i>reduced</i> the odds of consuming iron-rich foods in the pooled analyses. Due to between-country heterogeneity concerning the relationship between IPV and Vitamin A, pooled estimates for dietary vitamin A consumption were non-significant. However, in the Philippines, IPV was associated with reduced dietary Vitamin A intake.</p><p><strong>Conclusions: </strong>IPV is associated with altered dietary intake patterns and between-country differences could be due to different food environments. Mechanisms explaining our findings may involve consequences of IPV that impact diet and dietary practices: depression, control of resources and physical trauma.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e87"},"PeriodicalIF":3.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100563/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144043065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consumers acceptability of using screen capture methods to capture marketing strategies on online food delivery platforms: a qualitative study.","authors":"Adyya Gupta, Kathryn Backholer, Catherine E Huggins, Gloria Kw Leung, Rebecca Bennett, Anna Peeters","doi":"10.1017/S1368980025000515","DOIUrl":"10.1017/S1368980025000515","url":null,"abstract":"<p><strong>Objective: </strong>The use of online food delivery (OFD) platforms is on the rise, and currently, there are no public health policies that regulate what and how food is sold on these platforms. Research quantifying and describing the marketing strategies on OFD platforms is limited. Our study aimed to test the consumers' acceptability of using two screen capture methods to record their food purchasing behaviour on OFD platforms and describe consumers' exposure to, and engagement with, marketing strategies on OFD platforms in real time.</p><p><strong>Design: </strong>Semi-structured online interviews on the consumer acceptability of using the screen capture methods were analysed using thematic analysis. Screen recordings of OFD orders were analysed using content analysis, guided by the marketing mix framework (i.e. product, placement, price and promotion).</p><p><strong>Settings: </strong>Victoria, Australia.</p><p><strong>Participants: </strong>Twenty adults using the OFD service at least once a month were recruited.</p><p><strong>Results: </strong>The mean age of the sample was 28 years. 75 % were females, over 80 % had completed higher education and 20 % lived with children < 18 years of age. Over half used OFD service two to five times per week. Participants expressed that both smartphone's in-built screen recording function and third-party screen recording application are easy-to-use and time-efficient with high levels of user satisfaction. A range of marketing strategies were observed on the OFD platform. These included the presence of, and strategic placement of selected food products, price discounts and promotion strategies. Participants appeared to engage with marketing strategies through multiple clicks to reduce the total cost of their OFD order.</p><p><strong>Conclusions: </strong>Our study demonstrates that screen recording is an acceptable method for capturing and assessing consumers' real-time exposure to, and engagement with, a range of marketing strategies on the OFD platform. Studies with larger samples are needed to substantiate our findings.</p>","PeriodicalId":20951,"journal":{"name":"Public Health Nutrition","volume":" ","pages":"e88"},"PeriodicalIF":3.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12100556/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144050778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}