Development and feasibility testing of the smartphone-based dietary record app NutriDiary (beta version)

AbstractSmartphone technology has the potential to facilitate dietary assessment in epidemiological studies. Measurement error might be reduced by real time recording being more feasible with mobile methods. Our aim was to develop NutriDiary, a smartphone app for conducting three-day weighed dietary records. It provides a digital version of the established pen-and-paper method in the Dortmund Nutritional and Anthropometric Longitudinally Designed (DONALD) study, an open cohort study from infancy to adulthood. NutriDiary was developed as a text-based app including brand specific recording of food products. Usability of the beta version of NutriDiary was evaluated in the DONALD study. Participants or their parents were offered to test the app for the annual dietary record and were asked to fill in an app-integrated evaluation questionnaire. Usability was assessed by the System Usability Scale (SUS) and in-app behavior recordings. In the beta version of NutriDiary, a consumed food item is selected using a free-text search from the integrated in-house database LEBTAB. To ease the process of recording, NutriDiary offers some usability features such as a recipe editor, an integrated help mode and a photo function for collecting information on branded food products. In total, 32 mostly female participants (69%) used the app with 21 subjects recording their own dietary intake and 11 subjects conducting a record for their child. However, a relatively large proportion of DONALD participants also refused using the app because they preferred the traditional pen-and-paper method as being easier. Among participants of the feasibility study, subjective usability of NutriDiary was “good” but considerable differences in individual ratings were observed (median SUS = 80, IQR = 23.75, minimum = 45). Although 38% of participants reported technical issues, 88% stated they would use the app again. Technical problems included issues related to setting the time, editing of entered food items and the photo function. In-app behavior recordings showed that the help mode and recipe function were well-used (72% and 63%, respectively). Feedback from the study staff revealed that the post-processing of the dietary data obtained with NutriDiary was still time-consuming. Overall, the beta version of the NutriDiary app was well-received by most participants. Some aspects for improvement such as a barcode scanning function and extension of the database were identified. Moreover, NutriDiary will be further optimized by implementing an automated recipe simulation function.

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Evaluating Mobile Apps For Dietary and Food Timing Assessment For Use in Research and Clinical Assessment (Preprint)

10.2196/preprints.35858 ◽

2021 ◽

Author(s):

Siena Gioia ◽

Irma M Vlassac ◽

Demsina Babazadeh ◽

Noah L Fryou ◽

Elizabeth Do ◽

...

Keyword(s):

Dietary Intake ◽

Keyword Search ◽

Mobile Apps ◽

Dietary Assessment ◽

Registered Dietitian ◽

Food Record ◽

User Privacy ◽

Privacy Policies ◽

Dietary Record ◽

System Usability Scale

UNSTRUCTURED Abstract: Over the last decade, health apps have become an increasingly popular tool utilized by clinicians and researchers to track food consumption and exercise. However, as consumer apps have primarily focused on tracking dietary intake and exercise, many lack technological features to facilitate the capture of critical food timing details. To determine a viable app that recorded both dietary intake and food timing for use in our clinical study, we evaluated the timestamp data, usability, privacy policies, accuracy of nutrient estimates, and general features of 11 mobile apps for dietary assessment. Apps were selected using a keyword search of related terms and the following apps were reviewed: Bitesnap, Cronometer, DiaryNutrition, DietDiary, FoodDiary, FoodView, Macros, MealLogger, myCircadianClock, MyFitnessPal, and MyPlate. Our primary goal was identifying apps that record food timestamps, which 8 of the reviewed apps did (73%). Of those, only 4/11 (36%) allowed users to edit the timestamps, an important feature. Next, we sought to evaluate the usability of the apps, using the System Usability Scale (SUS) across 2 days, with 82% of the apps receiving favorable scores for usability (9/11 apps). To enable use in research and clinic settings, the privacy policies of each app were systematically reviewed using common criteria with 1 Health Insurance Portability and Accountability Act (HIPAA) compliant app (Cronometer). Furthermore, protected health information is collected by 9/11 (81%) of the apps. Lastly, to assess the accuracy of nutrient estimates generated by these apps, we selected 4 sample food items and one researcher’s 3-day dietary record to input into each app. The caloric and macronutrient estimates of the apps were compared to nutrient estimates provided by a registered dietitian using the Nutrition Data System for Research (NDSR). Compared to the 3-day food record, the apps were found to consistently underestimate calories and macronutrients compared to NDSR. Overall, we find the Bitesnap app to provide flexible dietary and food timing functionality capable for research or clinical use with the majority of apps lacking in necessary food timing functionality or user privacy.

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Adaptation and Evaluation of Myfood24-Germany: A Web-Based Self-Administered 24-h Dietary Recall for the German Adult Population

Nutrients ◽

10.3390/nu12010160 ◽

2020 ◽

Vol 12 (1) ◽

pp. 160

Author(s):

Stefanie A. J. Koch ◽

Johanna Conrad ◽

Linda Hierath ◽

Neil Hancock ◽

Sarah Beer ◽

...

Keyword(s):

Completion Time ◽

Food Packaging ◽

Adult Population ◽

Free Text ◽

User Friendliness ◽

Final Recall ◽

Web Based ◽

Dietary Recall ◽

System Usability Scale ◽

Free Text Search

Our aim was to develop and evaluate a German adaptation of myfood24, a fully automated, web-based 24-h dietary recall (24HDR). To complete a self-administered 24HDR with myfood24, users have to search and enter consumed foods within the underlying database by a free text search. The adaptation process thus mainly consisted of the development of an appropriate food database. myfood24-Germany was evaluated in 92 adults aged 17–78 years (study 1). Participants completed four non-consecutive 24HDRs and answered an evaluation questionnaire after the final recall. The System Usability Scale Score (SUS Score, 0–100) was calculated. Users’ search behavior was examined with screen recordings in 15 adults aged 20–60 years (study 2). Participants had to enter three sample meals presented as food packaging or pictures. The final database included 11,501 food items (7203 generic and 4298 branded items) with up to 131 nutrients. In study 1, the median completion time for a 24HDR was 15 min. The median SUS score of 78 indicated good usability. The majority of participants considered the overall user-friendliness as good (46%) or very good (21%), and 75% were willing to use myfood24-Germany regularly. Both studies showed that finding and choosing an appropriate item within the database was a major challenge. A German version of myfood24 was successfully developed. The user evaluation indicated a short completion time, good usability and acceptability of the tool, and confirmed its feasibility for repeated short-term application.

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Identification of psychological correlates of dietary misreporting under laboratory and free-living environments

British Journal Of Nutrition ◽

10.1017/s000711452000389x ◽

2020 ◽

pp. 1-12

Author(s):

Mark Hopkins ◽

Joanna Michalowska ◽

Stephen Whybrow ◽

Graham W. Horgan ◽

R. James Stubbs

Keyword(s):

Home Environment ◽

Emotional Eating ◽

Dietary Assessment ◽

Eating Behaviour ◽

Openness To Experience ◽

Psychological Traits ◽

Psychological Correlates ◽

Dietary Record ◽

Assessment Techniques ◽

Diet History

Abstract Errors inherent in self-reported measures of energy intake (EI) are substantial and well documented, but correlates of misreporting remain unclear. Therefore, potential predictors of misreporting were examined. In Study One, fifty-nine individuals (BMI = 26·1 (sd 3·8) kg/m2, age = 42·7 (sd 13·6) years, females = 29) completed a 14-d stay in a residential feeding behaviour suite where eating behaviour was continuously monitored. In Study Two, 182 individuals (BMI = 25·7 (sd 3·9) kg/m2, age = 42·4 (sd 12·2) years, females = 96) completed two consecutive days in a residential feeding suite and five consecutive days at home. Misreporting was directly quantified by comparing covertly measured laboratory weighed intakes (LWI) with self-reported EI (weighed dietary record (WDR), 24-h recall, 7-d diet history, FFQ). Personal (age, sex and %body fat) and psychological traits (personality, social desirability, body image, intelligence quotient and eating behaviour) were used as predictors of misreporting. In Study One, those with lower psychoticism (P = 0·009), openness to experience (P = 0·006) and higher agreeableness (P = 0·038) reduced EI on days participants knew EI was being measured to a greater extent than on covert days. Isolated associations existed between personality traits (psychoticism and openness to experience), eating behaviour (emotional eating) and differences between the LWI and self-reported EI, but these were inconsistent between dietary assessment techniques and typically became non-significant after accounting for multiplicity of comparisons. In Study Two, sex was associated with differences between LWI and the WDR (P = 0·009), 24-h recall (P = 0·002) and diet history (P = 0·050) in the laboratory, but not home environment. Personal and psychological correlates of misreporting identified displayed no clear pattern across studies or dietary assessment techniques and had little utility in predicting misreporting.

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Reproducibility and relative validity of a semi-quantitative food frequency questionnaire for the Chinese lactating mothers

Nutrition Journal ◽

10.1186/s12937-021-00678-5 ◽

2021 ◽

Vol 20 (1) ◽

Author(s):

Ye Ding ◽

Fang Li ◽

Ping Hu ◽

Mei Ye ◽

Fangping Xu ◽

...

Keyword(s):

Food Frequency Questionnaire ◽

Dietary Assessment ◽

Correlation Coefficients ◽

Cost Effective ◽

Assessment Method ◽

Food Frequency ◽

Relative Validity ◽

Lactating Mothers ◽

Dietary Record ◽

Spearman’S Correlation

Abstract Background The dietary nutritional status of the lactating mothers is related to maternal health and has a significant impact on the growth and development of infants through the secretion of breast milk. The food frequency questionnaire (FFQ) is the most cost-effective dietary assessment method that can help obtain information on the usual dietary pattern of participants. Until now, the FFQs have been used for different populations in China, but there are few FFQs available for the lactating mothers. We aimed to develop a semi-quantitative, 156-item FFQ for the Chinese lactating mothers, and evaluate its reproducibility and relative validity. Methods A total of 112 lactating mothers completed two FFQs and one 3-d dietary record (3DR). The first FFQ (FFQ1) was conducted during postpartum at 60–65 days and the second FFQ (FFQ2) during subsequent follow-up at 5 weeks. The 3DR was completed with portion sizes assessed using photographs taken by the respondent before and after eating (instant photography) 1 week after FFQ1. Results For reproducibility, the Spearman’s correlation coefficients for food ranged from 0.34 to 0.68, and for nutrients from 0.25 to 0.61. Meanwhile, the intra-class correlation coefficients for food ranged from 0.48 to 0.87, and for nutrients from 0.27 to 0.70. For relative validity, the Spearman’s correlation coefficients for food ranged from 0.32 to 0.56, and for nutrients from 0.23 to 0.72. The energy-adjusted coefficients for food ranged from 0.26 to 0.55, and for nutrients from 0.22 to 0.47. Moreover, the de-attenuation coefficients for food ranged from 0.34 to 0.67, and for nutrients from 0.28 to 0.77. The Bland-Altman plots also showed reasonably acceptable agreement between the two methods. Conclusions This FFQ is a reasonably reproducible and a relative valid tool for assessing dietary intake of the Chinese lactating mothers.

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Comparison of the validity, perceived usefulness and usability of I-MeDeSA and TEMAS, two tools to evaluate alert system usability: a study protocol

BMJ Open ◽

10.1136/bmjopen-2021-050448 ◽

2021 ◽

Vol 11 (8) ◽

pp. e050448

Author(s):

Romaric Marcilly ◽

Wu Yi Zheng ◽

Regis Beuscart ◽

Melissa T Baysari

Keyword(s):

Human Factors ◽

Convergent Validity ◽

Perceived Usefulness ◽

Decision Makers ◽

Free Text ◽

Alert System ◽

System Usability Scale ◽

System Usability ◽

Ethical Approval ◽

Alerting Systems

IntroductionResearch has shown that improvements to the usability of medication alert systems are needed. For designers and decisions-makers to assess usability of their alert systems, two paper-based tools are currently available: the instrument for evaluating human-factors principles in medication-related decision support alerts (I-MeDeSA) and the tool for evaluating medication alerting systems (TEMAS). This study aims to compare the validity, usability and usefulness of both tools to identify their strengths and limitations and assist designers and decision-makers in making an informed decision about which tool is most suitable for assessing their current or prospective system.Methods and analysisFirst, TEMAS and I-MeDeSA will be translated into French. This translation will be validated by three experts in human factors. Then, in 12 French hospitals with a medication alert system in place, staff with expertise in the system will evaluate their alert system using the two tools successively. After the use of each tool, participants will be asked to fill in the System Usability Scale (SUS) and complete a survey on the understandability and perceived usefulness of each tool. Following the completion of both assessments, participants will be asked to nominate their preferred tool and relay their opinions on the tools. The design philosophy of TEMAS and I-MeDeSA differs on the calculation of a score, impacting the way the comparison between the tools can be performed. Convergent validity will be evaluated by matching the items of the two tools with respect to the usability dimensions they assess. SUS scores and answers to the survey will be statistically compared for I-MeDeSA and TEMAS to identify differences. Free-text responses in surveys will be analysed using an inductive approach.Ethics and disseminationEthical approval is not required in France for a study of this nature. The results will be published in a peer-reviewed journal.

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TWISTED POUCH SYNDROME - A DIFFICULT TO DIAGNOSE MECHANICAL COMPLICATION OF ILEAL POUCH-ANAL ANASTOMOSIS: OUTCOMES AFTER REDO POUCH PROCEDURES

Inflammatory Bowel Diseases ◽

10.1093/ibd/izaa347.041 ◽

2021 ◽

Vol 27 (Supplement_1) ◽

pp. S16-S17

Author(s):

Stefan Holubar ◽

Amy Lightner ◽

Taha Qazi ◽

Erica Savage ◽

Justin Ream ◽

...

Keyword(s):

Ileal Pouch ◽

Ileal Pouch Anal Anastomosis ◽

Free Text ◽

Mechanical Complication ◽

Rectal Pain ◽

Bowel Habits ◽

Additional Surgery ◽

Free Text Search ◽

Anal Anastomosis ◽

Redo Pouch

Abstract Background Ileal pouch-anal anastomosis (IPAA) is a technically demanding procedure. Intraoperatively, great care must be taken to assure a straight superior mesenteric axis. Rarely, twisted pouches are inadvertently constructed, resulting in deviations of expected pouch function, i.e. patients readily able to open their bowels on average 7x/24 hours without pain. Twisted pouches may result in symptoms classified as pouch dysfunction. Herein we describe our quaternary pouch referral center experience with twisted pouch syndrome (TPS). Methods We performed a retrospective review of our prospectively maintained pouch registry from 1995 – 2020. Patients were identified using free-text search of redo IPAA operative reports for variations of the term “twist”. We defined twisted pouch syndrome as intraoperative findings of twisting of the pouch as the primary pathology. Data are presented as frequency (proportion) or median (interquartile range). Results Over 25-years, we identified 29 patients with confirmed TPS who underwent a redo pouch procedure by 10 surgeons. Overall, 65% were female, median BMI 21.2 (19.5 – 26) kg/m2. The duration from the index IPAA to the redo procedure was 4 (2 – 8) years; all (100%) were referral cases constructed elsewhere. Original diagnoses included: ulcerative colitis (90%), FAP (10%), lack of interstitial cells of Cajal in 1 patient (10%). All patients presented with symptoms of pouch dysfunction including erratic bowel habits (96%) with urgency/frequency, abdominal/pelvic/rectal pain (92%), and obstructive symptoms (88%). Most had (75%) been treated for chronic pouchitis with antibiotics or biologics, and 46% had undergone 1 or more additional surgery. Prior to redo IPAA procedure patients underwent a thorough workup: 100% pouchoscopy, 96% GGE, 93% underwent EUA, 88% MRI, 73% manometry, and 42% defecography. TPS was diagnosed in 15% by pouchoscopy, in 10% by imaging, and in 75% was diagnosed intra-operatively at re-diversion (20%) or revision/redo IPAA (55%). In terms of surgical intervention, 85% were initially re-diverted. A total of 18 (62%) underwent pouch revision, and 10 (38%) required redo-IPAA. Short-term outcomes: LOS 7.5 (5 – 9) days, any complication 48%, readmission 11%, reoperation 3.4%, zero mortalities. After a median follow-up 50 (28 – 60) months, 2 never had loop ileostomy closure, 1 had pouch excision, and 1 a Kock pouch, yielding an overall pouch survival rate of 86%. Conclusions Twisted pouch syndrome presents with pouch dysfunction manifest by erratic bowel habits, unexplained pain, and obstructive (defecation) symptoms. This syndrome may also mimic chronic pouchitis. Despite a thorough workup which may suggest a mechanical problem, many patient may not be diagnosed until time of redo pouch surgery. Redo surgery for twisted pouch syndrome results in long-term pouch survival for the majority.

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An Architecture for Hybrid P2P Free-Text Search

Cooperative Information Agents XI - Lecture Notes in Computer Science ◽

10.1007/978-3-540-75119-9_5 ◽

2007 ◽

pp. 57-71 ◽

Cited By ~ 1

Author(s):

Avi Rosenfeld ◽

Claudia V. Goldman ◽

Gal A. Kaminka ◽

Sarit Kraus

Keyword(s):

Free Text ◽

Text Search ◽

Free Text Search ◽

Hybrid P2p

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DWD Geoportal – Converging open data, metadata and documentation in a user-friendly way

10.5194/ems2021-423 ◽

2021 ◽

Author(s):

Björn Reetz ◽

Hella Riede ◽

Dirk Fuchs ◽

Renate Hagedorn

Keyword(s):

Service Providers ◽

Meteorological Data ◽

Open Data ◽

Time Of Day ◽

Free Access ◽

Free Text ◽

Free Text Search ◽

Easy Integration ◽

Access To Data ◽

User Friendly

Since 2017, Open Data has been a part of the DWD data distribution strategy. Starting with a small selection of meteorological products, the number of available datasets has grown continuously over the last years. Since the start, users can access datasets anonymously via the website https://opendata.dwd.de to download file-based meteorological products. Free access and the variety of products has been welcomed by the general public as well as private met service providers. The more datasets are provided in a directory structure, however, the more tedious it is to find and select among all available data. Also, metadata and documentation were available, but on separate public websites. This turned out to be an issue, especially for new users of DWD's open data.To help users explore the available datasets as well as to quickly decide on their suitability for a certain use case, the Open Data team at DWD is developing a geoportal. It enables free-text search along with combined access to data, metadata, and description along with interactive previews via OGC WMS.Cloud technology is a suitable way forward for hosting the geoportal along with the data in its operational state. Benefits are expected for the easy integration of rich APIs with the geoportal, and the flexible and fast deployment and scaling of optional or prototypical services such as WMS-based previews. Flexibility is also mandatory to respond to fluctuating user demands, depending on time of day and critical weather situations, which is supported by containerization. The growing overall volume of meteorological data at DWD may mandate to allow customers to bring their code to the data&#160;&#8211; for on-demand processing including slicing and interpolation &#8211;&#160; instead of transferring files to every customer. Shared cloud instances are the ideal interface for this purpose.The contribution will outline a protoype version of the new geoportal and discuss further steps for launching it to the public.

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Feasibility and relative validity of a digital photo-based dietary assessment: results from the Nutris-Phone study

Public Health Nutrition ◽

10.1017/s1368980018000344 ◽

2018 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Nicole Prinz ◽

Barbara Bohn ◽

Annamarie Kern ◽

Deborah Püngel ◽

Olga Pollatos ◽

...

Keyword(s):

Dietary Assessment ◽

Nutrient Content ◽

Systematic Bias ◽

Relative Validity ◽

Participant Satisfaction ◽

Digital Photo ◽

Dietary Record ◽

Portion Sizes ◽

User Friendly ◽

Weighed Record

Abstract Objective For dietary assessment, mobile devices with a camera can be used as an alternative to hand-written paper records. The Nutritional Tracking Information Smartphone (Nutris-Phone) study aimed to examine relative validity and feasibility of a photo-based dietary record in everyday life. Design Parallel to the photo-based technique, a weighed record was performed. Participant satisfaction was assessed by questionnaire. A trained nutrition scientist evaluated portion sizes and nutrient content was calculated (DGExpert). Spearman correlation and Bland–Altman analyses were applied. Setting Healthy, non-pregnant volunteers (≥18 years) without intent to lose weight recruited at Ulm University, Germany. Subjects Sixty-six participants (36 % males, median age 22·0 (interquartile range 20·0–25·0) years) took pictures of foods and beverages consumed with a commercially available mobile phone. Results Significant correlation between the photo-based and weighed record was observed: energy (r=0·991), carbohydrate (r=0·980), fat (r=0·972), protein (r=0·988), fibre (r=0·941). Bland–Altman analyses indicated comparable means and acceptable 95 % limits of agreement (energy: −345·2 to 302·9 kJ (−82·5 to 72·4 kcal); carbohydrate: −15·2 to 13·1 g; fat: −6·4 to 6·4 g; protein: −5·9 to 5·6 g; fibre: −2·7 to 2·5 g). However, with increasing intake level, underestimation by the digital method was present (except for fat, all P<0·01). Over 80 % of participants were satisfied with the photo-based record. In nearly 90 %, technical implementation was without major problems. Conclusions Compared with a weighed record, the photo-based dietary record seems to be valid, feasible and user-friendly to estimate energy, macronutrient and fibre intakes, although a systematic bias with increasing levels of intake should be kept in mind.

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Education as a strategy for managing occupational-related musculoskeletal pain: a scoping review

BMJ Open ◽

10.1136/bmjopen-2019-032668 ◽

2020 ◽

Vol 10 (2) ◽

pp. e032668 ◽

Cited By ~ 3

Author(s):

Thorvaldur Skuli Palsson ◽

Shellie Boudreau ◽

Morten Høgh ◽

Pablo Herrero ◽

Pablo Bellosta-Lopez ◽

...

Keyword(s):

Scoping Review ◽

Controlled Trial ◽

Behavioural Therapy ◽

Cochrane Library ◽

Free Text ◽

Work Related ◽

Education Material ◽

Occupational Setting ◽

Free Text Search ◽

Randomised Controlled

BackgroundMusculoskeletal (MSK) pain is the primary contributor to disability worldwide. There is a growing consensus that MSK pain is a recurrent multifactorial condition underpinned by health and lifestyle factors. Studies suggest that education on work-related pain and individualised advice could be essential and effective for managing persistent MSK pain.ObjectiveThe objective of this scoping review was to map the existing educational resources for work-related MSK (WRMSK) pain, and the effects of implementing educational strategies in the workplace on managing WRMSK pain.MethodsThis scoping review assessed original studies that implemented and assessed education as a strategy to manage WMSK pain. Literature search strategies were developed using thesaurus headings (ie, MeSH and CINAHL headings) and free-text search including words related to MSK in an occupational setting. The search was carried out in PubMed, CINAHL, Cochrane Library and Web of Science in the period 12–14 February 2019.ResultsA total of 19 peer-reviewed articles were included and the study design, aim and outcomes were summarised. Of the 19 peer-reviewed articles, 10 randomised controlled trial (RCT) studies assessed the influence of education on work-related MSK pain. Many studies provided a limited description of the education material and assessed/used different methods of delivery. A majority of studies concluded education positively influences work-related MSK pain. Further, some studies reported additive effects of physical activity or ergonomic adjustments.ConclusionsThere is a gap in knowledge regarding the best content and delivery of education of material in the workplace. Although beneficial outcomes were reported, more RCT studies are required to determine the effects of education material as compared with other interventions, such as exercise or behavioural therapy.

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