Tracking smartphone's with mobile SMS technology as dietary data collection method: A case study in Lynge School.
Forfatter
Koirala, Sagar
Semester
4. semester
Udgivelsesår
2015
Afleveret
2015-06-04
Antal sider
58
Abstract
Dette studie undersøger, om det er muligt at bruge smartphone‑tracking og SMS‑beskeder til at indsamle data om skoleelevers frokostvaner, og hvilke praktiske udfordringer der opstår i en virkelig skolesammenhæng. Undersøgelsen blev gennemført blandt 7.- og 9.-klasseselever på Lynge Skole og fokuserede på elevernes "foodscape" – de steder i og omkring skolen, hvor der kan købes mad. Data blev indsamlet på tre måder: en spørgeskemaundersøgelse om socioøkonomisk baggrund og frokostvaner (hvor de køber mad, og hvad de spiser); tre sporingsenheder installeret i tre madsteder i skolens foodscape, som registrerede elevernes smartphones via deres MAC‑adresser (enhedens unikke id) i frokostpausen; og korte SMS‑spørgsmål, sendt enkeltvis eller samlet via et websystem, om dagens køb og indtag. Data blev analyseret i SPSS med korrelationer og en generel lineær model. Resultaterne viste sammenhænge mellem klassetrin/køn og frokostadfærd: 9.-klassedsdrenge gik oftere ud for at købe pizza ved madsteder uden for skolen, mens 7.-klasseselever oftere medbragte mad hjemmefra. Der var dog ikke signifikant overensstemmelse mellem spørgeskema‑, tracking‑ og SMS‑data, hvilket peger på uensartede eller mindre præcise svar på tværs af metoder. Studiet drøfter fordele og begrænsninger ved tracking som datakilde. Konklusionen peger på, at skolebaserede tiltag, fx i kantinens udbud, kan spille en rolle i at påvirke elevers spisevaner. På trods af praktiske udfordringer kan kombinationen af smartphone‑tracking og SMS bruges til at indsamle kostdata, hvis den anvendes med omtanke, men yderligere forskning er nødvendig for at dokumentere metodens gyldighed og pålidelighed.
This study examines whether smartphone tracking and SMS can be used to collect information on students’ lunch habits, and what practical challenges arise in a real school setting. The work was conducted with 7th- and 9th-grade students at Lynge School and focused on their "foodscape"—the places in and around the school where food is sold. Data were gathered in three ways: a questionnaire on socioeconomic background and lunchtime patterns (where food is bought and what is eaten); three tracking devices installed at three food outlets in the school foodscape that detected students’ smartphones by their MAC addresses (the device’s unique identifier) during the lunch period; and brief SMS questions, sent individually or to groups via a web system, about that day’s purchasing and eating. Data were analyzed in SPSS using correlations and a general linear model. Findings showed differences by grade and gender: 9th-grade boys more often left to buy pizza at outlets outside the school, while 7th-grade students more often brought food from home. However, agreement between the questionnaire, tracking, and SMS data was not statistically significant, suggesting inconsistent or less accurate responses across methods. The paper discusses strengths and limitations of tracking as a data source. The study concludes that school-level measures, such as canteen offerings, may help shape students’ eating habits. Despite practical challenges, combining smartphone tracking with SMS can be a useful way to collect dietary data if used carefully, but further research is needed to establish the method’s validity and reliability.
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