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Christmas article. Significant difference in plate prices in the Hvidovre Hospital canteen

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INTRODUCTION: Following price hikes in the Hvidovre Hospital canteen and continual discussions concerning the unpredictability of meal prices we decided to examine, if there was a difference in the weight of canteen plates, and if the two available weight scales measured differently.

METHODS: We initially conducted a pilot study and weighed 50 plates twice, once on each weight scale connected to the cash register in the canteen. After an interim analysis and a new power calculation, we weighed an additional 88 plates, but on one scale only.

RESULTS: The pilot study showed an average plate price of 0.32 (95% confidence interval (CI): -0.07-0.72) DKK, and that the two available weight scales were calibrated the same. Following weighing of all 138 plates we found an average plate price of 0.35 (95% CI: 0.12-0.58) DKK, a median plate price of 0.46 DKK and a range of -3.57-2.76 DKK.

CONCLUSIONS: The average yearly plate rental cost of purchasing a meal at the canteen amounts to 70 DKK, if purchased every working day. The yearly plate rental cost may vary from -714 DKK, for the lightest plate, to 552 DKK for the heaviest plate. The authors recommend sticking to a light plate should you find one.

Translated title of the contributionChristmas article. Significant difference in plate prices in the Hvidovre Hospital canteen
Original languageDanish
JournalUgeskrift for Laeger
Volume180
Issue number50
ISSN0041-5782
Publication statusPublished - 10 Dec 2018

ID: 56067731