Hi all, I'd like to ask u guys some questions related to SAS statistical method. (SQL, any code,,) What I want to see is the percentage of food sales on a daily basis based on the data attached. Please refer to information below to understand the attached file. I want to compare these three groups. [Excel Sheet1] 1) Number of foods sold for same period with the intervention date of last year (Nov,19th 2018 ~ Dec, 14th 2018 / 4 weeks exclude Sat & Sun) - No intervention 2) Number of food sales before the intervention (Oct, 25th 2019 ~ Nov, 15th 2019 / 4 weeks exclude Sat & Sun) - No intervention 3) Number of food sales during the intervention (Nov,18th 2019 ~ Dec, 13th 2019 / 4 weeks exclude Sat & Sun) - Intervention [Background] I classified all foods in school cafeteria as nutrition score and put Alphabet score stickers on them during the intervention time. (A,B,C,D,E - A has the best nutrition composition). And I want to know how these nutri-score stickers affect people's consumption habit. I want to do interrupted time series analysis ultimately, but I want to see the ratio of each group before that. It will be much appreciated if u guys let me know how to solve this problem. This is for my thesis. Please feel free to comment on me if u have questions. 1,2) Caculation system Nutri-Score 3) my key thesis' graph in harvard Univ. (https://search.proquest.com/docview/1820592544?rfr_id=info%3Axri%2Fsid%3Aprimo)
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