College of Nursing, Idaho State University, Pocatello, ID, USA.
Department of Sociology, University of California - Irvine, Irvine, CA, USA.
Appetite. 2020 Jan 1;144:104482. doi: 10.1016/j.appet.2019.104482. Epub 2019 Oct 5.
To examine if first-year roommates made similar meal plan decisions.
Residence information for 1186 first-year students (N = 593 roommate pairs) and 559 floormates was obtained for the 2015-2016 academic year. Linear generalized estimating equations (GEEs) were used to examine if the number of meals students used over the semester was higher if their roommate used their meal plan more frequently. A logistic GEE examined joint meal plan usage between students and roommates for each month of the semester. To determine if residence, rather than roommate, explained the results, a simulation was conducted by randomly assigning the floormates to a same-sex roommate.
The number of meals students used in spring was higher if the students' roommate had used more meals in spring, even after controlling for the number of meals students used in fall (Female: β = 0.07, 99% CI = 0.00, 0.13; Male: β = 0.10, 99% CI = 0.02, 0.18). Students were more likely to use a meal with their roommate if they were on the same meal plan (Female: OR = 1.61, 99% CI = 1.27, 2.04; Male: OR = 1.57, 99% CI = 1.09, 2.25), and less likely after the first month of being roommates (Female: OR = 0.57-0.25; Male: OR = 0.50-0.22; p < 0.001). The simulation analysis indicated these findings were not due to shared residence.
Students' meal plan choices were associated with their roommates' meal plan choices. Roommates' joint meal plan usage was highest at the start of the year. Strategic roommate pairings may result in students using their meal plan more. Further research should determine the extent of roommate influence on students' diet.
研究大一新生室友的餐饮计划决策是否相似。
获取了 1186 名大一学生（593 对室友）和 559 名同楼层学生在 2015-2016 学年的住宿信息。使用线性广义估计方程（GEE）来检验，如果室友更频繁地使用餐饮计划，学生在整个学期内使用的餐饮次数是否更高。逻辑 GEE 检验了学生和室友在学期每个月共同使用餐饮计划的情况。为了确定是室友的居住位置，而不是室友本身，导致了这些结果，通过随机分配同楼层学生作为同性室友进行了模拟。
即使控制了秋季使用的餐饮次数，春季学生使用的餐饮次数如果其室友在春季使用了更多的餐饮，也会更高（女生：β=0.07，99%置信区间=0.00，0.13；男生：β=0.10，99%置信区间=0.02，0.18）。如果学生与室友使用相同的餐饮计划，他们更有可能与室友一起用餐（女生：OR=1.61，99%置信区间=1.27，2.04；男生：OR=1.57，99%置信区间=1.09，2.25），并且在成为室友后的第一个月后不太可能（女生：OR=0.57-0.25；男生：OR=0.50-0.22；p<0.001）。模拟分析表明，这些发现并非由于共同居住所致。
学生的餐饮计划选择与室友的餐饮计划选择有关。室友共同使用餐饮计划的比例在年初最高。战略室友配对可能会导致学生更多地使用餐饮计划。进一步的研究应该确定室友对学生饮食的影响程度。
