Department of Cardiology, Nordsjællands Hospital, Hillerod, Denmark
Department of Cardiology, Nordsjællands Hospital, Hillerod, Denmark.
BMJ Open. 2024 Mar 20;14(3):e078773. doi: 10.1136/bmjopen-2023-078773.
The Health, Food, Purchases and Lifestyle (SMIL) cohort is a prospective open Danish cohort that collects electronic consumer purchase data, which can be linked to Danish nationwide administrative health and social registries. This paper provides an overview of the cohort's baseline characteristics and marginal differences in the monetary percentage spent on food groups by sex, age and hour of the day.
As of 31 December 2022, the cohort included 11 214 users of a smartphone-based receipt collection application who consented to share their unique identification number for linkage to registries in Denmark. In 2022, the composition of the cohort was as follows: 62% were men while 24% were aged 45-55. The cohort had a median of 63 (IQR 26-116) unique shopping trips. The cohort included participants with a range of health statuses. Notably, 21% of participants had a history of cardiovascular disease and 8% had diabetes before donating receipts.
The feasibility of translating consumer purchase data to operationalisable food groups and merging with registers has been demonstrated. We further demonstrated differences in marginal distributions which revealed disparities in the amount of money spent on various food groups by sex and age, as well as systematic variations by the hour of the day. For example, men under 30 spent 8.2% of their total reported expenditure on sugary drinks, while women under 30 spent 6.5%, men over 30 spent 4.3% and women over 30 spent 3.9%.
The SMIL cohort is characterised by its dynamic, continuously updated database, offering an opportunity to explore the relationship between diet and disease without the limitations of self-reported data. Currently encompassing data from 2018 to 2022, data collection is set to continue. We expect data collection to continue for many years and we are taking several initiatives to increase the cohort.
健康、食品、购买和生活方式（SMIL）队列是一个前瞻性的丹麦开放队列，它收集电子消费者购买数据，可以与丹麦全国性的行政健康和社会登记册相联系。本文概述了队列的基线特征，以及按性别、年龄和一天中的时间划分的食物消费金额的边际差异。
截至 2022 年 12 月 31 日，该队列包括 11214 名使用基于智能手机的收据收集应用程序的用户，他们同意分享他们的唯一识别号码，以便与丹麦的登记册相联系。2022 年，队列的组成如下：62%为男性，24%为 45-55 岁。队列中有中位数为 63（IQR 26-116）次独特的购物旅行。队列中包括各种健康状况的参与者。值得注意的是，21%的参与者有心血管疾病史，8%的参与者在捐赠收据前有糖尿病。
已经证明了将消费者购买数据转化为可操作的食品组并与登记册合并的可行性。我们进一步证明了边缘分布的差异，这些差异揭示了按性别和年龄划分的各种食物消费金额的差异，以及按一天中的时间系统的变化。例如，30 岁以下的男性在他们报告的总支出中花费 8.2%用于含糖饮料，而 30 岁以下的女性花费 6.5%，30 岁以上的男性花费 4.3%，30 岁以上的女性花费 3.9%。
SMIL 队列的特点是其动态、不断更新的数据库，为探索饮食与疾病之间的关系提供了机会，而不受自我报告数据的限制。目前包含 2018 年至 2022 年的数据，数据收集将继续。我们预计数据收集将持续多年，我们正在采取多项举措来增加队列。
