Replication Data for: Using electronic health records and Internet search information for accurate influenza forecasting

The data for replication contain three parts: Centers for Disease Control and Prevention (CDC) data, Google Trends (GT) data, and Electronic Health Record (EHR) data. All data are obtained and frozen as of July 9, 2016. CDC publish weekly unweighted Influenza-like Illness (ILI) activity level (gis.cdc.gov/grasp/fluview/fluportaldashboard.html). The initial report is subject to revision in later weeks as more data are gathered and processed from participating clinics around the country. We have consolidated the CDC's weekly unweighted ILI activity level data with later revisions into one single csv file. Google Trends (www.google.com/trends) data are publicly available. The query terms that we used were identified from Google Correlate (www.google.com/trends/correlate), where we identified 129 flu-related Google search terms in total. The Google Trends data are then manually downloaded and consolidated into one single csv file. The EHR data are from athenahealth, a provider of cloud-based services and mobile applications for medical groups and health systems (www.athenahealth.com). The data we used are historical values of three nationally aggregated weekly fraction from total patient visit counts: (a) flu visit counts, (b) ILI visit counts, and (c) unspecified viral or ILI visit counts. That is, data reported are rounded fraction of each type of counts to total patient visit counts. The EHR data are available in real time starting from July 2009.本复现研究所用数据集共包含三部分：美国疾病控制与预防中心（Centers for Disease Control and Prevention, CDC）数据、谷歌趋势（Google Trends, GT）数据，以及电子健康档案（Electronic Health Record, EHR）数据。所有数据的获取与冻结时间均为2016年7月9日。 美国CDC每周发布未经加权的流感样病例（Influenza-like Illness, ILI）活动水平数据（数据源地址：gis.cdc.gov/grasp/fluview/fluportaldashboard.html）。由于后续会收集并处理来自全国参与诊所的更多数据，初始发布的ILI活动水平数据会在后续周数中进行修订。我们已将CDC发布的每周未经加权ILI活动水平原始数据及其后续修订版本整合为单个CSV文件。 谷歌趋势（www.google.com/trends）数据为公开可用资源。本次研究所用的查询词通过谷歌关联工具（Google Correlate，www.google.com/trends/correlate）筛选得到，共筛选出129个与流感相关的谷歌搜索词。随后我们手动下载谷歌趋势数据，并将其整合为单个CSV文件。 电子健康档案数据来自athenahealth——一家面向医疗团体与健康系统提供云服务及移动应用的服务商（www.athenahealth.com）。本次使用的数据为三项以总患者就诊人次为基准的全国汇总周度占比历史数据：(a) 流感就诊人次占比；(b) 流感样病例就诊人次占比；(c) 未明确分型的病毒性或流感样病例就诊人次占比。即所公布的数据为各类就诊人次占总就诊人次的四舍五入比例。该电子健康档案数据自2009年7月起可实时获取。