Raw Spirometry Dataset: Inspiratory and Expiratory

The following dataset includes raw spirometry data obtained on healthy adults (n = 129; 18-40 years old) at two different laboratory visits. <br> The dataset is comprised of 2,287,213 observations (1,055,236 observations after removing rows labeled as ‘NaN’ to indicate ‘not a number’) and 6 variable columns where each observation is unique to a given subject, visit, trial and pair of time series measurement values for flow and volume. The dataset is provided in long format but can be easily pivoted to wide format if that is desired. This is the reasoning for including NaN rows to pad each trial to match the same length of the longest subject’s trial; some software may be easier to pivot the dataset with this padding included while others may prefer to strip these NaN rows. <br> The second file (Timezero File.xlsx) is a resource for the trials and their corresponding <em>timezero offset</em> value, which indicates at what point the spirometer maneuver begins. The value for timezero offset is the amount of time between the beginning of data collection and the first, full exhalation that is considered in spirometry.本数据集包含129名年龄介于18至40岁的健康成人在两次不同实验室访视中采集的原始肺量计（spirometry）数据。<br>本数据集共包含2,287,213条观测数据（剔除标记为‘NaN’（即not a number，非数值）的行后，剩余1,055,236条观测数据），包含6个变量列；每条观测数据均对应特定受试者、访视、试验以及一组流量与容积的时间序列测量值。本数据集以长格式（long format）存储，若有需要可轻松转换为宽格式（wide format）。<br>这也是保留NaN行以填充每条试验，使其与最长受试者的试验长度保持一致的原因：部分软件在保留此类填充数据的前提下更易完成数据集的宽格式转换，而另一些软件则更适合先剔除这些NaN行后再进行转换。<br>第二个文件（Timezero File.xlsx）为各试验及其对应的时间零点偏移（timezero offset）值提供参考，该值用于指示肺量计检测操作的起始节点。时间零点偏移量指数据采集开始与肺量计检测中认定的首次完全呼气之间的时长。