Supplementary Material for: Evolution of Web-Based Training Videos Provided by the German Respiratory League for the Correct Inhalation Technique

Background/Objective: To assess whether and how the use of scientifically established Web-based training videos for teaching correct inhalation technique in patients with chronic airway diseases has become accepted among the wider population. Methods: The viewing trends of 141 freely available YouTube videos (full playing time, 01:31–04:37 min:s) provided by the German Respiratory League, covering a broad range of internationally prescribed devices, were analyzed over a 10-year period. Specific emphasis was placed both on German and international videos. Results: The total number of views was 3,350,678. Non-German videos (English, Russian, Turkish, Greek, Arabic, Farsi, and Slovakian) accounted for 23.2% of the views. The number of views steadily increased between 2011 and 2020 with a mean annual increase of 54.0% (range 24.5/119.9%) compared to the respective previous year. By 2020, the incidence of views per 100,000 German inhabitants was 725 for German videos only and 1,030 for all videos. In terms of the annual trend, there were two peak viewing periods, namely in spring and late fall, while the lowest amount of views occurred in summer. Conclusion: This study highlights the rising impact of Web-based training videos used for teaching the correct use of inhalation devices, with a steady increase in the number of annual views and a clear seasonal peaking of views in spring and late fall.背景与目的：本研究旨在评估针对慢性气道疾病患者教授正确吸入技术的科学认证网络教学视频，是否及如何在更广泛人群中获得认可。研究方法：本研究对德国呼吸联盟（German Respiratory League）提供的141条免费公开YouTube视频展开了为期10年的观看趋势分析。上述视频总播放时长介于1分31秒至4分37秒之间，涵盖全球范围内临床处方的各类吸入装置，研究特别着重关注了德语视频与国际语种视频两类样本。研究结果：总观看量达3,350,678次，其中非德语视频（涵盖英语、俄语、土耳其语、希腊语、阿拉伯语、波斯语及斯洛伐克语）占总观看量的23.2%。2011年至2020年间，观看量持续稳步增长，相较上一年度的年均增幅达54.0%，年度增幅区间为24.5%至119.9%。截至2020年，仅德语视频的人均观看量（每10万德国居民）为725次，全部视频的人均观看量则为1,030次。从年度趋势来看，观看量存在两个峰值时段，即春季与深秋，而夏季的观看量最低。结论：本研究表明，用于教授正确使用吸入装置的网络教学视频影响力正持续提升，年度观看量稳步增长，且观看量存在明确的春季与深秋季节性峰值。