BACKGROUND: The development of internet technology has greatly increased the ability of patients with chronic obstructive pulmonary disease (COPD) to obtain health information, giving patients more initiative in the patient-physician decision-making process. However, concerns about the quality of website health information will affect the enthusiasm of patients\' website search behavior. Therefore, it is necessary to evaluate the current situation of Chinese internet information on COPD.
OBJECTIVE: This study aims to evaluate the quality of COPD treatment information on the Chinese internet.
METHODS: Using the standard disease name \"\" (\"chronic obstructive pulmonary disease\" in Chinese) and the commonly used public search terms \"\" (\"COPD\") and \"\" (\"emphysema\") combined with the keyword \"\" (\"treatment\"), we searched the PC client web page of Baidu, Sogou, and 360 search engines and screened the first 50 links of the website from July to August 2021. The language was restricted to Chinese for all the websites. The DISCERN tool was used to evaluate the websites.
RESULTS: A total of 96 websites were included and analyzed. The mean overall DISCERN score for all websites was 30.4 (SD 10.3; range 17.3-58.7; low quality), no website reached the maximum DISCERN score of 75, and the mean score for each item was 2.0 (SD 0.7; range 1.2-3.9). There were significant differences in mean DISCERN scores between terms, with \"chronic obstructive pulmonary disease\" having the highest mean score.
CONCLUSIONS: The quality of COPD information on the Chinese internet is poor, which is mainly reflected in the low reliability and relevance of COPD treatment information, which can easily lead consumers to make inappropriate treatment choices. The term \"chronic obstructive pulmonary disease\" has the highest DISCERN score among commonly used disease search terms. It is recommended that consumers use standard disease names when searching for website information, as the information obtained is relatively reliable.

The present study was designed to assess the quality of Chinese-language Internet-based information on HIV/AIDS.
We entered the following search terms, in Chinese, into Baidu and Sogou: \"HIV/AIDS\", \"symptoms\", and \"treatment\", and evaluated the first 50 hits of each query using the Minervation validation instrument (LIDA tool) and DISCERN instrument.
Of the 900 hits identified, 85 websites were included in this study. The overall score of the LIDA tool was 63.7%; the mean score of accessibility, usability, and reliability was 82.2%, 71.5%, and 27.3%, respectively. Of the top 15 sites according to the LIDA score, the mean DISCERN score was calculated at 43.1 (95% confidence intervals (CI) = 37.7-49.5). Noncommercial websites showed higher DISCERN scores than commercial websites; whereas commercial websites were more likely to be found in the first 20 links obtained from each search engine than the noncommercial websites.
In general, the HIV/AIDS related Chinese-language websites have poor reliability, although their accessibility and usability are fair. In addition, the treatment information presented on Chinese-language websites is far from sufficient. There is an imperative need for professionals and specialized institutes to improve the comprehensiveness of web-based information related to HIV/AIDS.