Table 2.

Categories and sub-categories with coding example.

Categories	Sub-categories	Coding example
Category 1 Information acquisition channel	Information on fenbendazole obtained by: Mass media, Internet portal YouTube Acquaintance/family	*I first saw it on a TV news report. Then I searched YouTube and read a lot about it. *I read about fenbendazole at an Internet café. *I saw it on YouTube and TV news. *I heard it from an acquaintance while I was in the nursing home. *My family told me the fenbendazole after having seen it from TV.
	General cancer information obtained by: Internet portal Acquaintance/family YouTube	*Generally, I search the Internet, regardless of the articles, blogs, and Q&A *I heard it from my daughter * While surfing the Internet, if I come across anything interesting, I search YouTube. I use YouTube to find additional things
Category 2 Quality of information	Fragmented information obtained by media	*I thought Kim Cheol-min only took fenbendazole. The title of the news article said he only took dog anthelmintics. It did not report that he was taking anticancer drugs.
Category 3 Perception and attitude	Negative attitude: Need to be verified by experts Needs to be filtered by self	*Regarding fenbendazole, it has not been verified. It is difficult for us to know whether the information is true unless experts verify it. *It is difficult to explain exactly, but I can feel whether the information is an exaggerated advertisement. I have to filter it. When I think that the information is true, I apply it to my body. Then I can see if it really works.
	Vague expectation	*No one knows if it will really work *When I hear a story like someone ate something and recovered … it arises a hope for “what if”. Even with the slightest hope like this, I want to try it.