Qualitative Analysis Using Obsidian by @ryanjamurphy
Forum post: Using Obsidian for qualitative analysis — a starter environment
Blog post: An Integrated Qualitative Analysis Environment with Obsidian - Axle
Ryan’s post describes everything you need to setup a vault to do qualitative analysis. He even has a starter vault for download with the right plugins so you can just go. To the surprise of no one, you can use Dataview to extract and perform queries on your data.