[ProfCrash]

I cannot think of a survey that leaves out demographic information. You can chose not to answer if you like.

Overall I thought it was a well written survey. There are a few places where it would have been nice to have some additional response catagories. Those could have been added if a test sample had been run and the authors had asked for feedback but I don't think that the survey is all that flawed.

I would imagine that the demographic questions will be used the same way demographic questions are used in most studies, to compare across groups. What groups are reading, at what level, using what devices? What groups are borrowing books and what groups are buying books?

Crosstabs and parametric statistics can be fun. I prefer non-parametric statistics and data the lets me develp more sophisticated statistical models but that is personal preference when it comes to data collection.