[mistercow]

Yeah, but think about the error bars there. You’re looking at an MoE of around 3% for the entire sample, and more for these subgroups. The real difference could be just a couple percentage points and still be within the confidence interval.

[jihadjihad]

I completely agree--many times, papers from the social sciences appear as exercises in "wringing signal from a sea of noise." They're not always successful or convincing! But often there is wide latitude because of the inherent noise...don't ask me why! I got out of economics for a reason!