“CEPR acknowledges this analysis is far from scientific and draws no direct link between raising the minimum wage and payroll gains. Still, it does provide evidence against theoretical negative employment effects of minimum wage increases, CEPR researcher Ben Wolcott writes.”
So, the author of the study admits it proves nothing.
Tiny increases in minimum wage have very, little effect, either positive or negative, as very few people are affected.
Massive increases like the $15.00/hr rate coming to Seattle will kill thousands of jobs, and would kill millions if implemented nationally.