The gender wage gap is much more complex than the single-figure “cents on the dollar” statistic that is commonly used as shorthand for the problem, FastCompany.com reports.

The recently released “Status of Women in the States: 2015,” a project of the Institute for Women’s Policy Research, peels back the layers around the topic, from geography and age to immigration.

If the gap continues to narrow at the current rate, women in the U.S. won’t see equal pay until 2058, the study finds. But that estimate differs widely from region to region: in West Virginia, Utah, Louisiana, North Dakota and Wyoming, women won’t see equal pay in this century and beyond.

What makes this study different from so many other reports and research on the topic is its comprehensive look at factors beyond the average, Moira Forbes, publisher of ForbesWoman, told Fast Company.

“So often, when we have these conversations, we assume there’s a one-size-fits-all solution,” Forbes said. The solution can’t be found with a blanket fix, but requires deeper explorations of regional and national factors at play, and within a variety of demographics.

Read the entire assessment of the report at FastCompany.com.