This isn't exactly a peer reviewed study, but it fits with my experience growing up in a cloistered conservative community. Men were marriageable when they had a stable job, but women were marriageable as soon as they menstruated and could take care of a home.
https://www.huffingtonpost.com/entry/roy-moore-evangelicalism_us_5a05f4f8e4b0e37d2f37573d
"Courtship, as it’s practiced in some fundamentalist communities, is a way for Christian parents to help arrange their children’s marriages, vet potential partners and make sure their children end up in happy and godly relationships.
Field describes courtship in fundamentalist churches as a process directed by men. The process varies in different communities and from family to family, but it tends to follow a basic pattern. A man is considered ready for marriage when he has a stable source of income, and perhaps his own home ? essentially, when he is able to financially support a family. A woman, meanwhile, is considered ready when she is able to have children and take care of a household."