how to understand this sentence

[jasonlulu_2000]

•What’s more, women who worked part-time made greater progress. They did better than the stay-at-home crowd and, in some cases, full-timers, in terms of health and stress.

Does it mean that women working part-time also did better than women working full-time in terms of health and stress?
Or:
Does it mean that both women working part-time and full-time did better than women staying at home?

I cannot understand the sentence because of the commas.

Thanks for your help!

Jason

[Barb_D]

It means the part-timers did better than SOME full-timers.

They did better than stay-at-home moms - no qualifications
They did better than full-timers - in some cases.