And we see the similarity here: they're all relatively low-wage jobs.
The comparison here shouldn't be between high-paid jobs (doctor) and low-paid ones (nurse), rather between low-paid jobs and other low-paid jobs.
The bottom line is that those with lower-wage jobs will be the ones having to deal with the worse things, but generally-speaking women tend to take up the less dangerous, more comfortable low-wage jobs. Think teachers, nurses, secretaries against soldiers, police officers, construction workers.