The booming demand for nurse practitioners

• Less than 1% of NPs are unemployed, the study found, and most of them have seen steady wage growth.

Why it matters: These changes are a reflection of broader shifts within the health care system — most notably, the shift from inpatient to outpatient care.

• RNs are now typically leaving inpatient hospital settings earlier in their careers to get the advanced training to become and NP and move to an outpatient setting, the study says. Although the authors don't expect that to lead to "deep and prolonged" RN shortages, it's still a strain on the inpatient workforce.

What's next: Nurse practitioners are providing a lot more care — the number of Medicare beneficiaries billed by a nurse practitioner has doubled. And that trend will continue.

Go deeper: Health care has been adding jobs for over 5 years