Changes in Patient Care Experience After Private Equity Acquisition of US Hospitals

Private equity acquisitions of health care facilities have rapidly increased over the past decade. However, little is known about the effects of private equity acquisitions of US hospitals on patient care experience.

To evaluate whether the acquisition of hospitals by private equity firms was associated with changes in measures of patient-reported experience compared with matched control hospitals from 2008 through 2019.

This cohort study identified 73 US hospitals newly acquired by private equity firms and 293 matched control (nonacquired) US hospitals from 2008 through 2019. An event study, difference-in-differences design was used to evaluate changes in patient experiences measures from 3 years before to 3 years after private equity acquisition.

The primary outcomes were 2 global measures of patient-reported care experience from the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) survey, which included patients' overall hospital rating and willingness to recommend the hospital. Secondary outcomes included the 7 other HCAHPS measures encompassing clinical process, communication, and environmental measures.

There were 73 private equity-acquired hospitals and 293 matched control hospitals. The percentage of patients rating hospitals as a 9 or 10, on a scale of 0 to 10, decreased at private equity-acquired hospitals (65.0% before acquisition and 65.2% after acquisition) when compared with control hospitals (66.2% to 69.2%) during the postacquisition period relative to the preacquisition period with a difference-in-differences estimate of -2.4 percentage points (95% CI, -3.9 to -0.9). In addition, the percentage of patients who would definitely recommend the hospital also decreased at private equity-acquired hospitals (66.9% before acquisition and 65.5% after acquisition) compared with control hospitals (68.2% to 69.3%) with a difference-in-difference estimate of -2.1 percentage points (95% CI, -3.6 to -0.7). For both of these global measures of patient experience, the difference between private equity-acquired and control hospitals increased over time and was largest in year 3 after acquisition (-5.2 percentage points [95% CI, -8.8 to -1.5] and -4.4 percentage points [95% CI, -8.0 to -0.70] for each measure, respectively). For secondary measures of patient care experience, there was a decrease in patient-reported responsiveness of hospital staff at private equity-acquired hospitals compared with control hospitals (-1.3 percentage points [95% CI, -2.4 to -0.2]), but no differential change across other measures of clinical process, communication, and environment.

Patient care experience worsened after private equity acquisition of hospitals. These findings raise concern about the implications of private equity acquisitions on patient care experience at US hospitals.