Du Feng (Nursing) and coauthors recently published an article, "Reliability, Construct Validity, and Measurement Invariance of the PROMIS Physical Function 8b—Adult Short Form v2.0" in the journal Quality of Life Research. This study assessed the reliability, construct validity, and measurement invariance of a widely used PROMIS physical function survey among Native Americans residing on or near the Apsáalooke (Crow) Reservation who were living with chronic illnesses.