*RAND Corporation, Santa Monica, CA
†Leonard D. Schaeffer Center for Health Policy & Economics, University of Southern California, Los Angeles, CA
‡Department of Medicine, Division of General Internal Medicine and Health Services Research, University of California, Los Angeles, CA
R.C. and T.G. shared first authorship.
R.C. and T.G. contributed equally to this work, including securing funding, study design, analysis, writing, reviewing, and revising; are the guarantors of this work and, as such, had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. B.T. contributed to the study design, analysis, and reviewing. R.S. contributed to study design, funding, writing, and reviewing. D.G. contributed to the study design and reviewing. K.N. contributed to reviewing.
Supported by a RAND Investigator Initiated Research Award (RIR; PIs: R.C. and T.G.) and NICHD (R01HD087257; PI: R.S.).
The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
The authors report no conflicts of interest.
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