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Armstrong D, Kline-Rogers E, Jani SM, et al. Potential Impact of the HIPAA Privacy Rule on Data Collection in a Registry of Patients With Acute Coronary Syndrome. Arch Intern Med. 2005;165(10):1125–1129. doi:10.1001/archinte.165.10.1125
Implementation of the Health Insurance Portability and Accountability Act (HIPAA) Privacy Rule has the potential to affect data collection in outcomes research.
To examine the extent to which data collection may be affected by the HIPAA Privacy Rule, we used a quasi-experimental pretest-posttest study design to assess participation rates with informed consent in 2 cohorts of patients eligible for the University of Michigan Acute Coronary Syndrome registry. The pre-HIPAA period included telephone interviews conducted at 6 months that sought verbal informed consent from patients. In the post-HIPAA period, informed consent forms were mailed to ask for permission to call to conduct a telephone interview. The primary outcome measure was the percentage of patients who provided consent. Incremental costs associated with the post-HIPAA period were also assessed.
The pre-HIPAA period included 1221 consecutive patients with acute coronary syndrome, and the post-HIPAA period included 967 patients. Consent for follow-up declined from 96.4% in the pre-HIPAA period to 34.0% in the post-HIPAA period (P<.01). In general, patients who returned written consent forms during the post-HIPAA period were older, were more likely to be married, and had lower mortality rates at 6 months. Incremental costs for complying with the HIPAA Privacy Rule were $8704.50 for the first year and $4558.50 annually thereafter.
The HIPAA Privacy Rule significantly decreases the number of patients available for outcomes research and introduces selection bias in data collection for patient registries.
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