Data collected without identifiers, never coded, that was never tied to an individual, thereby fully protecting health information is considered what form of data?

Question

Options

• AData aggregation
• BAnonymous
• CNon-disclosed
• DAnonymized

• A
  5% (2)
• B
  86% (36)
• C
  2% (1)
• D
  7% (3)

Explanation

Anonymous data (B) is correct because it was never linked to an individual in the first place - no identifiers were collected, no codes were assigned, and no re-identification is possible. This offers the strongest privacy protection because there is simply nothing to trace back.

Why the distractors fail:

• A (Data aggregation) refers to combining data from multiple sources or individuals into summary statistics - it's a technique, not a privacy classification, and underlying records may still be identifiable.
• C (Non-disclosed) is not a recognized data classification in health information privacy law or research ethics; it's a distractor with plausible-sounding language.
• D (Anonymized) is the critical near-miss: anonymized data started with identifiers that were later removed or coded. Because a linkage once existed, re-identification is theoretically possible, making it less protective than truly anonymous data.

Memory tip: Think of it as a birth vs. surgery analogy - anonymous data was born without an identity (never had one), while anonymized data had its identity surgically removed (started with one). "Never coded" = never had one = anonymous.

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