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What does a Category IC rating mean for an infection control recommendation?
ARequired by federal or state regulation or standard
BSuggested, on suggestive studies or a rationale
CStrongly recommended and supported by strong trials
DLeft open, because evidence and consensus are absent
Answer & Solution
Correct answer: A. Required by federal or state regulation or standard
1. Recommendations are categorized by the strength of the data and rationale behind them.
2. Category IC means required for implementation, as mandated by federal or state regulation or standard.
3. Ratings are sometimes combined, as in IB/IC, where a regulation compels a practice that evidence also supports.
4. Category IA is strongly recommended and strongly supported by well-designed studies.
5. Category II is suggested for implementation on suggestive studies or a theoretical rationale.
6. Where evidence or consensus is missing, no recommendation is made and the issue is left unresolved.
_Source: CDC Guideline for Isolation Precautions: Preventing Transmission of Infectious Agents in Healthcare Settings (2007), Part III, section Part IV: Recommendations_
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