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Data Analysis Flashcards

7 cards from real CCDS practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 Data Analysis flashcards as text
  1. Which statistical measure is most appropriate for describing the central tendency of a skewed distribution of patient length-of-stay data?

    Answer: Median

    The median is preferred over the mean for skewed distributions because it is not distorted by extreme outliers.

  2. A hospital's case-mix index (CMI) dropped from 1.85 to 1.72 over one quarter. Which data analysis step should a CDS specialist perform first?

    Answer: Stratify the CMI decline by service line to identify where the drop occurred

    Stratifying by service line pinpoints which area drove the CMI decline before any corrective action is taken.

  3. In a clinical data quality audit, a CDS specialist finds that 15% of records lack a principal diagnosis. This metric is best classified as a measure of:

    Answer: Data completeness

    Completeness measures whether required data elements are present in the record.

  4. A CDS program wants to benchmark its query response rate against national standards. Which data source would provide the most relevant external comparison?

    Answer: ACDIS CDI industry survey benchmarks

    ACDIS publishes annual CDI industry surveys that provide national benchmarks for query response and agreement rates.

  5. When analyzing physician query agreement rates, a CDS specialist notes that one physician has a 95% agreement rate while the department average is 72%. This finding most likely indicates:

    Answer: Queries to this physician may be leading or overly directive

    An unusually high agreement rate may signal that queries are written in a leading manner, prompting compliance concerns.

  6. Which metric directly measures the financial impact of a CDS program on hospital reimbursement?

    Answer: Complication and comorbidity (CC/MCC) capture rate

    The CC/MCC capture rate reflects how often higher-severity diagnoses are documented, directly affecting MS-DRG assignment and reimbursement.

  7. A CDS specialist is reviewing data showing that mortality-indexed cases have a lower observed-to-expected (O/E) mortality ratio after query intervention. This result indicates:

    Answer: Documentation improvement has better captured patient severity, lowering the O/E ratio

    A lower O/E ratio after documentation improvement means the denominator (expected deaths based on severity) increased, reflecting more accurate severity capture.