Data Analysis & Reporting Flashcards
7 cards from real ECC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Analysis & Reporting flashcards as text
A hospital wants to identify whether time of day affects STEMI mortality. Which analytical approach is most appropriate?
Answer: Logistic regression controlling for time of day along with patient severity variables
Logistic regression allows modeling of binary outcomes (survival/death) while controlling for confounders, enabling isolation of the independent effect of time of day.
In an ECC QI dashboard, a 'funnel plot' is most useful for:
Answer: Comparing hospital performance while accounting for volume differences
Funnel plots display institution performance against a benchmark with control limits that widen for smaller-volume sites, providing fair comparisons across hospitals of different sizes.
Which data linkage method allows EMS cardiac arrest records to be matched with hospital discharge data to track survival outcomes?
Answer: Probabilistic or deterministic record linkage using patient identifiers
Probabilistic or deterministic record linkage matches EMS and hospital records using identifiers like name, date of birth, and incident date to track patient outcomes across care settings.
A cardiac arrest QI team reviews data showing VF/pVT accounts for 25% of OHCA cases, but represents 70% of survivors. This finding best illustrates:
Answer: The critical importance of rhythm stratification in reporting outcomes
This disparity demonstrates why Utstein reporting stratifies outcomes by initial rhythm — shockable rhythms have dramatically better survival, which inflates overall rates if not separated.
When calculating the 'call-to-shock interval' from EMS records, which two time stamps are used?
Answer: Call received time and time of first defibrillation
The call-to-shock interval is measured from the time the dispatch center receives the 911 call to the time the first defibrillation shock is delivered.
An ECC coordinator notes that 20% of cardiac arrest cases in the registry are missing 'witnessed status' data. This is best classified as:
Answer: Missing data that may bias outcome analysis and must be addressed
Missing witnessed status data is not random — arrests with unknown witnesses may differ systematically, potentially biasing survival analyses if cases are excluded or imputed incorrectly.
The AHA's 'Mission: Lifeline' program tracks STEMI system performance using which primary process metric?
Answer: First medical contact-to-device (FMC2D) time ≤90 minutes
Mission: Lifeline uses FMC2D time ≤90 minutes as its primary STEMI system performance metric, encompassing both pre-hospital and in-hospital delay reduction.