Influenza immunization rate (age 65+)

Clinical Quality & Outcomes

How this indicator is defined

Methodology version v1.0

Percentage of rostered patients age 65+ who have a documented influenza vaccination during the current flu season.

Proportion of eligible patients (percentage)

The percentage of eligible patients (the denominator) who have at least one Influenza immunization record within the 1-year window. Each patient is counted once.

Data inputs

  • Influenza immunization

Derived from

What this indicator measures— Name, alignment, goal, rationale.
Indicator nameField 1 — Indicator name
Influenza immunization rate (age 65+)
AlignmentField 2 — Alignment
  • National Advisory Committee on Immunization (NACI) recommendations
  • Ontario Immunization Schedule — influenza for adults 65+
Strategic goalField 3 — Strategic goal
Reduce influenza-related morbidity and mortality in the elderly population through annual vaccination.
RationaleField 5 — Rationale
Patients age 65+ are at highest risk of influenza complications including hospitalization and death. Annual vaccination reduces hospitalization by 30–40% in this population.
How it's computed— Scoring method, numerator, denominator, inclusions, exclusions.
NumeratorField 6 — Numerator
Rostered patients in the denominator with an influenza vaccine administration documented in the EMR within the current flu season (Sept 1 – March 31 of the reporting period).
DenominatorField 7 — Denominator

Active rostered patients, age 65+ at reporting-period end.

  • Sex eligibility: F, M
  • Age range: 65–120
  • Active as of reporting-period end: yes
ExclusionsField 9 — Exclusions
  • Patients with documented severe allergy/anaphylaxis to influenza vaccine components.
  • Patients deceased before the reporting-period end date.
How patients are attributed— Attribution rule and risk adjustment.
Attribution ruleField 10 — Attribution rule
Enrolment (rostered)
Risk-adjustment modelField 11 — Risk-adjustment model
None
How comparison works— Peer group, reliability threshold, peer comparator.
Reliability thresholdField 13 — Reliability threshold
20
Data + reporting— Data source, reporting frequency, direction of improvement, limitations.
Reporting frequencyField 15 — Reporting frequency
quarterly
Direction of improvementField 16 — Direction of improvement
Higher is better
Targets + governance— Target, justification, owner, review, approval, version, notes.
TargetField 18 — Target
70.0% — the clinic's target for this indicator, set by the product owner.
Methodology versionField 23 — Methodology version
v1.0