Under 75 mortality rate from Stroke - ICP Outcomes Framework - Resident Locality

This dataset presents the under-75 mortality rate from stroke, a key indicator within the cardiovascular health domain. It captures the rate of deaths attributed to stroke among individuals aged under 75, using data classified under ICD-10 codes I60 to I69. The dataset is structured to support public health monitoring and policy development by providing age-standardised mortality rates per 100,000 population.

Rationale

Reducing premature mortality from stroke is a public health priority. Monitoring this indicator helps assess the effectiveness of prevention strategies, healthcare interventions, and broader determinants of health. It supports efforts to reduce health inequalities and improve outcomes for cardiovascular conditions.

Numerator

The numerator is the number of deaths from stroke (ICD-10 codes I60 to I69) registered in the respective calendar years. 

Denominator

For single-year rates, the denominator is the population of individuals aged under 75, aggregated into quinary age bands. For three-year rolling averages, it is the population-years (combined populations over three years) for the same age range and structure. Population estimates are based on the 2021 Census.

Caveats

Data may not align precisely with figures published by the Office for National Statistics (ONS) due to differences in postcode lookup versions and the application of comparability ratios in the Office for Health Improvement and Disparities (OHID) data. Users should consider these factors when interpreting the results.

External references

Click here to explore more from the Birmingham and Solihull Integrated Care Partnerships Outcome Framework.

Localities Explained

This dataset contains data based on either the resident locality or registered locality of the patient, a distinction is made between resident locality and registered locality populations:

• Resident Locality refers to individuals who live within the defined geographic boundaries of the locality. These boundaries are aligned with official administrative areas such as wards and Lower Layer Super Output Areas (LSOAs).
• Registered Locality refers to individuals who are registered with GP practices that are assigned to a locality based on the Primary Care Network (PCN) they belong to. These assignments are approximate—PCNs are mapped to a locality based on the location of most of their GP surgeries. As a result, locality-registered patients may live outside the locality, sometimes even in different towns or cities.

This distinction is important because some health indicators are only available at GP practice level, without information on where patients actually reside. In such cases, data is attributed to the locality based on GP registration, not residential address.

Click here to explore more from the Birmingham and Solihull Integrated Care Partnerships Outcome Framework.