Diabetes-eye-exams - Health Quality Ontario (HQO)

INDICATOR NAME

Name

Diabetes eye exams

Alternate Name

Percentage of people aged 20 and older with diabetes who had a diabetes eye exam

INDICATOR DESCRIPTION

Description

This indicator measure the percentage of Ontarians with diabetes aged 20 and older who had an eye exam within a 2- year period. A higher percentage is better.

HQO Reporting tool/product

Public reporting

Dimension

Effective

Type

Process

DEFINITION AND SOURCE INFORMATION

Unit of Measurement

Percentage

Calculation Methods

Numerator divided by the denominator times 100

Numerator (short description i.e. not inclusions/exclusions)

Number of people with diabetes aged 20 and older (for that specific fiscal year) with a record for eye exam within a 2-year period

Denominator (short description i.e. not inclusions/exclusions)

Total number of people with diabetes aged 20 and older in the fiscal year of interest.

Adjustment (risk, age/sex standardization)- generalized

Age and sex standardized

Data Source

Ontario Diabetes Database (ODD), Ontario Health Insurance Plan (OHIP) Claims History Database

Data provided to HQO by

Institute for Clinical Evaluative Sciences (ICES)

Reported Levels of comparability /stratifications (defined)

Age, Income, Region, Rurality, Sex, Time

OTHER RELEVANT INFORMATION

Caveats and Limitations

-ODD doesn’t distinguish type1 and type 2 diabetes -The ODD is re-created yearly using updated OHIP, CIHI/SDS, and RPDB data. -It is not possible to identify the details/type of the screening using the admin database, instead it was attempted to select all possible opportunities for retinal screening. -The indicator does not specify patients with diabetes that have been already diagnosed with retinopathy. -According to guidelines the appropriate eye exam monitoring intervals are established based on severity of disease.

Comments Summary

For this indicator the most recent year’s denominator (diabetes population) is used as a standard population, as the age and sex distribution of the diabetes population is very different from the 2011 Canadian Census population, which is used as standard for other indicators in the report.