Table 1

Definitions of the PQI according to the diagnostic code-based approach, the clinical measurement-based approach, and the reference method

Diagnostic code-based

Clinical measurement-based

Reference (hybrid) method

PQI-1

Denominator: T2DM patients with diagnostic codes for hypertension

Denominator: T2DM patients with SBP≥140 mmHg

Denominator: T2DM patients with diagnostic codes for of hypertension OR SBP≥140 mmHg

Numerator: Denominator AND prescription of any antihypertensive medication

Numerator: Denominator AND prescription of any antihypertensive medication

Numerator: Denominator AND prescription of any antihypertensive medication

PQI-2

Denominator: T2DM patients with diagnostic codes for hypertension and history of IHD or MI

Denominator: T2DM patients with SBP≥140 mmHg AND history of IHD or MI

Denominator: T2DM patients with diagnostic codes for hypertension OR SBP≥140 mmHg AND history of IHD or MI

Numerator: denominator AND prescription of beta blocker

Numerator: Denominator AND prescription of beta blocker

Numerator: Denominator AND prescription of beta blocker

PQI-3

Denominator: T2DM patients with diagnostic codes for overweight OR obesity

Denominator: T2DM patients with BMI ≥25

Denominator: T2DM patients with diagnostic codes for overweight OR obesity OR BMI≥25

Numerator: Denominator AND prescription of metformin

Numerator: denominator AND prescription of metformin

Numerator: denominator AND prescription of metformin

T2DM: Type 2 Diabetes Mellitus, IHD: Ischaemic Heart Disease, MI: myocardial infarction, SBP: Systolic Blood Pressure, BMI: Body Mass Index (weight in kilograms divided by height in meters-squared)

Martirosyan et al. BMC Health Services Research 2010 10:137   doi:10.1186/1472-6963-10-137