The percentage of patients with a total cholesterol reading greater than 7.5 mmol/litre when aged 29 years or under, or greater than 9.0 mmol/litre when aged 30 years or over, who have been: diagnosed with secondary hyperlipidaemia, or clinically assessed for familial hypercholesterolaemia, or referred for assessment for familial hypercholesterolaemia, or genetically diagnosed with familial hypercholesterolaemia.