Does Screening of Coronary Artery Disease an Efficient Public Health Strategy in Patients With Type 2 DIABetes

Inclusion Criteria: * age greater than or equal to 40 years (on 2015/01/01), * T2DM (ALD or hospitalization for T2DM or at least 3 deliveries of at least one oral or injectable anti-diabetic drug over a year (or 2 deliveries in the event of quarterly conditioning) without ALD or hospitalization for type 1 diabetes, secondary diabetes or diabetes gestational), * Duration of diabetes greater than or equal to 7 years (the data available in the SNDS do not allow for an inclusion criterion of duration of diabetes\> 7 years) (identified in 2008), * Patients with regular follow-up by a doctor (GP, cardiologist, endocrinologist) defined as having at least one contact per year (during the pre-selection period), * Affiliated with the general health insurance scheme, * With at least 2 cardiovascular risk factors: obesity (hospitalization for obesity or at least 3 deliveries of an anti-obesity drug over one year), high blood pressure (hospitalization for high blood pressure or at least 3 deliveries of at least one antihypertensive medication over one year), hypercholesterolemia (at least 3 prescriptions for statin and / or ezetimibe), or chronic obstructive pulmonary disease (used as an indicator of chronic tobacco poisoning; ALD or hospitalization for chronic obstructive pulmonary disease), * And presenting at least one of the following organ damage (during the pre-selection period): a) Carotid stenosis (hospitalization for carotid stenosis or act of carotid revascularization); b) AIT (ALD or hospitalization for AIT); c) Stroke (ALD or hospitalization for stroke); d) Arteriopathy obliterating of the lower limbs (ALD or hospitalization for arteriopathy obliterating of the lower limbs); e) Chronic renal disease (ALD or hospitalization for diabetic nephropathy, chronic renal failure or recourse to a technique of replacement or renal transplantation); f) Severe diabetic retinopathy treated by laser photocoagulation (ALD or hospitalization for diabetic retinopathy associated with an act of laser photocoagulation); g) Peripheral or autonomic diabetic neuropathy (ALD or hospitalization for diabetic peripheral or autonomic neuropathy), * Alive on 2015/01/01. Exclusion Criteria: * Gestational diabetes, * Secondary diabetes, * Presence of ischemic heart disease (history or current disease): acute coronary syndrome, angina pectoris, unstable angina, or coronary revascularization, * Visit to an emergency department for chest pain followed by admission to an intensive care unit for cardiology, * Patients who have undergone one or more systematic screening examinations during the pre-selection phase.