![]() We noted significant increases in use of aspirin within 24 h (79♷% in 2001 vs 91♲% in 2011, ptrend<0♰001) and clopidogrel (1♵% in 2001 vs 82♱% in 2011, ptrend<0♰001) in patients without documented contraindications. Between 20, estimated national rates of hospital admission for STEMI per 100,000 people increased (from 3♵ in 2001, to 7♹ in 2006, to 15♴ in 2011 ptrend<0♰001) and the prevalence of risk factors-including smoking, hypertension, diabetes, and dyslipidaemia-increased. 12,264 patients were included in analysis of treatments, procedures, and tests, and 11,986 were included in analysis of in-hospital outcomes. We sampled 175 hospitals (162 participated in the study) and 18,631 acute myocardial infarction admissions, of which 13,815 were STEMI admissions. ![]() This study is registered with, number NCT01624883. We weighted our findings to estimate nationally representative rates and assess changes from 2001 to 2011. In the second stage we obtained case data for rates of STEMI, treatments, and baseline characteristics from patients attending each sampled hospital with a systematic sampling approach. In the first stage, we used a simple random-sampling procedure stratified by economic-geographical region to generate a list of participating hospitals. In a retrospective analysis of hospital records, we used a two-stage random sampling design to create a nationally representative sample of patients in China admitted to hospital for STEMI in 3 years (2001, 2006, and 2011). We aimed to assess trends in characteristics, treatment, and outcomes for patients with STEMI in China between 20. Despite the importance of ST-segment elevation myocardial infarction (STEMI) in China, no nationally representative studies have characterised the clinical profiles, management, and outcomes of this cardiac event during the past decade.
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