title: Risk factors of acute myocardial infarction in middle-aged and adolescent people (< 45 years) in Yantai.
abstract: BACKGROUND
  Yantai is a developed medium-sized coastal city in Eastern China, having a population of 1.6845 million. With the development of economy, some middle-aged and adolescent people (< 45 years) devote themselves to work and suffer from greater stress, which makes them ignore their own health. Moreover, they have unhealthy lifestyles and lack the knowledge of cardiovascular risk factors.
  
  
  OBJECTIVE
  To identify the risk factors for first acute myocardial infarction in middle-aged and adolescent people in Yantai, a developed medium-sized coastal city in Eastern China.
  
  
  METHODS
  A total of 154 consecutive patients with first acute myocardial infarction (< 45 years), were enrolled in case group, and 462 patients without myocardial infarction were enrolled in control group. Three controls with the same sex and age were matched to each case. The risk factors were identified with univariate and multivariate analysis.
  
  
  RESULTS
  Unhealthy food habit (eating seafood and meanwhile drinking beer), hypertension, current smokers, self-perceived stress, diabetes mellitus, obesity, sleep insufficience, hypercholesterolaemia and fatigue were independent risk factors for first acute myocardial infarction (P < 0.05).
  
  
  CONCLUSIONS
  Besides those recognized risk factors for cardiovascular disease (hypertension, hypercholesterolemia, diabetes mellitus and smoking), eating seafood and meanwhile drinking beer, self-perceived stress, sleep insufficience, obesity and fatigue were also the risk factors for first acute myocardial infarction in middle-aged and adolescent people in Yantai.
authors.affiliation: Cardiology Ward, the Yantai Yuhuangding Hospital, No. 20, Yuhuangding Eastern Road, Yantai, 264000, Shandong Province, China. 2997989328@qq.com.
authors.forename: Hong
authors.initials: H
authors.lastname: Du
authors.affiliation: Chinese and Western Medicine Ward, the Yantai Yuhuangding Hospital, No. 20, Yuhuangding Eastern Road, Yantai, 264000, Shandong Province, China. dongchangyan666@126.com.
authors.forename: Chang-Yan
authors.initials: CY
authors.lastname: Dong
authors.affiliation: Cardiology in Intensive Care Unit, the Yantai Yuhuangding Hospital, No. 20, Yuhuangding Road, Yantai, 264000, Shandong Province, China. 1652358053@qq.com.
authors.forename: Qiao-Yan
authors.initials: QY
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking / Q000009:adverse effects; D001515:Beer; D002681:China / Q000453:epidemiology; D048909:Diabetes Complications; D005221:Fatigue / Q000150:complications; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D006937:Hypercholesterolemia / Q000150:complications; D006973:Hypertension / Q000150:complications; D008297:Male; D009203:Myocardial Infarction / Q000453:epidemiology*; D009765:Obesity / Q000150:complications; D012307:Risk Factors; D017747:Seafood / Q000009:adverse effects; D013315:Stress, Psychological / Q000150:complications