Objective To study the value of HEART scores in predicting the risk of getting acute coronary syndrome in patients with chest pain and assessing the prognosis in order to elucidate the validity of the HEART scores.Methods A total of 1 200 patients with chest pain were continuously observed and followed up,and their HEART scores were calculated.The survival rates were calculated with Kaplan-Meier method and AUROC (area under ROC curve) was used to determine the accuracy of this methods.The HEART scores were compared with TIMI and GRACE scores.Results Low HEART scores (0-3) were found in 34.5％ of the patients and MACE (major adverse cardiac event) occurred in 1.4％ of them.The patients with intermediate HEART scores (4-6) accounted for 50.7％ patients,and MACE was diagnosed in 22.2％ of them.High HEART scores (7-10) were found in 14.85％ patients,and MACE occurred in 60.7％ of them.There was significant difference among these three groups (Log rank P ＜ 0.01).The AUROC of HEART score was 0.83 (95％ CI:0.80-0.85,P ＜0.01),being significantly higher than the GRACE scores (0.76) and TIMI scores (0.72).Conclusions The HEART score is applicable for predicting the risk of getting acute coronary syndrome of chest pain patients in emergency department and the prognosis.

OBJECTIVETo Study the temporal patterns of stroke onset, and to provide insights into the triggers which might cause the acute onset of stroke and to develop preventive strategies.

METHODSUsing a 10-year period of the SINO-MONICA-Beijing study cohort a total number of 700 000 people, aged 25 to 74 years was recruited. The diagnostic criteria exactly followed the WHO MONICA project. Date of the week, season and month occurrence of stroke were ascertained. Percentage of stroke onset on date in the week, season and month were calculated. chi(2) test was used to identify the deviation from expected frequencies. Multiple stepwise regression was carried out for multivariate analysis.

RESULTSMost stroke occurred and recurred (chi(2) = 7.02, P = 0.008 in male and chi(2) = 12.32, P = 0.000 4 in female) in winter. The most frequent occurrence on the dates of stroke events were Monday in the urbans and Saturday in the rurals. The finding were confirmed (the stroke occurrence and recurrence positively correlated with season, correlation coefficient 0.032, P = 0.01) by correlation and multiple stepwise regression.

CONCLUSIONIt was important to find out the circadian variation and the external triggering factors together with unhealthy behaviour of life that would contribute to the prevention and reduction of stroke onset.

Adult ; Aged ; China ; epidemiology ; Cohort Studies ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Seasons ; Stroke ; epidemiology