2 oranges and 1 lemon daily Today: 4 June 201
Today: 4 June 2014 2 oranges and 1 lemon daily
AA half-pint of sea water daily (comparison group)C Today: 4 June 201
Today: 4 June 2014 half-pint of sea water daily (comparison group)
RESULTS OF THE EXPERIMENT THE MOST SUDDEN AND VISIBLE GOOD EFFECTS WERE PERCEIVED FROM THE USE OF THE ORANGES AND LEMONS: ONE OF THOSE WHO HAD TAKEN THEM BEING AT THE END OF SIX DAYS FIT FOR DUTY.THE OTHER WAS THE BEST RECOVERED OF ANY IN HIS CONDITION, AND BEING NOW DEEMED PRETTY WELL WAS APPOINTED NURSE TO THE REST OF THE SICK JAMES LIND, 1753 Today: 4 June 201
Today: 4 June 2014 RESULTS OF THE EXPERIMENT “…THE MOST SUDDEN AND VISIBLE GOOD EFFECTS WERE PERCEIVED FROM THE USE OF THE ORANGES AND LEMONS; ONE OF THOSE WHO HAD TAKEN THEM BEING AT THE END OF SIX DAYS FIT FOR DUTY….THE OTHER WAS THE BEST RECOVERED OF ANY IN HIS CONDITION, AND BEING NOW DEEMED PRETTY WELL WAS APPOINTED NURSE TO THE REST OF THE SICK...” - JAMES LIND, 1753
·1919 TOPLEY实验流行病学 ·1938PAUL临床流行病学 Today: 4 June 201
Today: 4 June 2014 • 1919 TOPLEY 实验流行病学 • 1938 PAUL 临床流行病学
定义 ·流行病学实验( EPIDEMIOL0 GICAL EXPERIMENT)研究,也即实 验流行病学( EXPERIMENTAL EPIDEMIOL0GY),是将满足实验目的 的人群随机地分为实验组和对照组(或不同水平试验组),由 研究者有控制地给予实验组人群实验措施或称干预措施,随访 并比较两组(或多组)人群的疾病或健康结局,从而判断该措 施是否有效及效果大小 Today: 4 June 201
Today: 4 June 2014 定义 • 流行病学实验（EPIDEMIOLOGICAL EXPERIMENT）研究，也即实 验流行病学(EXPERIMENTAL EPIDEMIOLOGY)，是将满足实验目的 的人群随机地分为实验组和对照组（或不同水平试验组），由 研究者有控制地给予实验组人群实验措施或称干预措施，随访 并比较两组（或多组）人群的疾病或健康结局，从而判断该措 施是否有效及效果大小