Hinds M W, Skaggs J W, Bergeisen G H
Am J Public Health. 1985 Feb;75(2):176-7. doi: 10.2105/ajph.75.2.176.
We identified two random samples of 216 primary care physicians each. In one sample, we made weekly telephone contact for active hepatitis A (HA) surveillance; in the other, we made no such contact (passive surveillance). Appropriate county health departments were notified whenever we identified a HA case by active surveillance. Active surveillance was associated with a 2.8-fold increase in reported HA cases compared to passive surveillance. The estimated benefit: cost ratio active/passive surveillance was 2.5:1.
我们识别出了两个各有216名初级保健医生的随机样本。在其中一个样本中，我们每周进行电话联系以开展甲型肝炎（HA）主动监测；在另一个样本中，我们不进行此类联系（被动监测）。每当我们通过主动监测识别出HA病例时，都会通知相应的县卫生部门。与被动监测相比，主动监测使报告的HA病例增加了2.8倍。主动监测与被动监测的估计效益成本比为2.5:1。
