Description of selected observational studies on HZ incidence in populations with a widespread chickenpox vaccination program.

HMO health maintenance organization; HZ herpes zoster; CP chickenpox; RR relative risk; PY person-years; MMDS Melbourne Medical Deputising Service; ER emergency room.§Descriptions of vaccination uptake are as reported in the respective original papers.*H = High: the quality of methods used in this paper permits the results, within the scope of the study design, to be interpreted with at the most a few remarks. M = Medium: the quality of methods used in this paper permits the results, within the scope of the study design, to be interpreted, but with some caution. L = Low: the quality of methods used in this paper urges the reader to interpret the results, even within the scope of the study design, with sufficient caution.£See Table S2.**The ‘B’ statement expresses whether the study supported the existence of exogenous boosting (‘+) or not (‘−’).健康维护组织（Health Maintenance Organization, HMO）、带状疱疹（Herpes Zoster, HZ）、水痘（Chickenpox, CP）、相对风险（Relative Risk, RR）、人年（Person-Years, PY）、墨尔本医疗代理服务（Melbourne Medical Deputising Service, MMDS）及急诊室（Emergency Room, ER）。§疫苗接种率的相关描述均引自各对应原始研究的报道。*H=高：本文所采用的方法学质量可确保在研究设计框架内对研究结果进行解读，仅需辅以少量补充说明即可。M=中：本文所采用的方法学质量可确保在研究设计框架内对研究结果进行解读，但需保持一定审慎态度。L=低：本文所采用的方法学质量要求读者即便在研究设计框架内解读研究结果时，也需保持充分的审慎态度。£详见补充表S2。**“B”项用于表明该研究是否支持外源性增强（exogenous boosting）效应的存在，支持则标注“+”，不支持则标注“−”。