Cutts F T
Save the Children Fund Epidemiologist, E.P.I., Ministry of Health, Mozambique.
J Trop Med Hyg. 1988 Oct;91(5):231-9.
A study was performed in Quelimane City, Mozambique, using the WHO EPI cluster sampling methodology to assess its applicability for evaluating the impact of the programme on target disease incidence rates in urban areas. Though the methodology was straightforward to use, difficulties were experienced in the retrospective diagnosis of the target diseases, which were felt to limit the reliability of the data obtained. Though results of measles incidence and mortality rates were useful to compare with routine data and discuss with local health staff, the variation in measles incidence rates between epidemic and non-epidemic years may make repeated surveys of this type inappropriate for evaluating programme impact, as it would be difficult to attribute any reduction found in one particular year to immunization and not to the variation in disease incidence which is known to occur in the absence of vaccination. It is suggested that resources would be more profitably used in establishing sentinel sites and improving the quality and utilization of routine data than in conducting repeated sample surveys.
在莫桑比克的克利马内市开展了一项研究，采用世界卫生组织扩大免疫规划（EPI）整群抽样方法来评估其在评估该规划对城市地区目标疾病发病率的影响方面的适用性。尽管该方法易于使用，但在目标疾病的回顾性诊断中遇到了困难，这被认为限制了所获数据的可靠性。虽然麻疹发病率和死亡率的结果对于与常规数据进行比较以及与当地卫生工作人员进行讨论很有用，但流行年份和非流行年份之间麻疹发病率的差异可能使得此类重复调查不适用于评估规划影响，因为很难将某一特定年份中发现的任何降低归因于免疫接种，而不是归因于在未接种疫苗情况下已知会出现的疾病发病率变化。建议将资源更有效地用于建立哨点以及提高常规数据的质量和利用率，而不是进行重复抽样调查。
