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在巴西社区的一个BCG效果评价试验的横断面调查中,培训过的人员检查儿童的上臂,同时从监护人的来信及儿童接种卡上获得信息。随后护士再对样本进行双盲抽查。两组卡痕阅读有高度的一致性(Kappa=0.839)。以监护人和卡片记录的信息作为金标准获得高敏感性和低特异性。当监护人与接种卡片一致时敏感性仍然高,而当两者不一致时,敏感性仍然高,而特异性非常低。(BCG)卡痕是已接种BCG的好指标。
In a cross-sectional survey of a BCG-effectiveness evaluation trial in a Brazilian community, trained staff examined the upper arm of a child and obtained information from both the guardian’s letter and the child’s vaccination card. The nurse then double-blind spot checks on the sample. There was a high degree of agreement between the two sets of card readings (Kappa = 0.839). The information recorded by guardians and cards is the gold standard for high sensitivity and low specificity. Sensitivity is still high when the guardian is consistent with the vaccination card, and when the two are inconsistent, the sensitivity is still high and the specificity is very low. (BCG) Markers are a good indicator of BCG vaccination.