Froom J
J Fam Pract. 1977 Apr;4(4):631-3.
Blood lead level tests, by the finger-prick micromethod, were given to 333 children in a primary care practice. On initial testing, 18.6 percent of children had lead levels between 30 and 39 microng/100 ml and ten percent had lead levels of 40 microng/100 ml or greater. In the latter group, only 2.7 percent had levels in that range when retested with venous blood samples. Socioeconomic status, as determined by census tract residence, correlated with evidence of undue lead absorption. Of the children tested from socioeconomic Group I (I is highest), 3.4 percent were affected, as opposed to 60.0 percent of the children residing in Group V census tracts.
采用手指针刺微量法，对一家初级保健机构的333名儿童进行了血铅水平检测。初次检测时，18.6%的儿童血铅水平在30至39微克/100毫升之间，10%的儿童血铅水平为40微克/100毫升或更高。在后一组中，用静脉血样本重新检测时，只有2.7%的儿童血铅水平在该范围内。根据普查区居住情况确定的社会经济地位与铅吸收过多的证据相关。在社会经济第一组（I组为最高）接受检测的儿童中，3.4%受到影响，而居住在第五组普查区的儿童中这一比例为60.0%。
