Parasite mean infection intensities and infection intensity categories and association of infection intensity with sex and age group.

Parasite infection intensities stem from a national survey conducted in Côte d'Ivoire between November 2011 and February 2012. Children from 92 different survey locations were parasitologically tested. Infection intensity defined as the number of eggs per 1 g of stool (EPG) in the case of helminths infections and the number of parasites per μl of blood in the case of Plasmodium. Helminth infection intensity categories were defined according to World Health Organization guidelines [23] whereas cut-offs for Plasmodium parasitemia were applied according to previous studies conducted in the country [24]; both are reported as percentage of all positive cases of the respective parasite infection. Associations were assessed by negative binomial regression models on parasite counts, accounting for cluster effects at school unit. Statistically significant (p<0.05) IRR are highlighted in bold.
N = number of children.
IRR =  incidence rate ratio.
CI = confidence interval.

本数据集的寄生虫感染强度数据来源于2011年11月至2012年2月在科特迪瓦开展的一项全国性调查。来自92个不同调查点的儿童接受了寄生虫学检测。感染强度定义为：蠕虫感染时为每克粪便中的虫卵数（EPG），疟原虫（Plasmodium）感染时为每微升血液中的寄生虫数量。蠕虫感染强度的分级标准参照世界卫生组织（World Health Organization, WHO）指南[23]制定，而疟原虫虫血症的截断值则参照该国既往开展的相关研究[24]确定；两类指标均以对应寄生虫感染阳性病例的占比形式报告。采用负二项回归模型对寄生虫计数进行关联分析，并校正学校层面的集群效应。具有统计学意义（p<0.05）的发病率比（incidence rate ratio, IRR）以加粗字体标注。
N=受试儿童总数。
IRR=发病率比（incidence rate ratio）。
CI=置信区间（confidence interval）。