The association between night soil use and <i>S. japonicum</i> infection in 36 villages in Sichuan, China, 2007 and 2010.

Abstract

<p><sup>a</sup>Odds ratios and 95% CIs were estimated using a multi-level fixed-effect logistic regression model. All models accounted for unmeasured within-village correlation.</p><p><sup>b</sup>Adjusted for age (categorized in 10-year increments), sex and county of residence.</p><p><sup>c</sup>Adjusted for all variables in Adjustment A as well as whether anyone in the household owned bovines, village bovine density (the mean number of bovines per household), household and village SES, the area cultivated by household members in the past year and village agricultural intensity (the mean area cultivated per household in the past year).</p><p><sup>d</sup>Village-level night soil use describes the mean buckets of night soil applied per household in the village, calculated excluding the index household. It is categorized by quartiles: very low (0–19 buckets), low (20–33 buckets), medium (34–68 buckets) and high (69–245 buckets).</p><p><sup>e</sup>Tests for trend were conducted by modeling the categorical variable as ordinal.</p><p>The association between night soil use and <i>S. japonicum</i> infection in 36 villages in Sichuan, China, 2007 and 2010.</p

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