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Table 1 Characteristics of participants from the primary and nested surveys, Amhara region, Ethiopia, 2011–2015

From: Prevalence of soil-transmitted helminths and Schistosoma mansoni among a population-based sample of school-age children in Amhara region, Ethiopia

Characteristic Trachoma impact surveys Nested surveys
n % n %
Age, years
6 8551 10.3 1584 10.3
7 11,062 13.3 2185 14.1
8 9873 11.8 2018 13.1
9 10,834 13.0 1619 10.5
10 8695 10.4 1845 11.9
11 4960 5.9 1056 6.8
12 9464 11.4 1815 11.7
13 6993 8.4 1353 8.8
14 6069 7.3 1020 6.6
15 6798 8.2 960 6.2
Female 41,417 50.1 8041 52.1
Attends school 43,623 68.5 11,479 75.1