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Table 1 Characteristics of the cohort population examined from 2005 to 2009

From: Spatial-temporal variations of Schistosoma japonicum distribution after an integrated national control strategy: a cohort in a marshland area of China

Year Number of households Mean of households per natural village Number of population examined Mean of population per natural village Mean of residents per household Mean age (year)
2005 275 22.9 654 55 2.38 37.4
(16-35) (33-85) (6.7-65.0)
[36.2-38.6]
2006 277 23.1 652 54 2.35 38.2
(16-35) (33-84) (7.7-64.5)
[37.1-39.4]
2007 275 22.9 649 54 2.36 40.2
(16-35) (33-83) (9.7-65.0)
[39.0-41.4]
2008 261 21.8 575 48 2.20 41.2
(12-32) (25-85) (7.3-65.0)
[39.9-42.4]
2009 268 22.3 684 57 2.55 38.2
(13-35) (27-85) (5.9-65.0)
[36.9-39.4]
  1. The range min-max values in parentheses (), 95% CI in square bracket [].