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Table 3 Joinpoint analysis for malaria incidence trends in Jiangsu province

From: Mass drug administration for the control and elimination of Plasmodium vivax malaria: an ecological study from Jiangsu province, China

MDA 1973−1983 Segments Annual per cent change (95% CI)
Province−wide 1973–1976* −56.7 (−75.5 to −23.7)
1976–1983 −12.4 (−24.7 to 2.0)
Prefectures   
  Changzhou 1973–1983* −33.8 (−36.7 to −30.8)
  Huaiyin 1973–1983* −19.9 (−33.0 to −4.2)
  Lianyungang 1973–1983* −24.3 (−38.2 to −7.3)
  Nanjing 1973–1978 9.5 (−35.2 to 85.1)
1978–1983* −19.7 (−28.6 to −9.7)
  Nantong 1973–1977* −65.5 (−75.8 to −50.9)
1977–1983 −6.1 (−22.3 to 13.5)
  Suzhou 1973–1976 −8.6 (−40.2 to 39.8)
1976–1983* −35.7 (−42.6 to −28.0)
  Wuxi 1973–1983* −40.2 (−43.1 to −37.2)
  Xuzhou 1973–1983* −24.2 (−38.8 to −11.9)
  Yancheng 1973–1976* −71.6 (−84.1 to −49.3)
1976–1983* −18.6 (−30.2 to −4.8)
  Yangzhou 1973–1976* −67.6 (−82.2 to −41.1)
1976–1983 −1.4 (−15.9 to 15.8)
  Zhenjiang 1973–1977* −44.2 (−56.2 to −28.9)
1977–1983* −28.1 (−36.8 to −18.1)
Focal MDA 2000−2009
County   
  Sihong 2000–2009* −27.0 (−35.6 to −17.2)
  Xuyi 2000–2002* −43.7 (−65.7 to −7.8)
  2002–2009* −14.0 (−24.8 to −1.7)
  1. *statistically significant.