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Table 3 Relative risk ratios for water sources that could influence human echinococcosis

From: Epidemiological characteristics and risk factors for cystic and alveolar echinococcosis in China: an analysis of a national population-based field survey

Water source

Relative risk ratio (95% CI)

From

Compared to

Cystic echinococcosis

Alveolar echinococcosis

Tap water

Ditch

1.09 (0.91–1.31)*

1.56 (1.09–2.24)*

River

1.57 (1.42–1.74)*

2.53 (2.08–3.08)*

Ponding

1.40 (1.08–1.80)*

4.35 (2.23–8.48)*

Well

1.37 (1.23–1.52)*

1.13 (0.84–1.52)

Spring

1.57 (1.41–1.75)*

1.22 (8.59–1.72)

Pond

1.21 (0.45–3.23)

43.8 (5.75–334)*

  1. CI Confidence interval
  2. *Significantly different from zero at P < 0.05 based on the 95% CI