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Table 1 Incidence (true rate and risk rate) of diarrhea and coccidiosis in Bahir Dar dairy farms

From: Epidemiological study on calf diarrhea and coccidiosis in dairy farms in Bahir Dar, North West Ethiopia

Events

N

Calf- days at risk

Calf-months at risk

Incidence Rate (IR)

True rate

Risk rate (%)a

Diarrhea

86

38,023

211

0.408

33.5

Coccidiosis

42

33,611

187

0.225

20.1

  1. aRisk rates estimated from true rates derived by the formula, Risk rate = 1- e-true rate [36]