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

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

Events	N	Calf- days at risk	Calf-months at risk	Incidence Rate (IR)
Events	N	Calf- days at risk	Calf-months at risk	True rate	Risk rate (%)^a
Diarrhea	86	38,023	211	0.408	33.5
Coccidiosis	42	33,611	187	0.225	20.1

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

ISSN: 2046-0481