Measures of disease frequency - Caribvet

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Incidence vs Prevalence Incidence = 6/N Prevalence = 8/N Disease duration Observation period
Crude and specific rates • Crude incidence rate • Total number of cases and population time at risk • Ignore the influence of host factors or management • Specific incidence rate • Frequency of disease for specific sub/populations (age specific, sex specific, etc.)
Page 1 and 2: Measures of Disease Frequency
Page 3 and 4: Ratios, Proportions, Rates • Rati
Page 5 and 6: Ratio Example • Feed conversion r
Page 7 and 8: Proportion of males in a flock is 3
Page 9 and 10: Ratios, Proportions, Rates • Rate
Page 11 and 12: Prevalence • Describes what propo
Page 13 and 14: Prevalence Concerns when using this
Page 15 and 16: Incidence (cumulative incidence rat
Page 17 and 18: Incidence Rate • Example: 180 cal
Page 19: Incidence Concerns when using this
Page 23 and 24: Other measures of disease • Case
Page 25 and 26: Epidemic Curves • Plot the freque
Page 27 and 28: 200 150 100 50 0 Vesicular Stomatit
Page 29 and 30: Temporal Pattern of 2003/4 and 2004
Page 31: Measures of Disease The measures us

Measures of disease frequency - Caribvet

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