Person-Time Rate and 95% Confidence Intervals

Per 100 Person-Time Units

Number of cases:66
Person-Time:2098


Lower CLRateUpper CL

Normal approximation2.3873.1463.905
Byar approx. Poisson2.4334.002
Rothman/Greenland2.4724.004

 
"Normal approximation" to the Poisson distribution as described by Rosner, Fundamentals of Biostatistics (5th Ed)
"Byar approximation to the Poisson" as described in Rothman and Boice, Epidemiologic Analysis with a Programmable Calculator
"Rothman/Greenland" as described in Rothman and Greenland, Modern Epidemiology (2nd Ed)
Note The Rothman/Greenland results have not been validated against other sources.

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