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Slight changes in Incidence Rate Ratio #7

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merged 1 commit into from Dec 30, 2020
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Slight changes in Incidence Rate Ratio #7

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2 changes: 1 addition & 1 deletion 3_Epidemiology_Analysis/a_basics/1_basic_measures.ipynb
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Expand Up @@ -278,7 +278,7 @@
"\n",
"$$\\widehat{IRR} = \\frac{\\frac{a}{T_1}}{\\frac{b}{T_0}}$$\n",
"\n",
"where $a$ is the number of individuals given ART and died, $T_1$ is the person-time contributed by individuals treated with ART, $b$ is the number of number of individuals not given ART and died, and $T_0$ is the person-time contributed by individuals treated with ART. The incidence rate ratio assumes that hazards follow an exponential distribution, meaning they are constant over time. This assumption may be more or less reasonable. If unreasonable, survival analysis methods like Kaplan-Meier, used be instead.\n",
"where $a$ is the number of individuals given ART and died, $T_1$ is the person-time contributed by individuals treated with ART, $b$ is the number of individuals not given ART and died, and $T_0$ is the person-time contributed by individuals not treated with ART. The incidence rate ratio assumes that hazards follow an exponential distribution, meaning they are constant over time. This assumption may be more or less reasonable. If unreasonable, survival analysis methods like Kaplan-Meier, used be instead.\n",
"\n",
"To calculate the incidence rate ratio, we use the following code"
]
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