This calculator helps you determine the survival rate of a group over a specific period. Survival rate is a critical metric in various fields, including biology (e.g., animal populations, plant studies), medicine (e.g., patient recovery rates, treatment efficacy), and even project management (e.g., customer retention). It is typically expressed as a percentage.
Survival Rate:
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How to Calculate Survival Rate
The survival rate is calculated using a straightforward formula:
Survival Rate = (Number of Subjects Survived / Initial Number of Subjects) * 100
Where:
Initial Number of Subjects: This is the total number of individuals or items at the beginning of the observation period.
Number of Subjects Survived: This is the count of individuals or items that are still alive or functioning at the end of the observation period.
For example, if you started with 100 plants and 70 of them were still alive after one year, your survival rate would be (70 / 100) * 100 = 70%.
A higher survival rate generally indicates greater success or resilience, whether it's in a biological population, a medical treatment's effectiveness, or the longevity of a product.