Enter survival rate information:

  <--- Enter population count at time (t)
  <--- Enter time x (tx)
  <--- Enter time x + n (tx + n)

Calculate the survival table

lx = Population Count that you entered at time x
dx = Mortality Population from time x to time x + 1
px = Probability of Survival from time x to time x + 1
qx = Probability of Mortality from time x to time x + 1

Agelxdx = lx - lx + 1px = lx + 1/ lxqx = 1 - px
0000.000000.00000

Calculate the Probability of Survival from time to

npx  =  lx + n
  lx

With x = and x + n = , we get:

0p  =  l
  l

0p  =  
  

0p = NAN


You have 2 free calculationss remaining




What is the Answer?
0p = NAN
How does the Survival Rates Calculator work?
Free Survival Rates Calculator - Given a set of times and survival population counts, the calculator will determine the following:
Survival Population lx
Mortality Population dx
Survival Probability px
Mortality Probability qx
In addition, the calculator will determine the probability of survival from tx to tx + n
This calculator has 2 inputs.

What 1 formula is used for the Survival Rates Calculator?

dx = lx - lx + 1
px = lx + 1/ lx
qx = 1 - px

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Survival Rates Calculator?

mortality
a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.
probability
the likelihood of an event happening. This value is always between 0 and 1.
P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes
survival
survival rates
a part of survival analysis. It is the proportion of people in a study or treatment group still alive at a given period of time after diagnosis

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