cond_true is a frequency that describes the
number of individuals in the current population
for which the condition is
TRUE (i.e., actually true cases).
An object of class
numeric of length 1.
The frequency of
cond_true individuals depends on the population size
the condition's prevalence
prev and is split further into two subsets of
hi by the sensitivity
mi by the miss rate
to other frequencies:
In a population of size
N the following relationships hold:
Consult Wikipedia: Confusion matrix for additional information.
is_freq verifies frequencies;
num contains basic numeric parameters;
init_num initializes basic numeric parameters;
freq contains current frequency information;
comp_freq computes current frequency information;
prob contains current probability information;
comp_prob computes current probability information.