| age {MESS} | R Documentation |
Compute the age in years of an individual based on the birth date and another date
age(from, to)
from |
a vector of dates (birth dates) |
to |
a vector of current dates |
For linear interpolation the auc function computes the area under the curve using the composite trapezoid rule. For area under a spline interpolation, auc uses the splinefun function in combination with the integrate to calculate a numerical integral. The auc function can handle unsorted time values, missing observations, ties for the time values, and integrating over part of the area or even outside the area.
A vector of ages (in years)
Claus Ekstrom claus@rprimer.dk
born <- c("1971-08-18", "2000-02-28", "2001-12-20")
check <- c("2016-08-28")
age(born, check)