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NACC data class

Source: R/data_nacc.R
data_nacc.Rd

A short description...

Usage

data_nacc(data = NULL)

Arguments

data

A data.table containing NACC data. If the provided value is not a data.table, it will be coerced to one by the setter, which also adds VISITDATE and NACCAGE if these are not already present.

Value

An S7 object of class data_nacc. Object construction will fail if the provided data is missing required columns, has incorrect column types (NACCID must be character; either VISITYR, VISITMO, and VISITDAY as numerics, or VISITDATE as "YYYY-MM-DD"; SEX and EDUC must be numeric; BIRTHYRand BIRTHMO or NACCAGE must be present as numerics), or contains invalid values (e.g., SEX not 1/2/NA, VISITYR < 2005, VISITMO not 1-12, VISITDAY not 1-31, or an invalid date combination from year/month/day).