Assigns neutropenia grade based on the National Cancer Institute system. Note that while this system assigns a grade of 1 to an ANC between 1500-2000, the term neutropenia is usually reserved for a grade of 2 or higher (an ANC of <1500)
References
Neutropenia: US National Cancer Institute's Common Toxicity Criteria
Examples
calc_neutropenia_grade(
anc = c(500, 1501)
)
#> [1] 3 1