OptionalciInterval of the two limits of agreement: "package" (the default), BlandAltmanLeh's limit ± t sqrt(3 s²/n) with
t quantiles on n - 1 degrees of freedom (Bland and Altman 1986's approximation), or "exact", the exact interval
from the noncentral t distribution (Carkeet 2015), wider for small n. Unambiguous abbreviations are accepted.
OptionalconfLevel of the confidence intervals, in [0, 1] (two-sided). Default 0.95.
Optionalmode1 for the differences x - y (the default), 2 for y - x.
OptionaltwoThe multiple of the standard deviation of the differences in the limits of agreement, positive. Default 1.96.
Options for blandAltman.