FIG 4.
Reproducibility determined by linear regression. Interassay agreement of IgG unit values obtained from repeat testing of coccidioidomycosis patient samples (n = 51) demonstrated a strong correlation, with a R2 of 0.984 (slope 95% CI, 1.00 to 1.12 [P < 0.0001]). Interassay agreement of IgM unit values obtained from repeat testing of coccidioidomycosis patient samples demonstrated a strong correlation, with a R2 of 0.993 (slope 95% CI, 0.985 to 1.02 [P < 0.0001]).