Table 1.

Results from the linear mixed‐effects models for estimation of coefficients of variation (CV, %) of biological and analytical variation, including 95% confidence intervals (CIs)

	Based on the model for nontransformed tryptase	Based on the model for log‐transformed tryptase
	Estimate	CI, simulated tryptase	CI, simulated log tryptase	Estimate	CI, simulated log tryptase	CI, simulated tryptase
Between‐subject CV, %	31.5	18.8–45.4	20.9–50.6	35.2	21.5–49.8	19.5–81.2
Within‐subject CV, %	5.6	4.1–7.4	3.8–7.4	5.4	3.9–6.6	4.3–15.4
Analytical CV, %	6.3	5.2–7.8	5.9–8.2	6.6	5.8–7.4	5.7–17.3
RCV, %	23.5	19.5–28.8	22.0–28.4	–	–	–
RCV, %, down	–	–	–	−21.0	−22.9 to −19.2	−47.6 to −19.4
RCV, %, up	–	–	–	26.6	23.8–29.6	24.1–90.7

Abbreviation: RCV, reference change value.