. Author manuscript; available in PMC: 2015 Aug 1.

Published in final edited form as: JPEN J Parenter Enteral Nutr. 2014 Mar 10;39(6):738–742. doi: 10.1177/0148607114526242

Table 2.

Table 3. Bias of QuarkRMR^® relative to Deltatrac^® and within multiple measurements with Deltatrac^® (95% confidence intervals of the differences that exclude zero indicate bias).

	QuarkRMR^® - Deltatrac^®		Deltatrac^® 2 – Deltatrac^® 1^a
	95% confidence interval		95% confidence interval
Parameter	(actual value)	(as percentage of Deltatrac^®)	(actual value)	(as percentage of Deltatrac^® 1)
VO₂ (mL/min)^b	−4.6 to 2.6	−1.8 to 1.0	−6.8 to 0.8	−2.7 to 0.3
VCO₂ (mL/min)^b	−1.7 to 5.7	−0.8 to 2.7	−6.1 to 7.3	−2.9 to 3.8
RMR (kcal/day)^b	−27 to 22	−1.5 to 1.2	−43 to 10	−2.5 to 0.6
RQ^b	−0.0005 to 0.0233	−1.8 to 1.0	−0.15 to 0.04	−1.7 to 4.6

Deltatrac^® 2 = the second Deltatrac^® measurement in Phase 1 and 3 when the Deltatrac^® was used twice in the same measurement session. Deltatrac^® 1 was the first measurement of the pair.

VO₂ oxygen consumption, VCO₂ carbon dioxide production, RMR resting metabolic rate, RQ respiratory quotient