TABLE 3

Interobserver Reproducibility Using ICCs

	Pretreatment scan			Posttreatment scan			Percentage decline between pre- and posttreatment scans
Parameter	ICC	95% CI	Precision^*	ICC	95% CI	Precision^*	ICC	95% CI	Precision^*
SUV_bw max	0.93	0.90−0.96	±3%	0.91	0.86−0.94	±4%	0.94	0.90−0.96	±3%
Longest CT size (RECIST)	0.72	0.61−0.82	±11%	0.85	0.77−0.91	±7%	0.70	0.57−0.81	±12%
Two-dimensional CT size (WHO)	0.61	0.48−0.74	±13%	0.45	0.30−0.61	±16%	0.33	0.18−0.50	±16%

↵* Precision of ICC estimate is defined as one-half length of 95% CI (expressed as percentage) and is measure of reproducibility of ICC estimate.
WHO = World Health Organization.