Table 1.

Average biases and errors [95% confidence intervals (CIs)] for different sampling paradigms based on Altman-Bland analysis

	Mean ratio	Low (95% CI)	High (95% CI)
0800-h single	1.31	0.36	4.84
2-h mean	1.27	0.53	3.07
5-h mean	1.14	0.69	1.89
9-h mean	1.11	0.77	1.69

Average biases and errors (95% confidence intervals) for different sampling paradigms (Fig. 6).