Table 1. Values and statistical tests for inter-field strength comparison and repeatability cohort.

Interfield Comparison	Values (95% CI)
Mean bias	0.48 (0.19–0.77) % VLFF
95% limits of agreement	-2.2 to 3.2% VLFF
ICC for absolute agreement	0.983 (0.972–0.989)
Repeatability Cohort	Values
Repeatability Coefficient	4.2 (2.8–5.6) % VLFF
ICC for absolute agreement	0.971 (0.921–0.989)