Table 1. Comparison of single measure intraclass correlations (ICC) in a two-way mixed-effects model for consistency of agreement using different combinations of imaging devices and image analysis tools (method A, B, C) for the same set of LFA strips.

For each method, the ICC is followed by the 95 percent confidence interval enclosed in brackets.

Method	Camera	Image Analysis	Test Line (TL) ICC	Relative Signal (T/C) ICC
A (n = 21)	FluorChem Platform	ImageJ	0.96 (0.92–0.98)	0.97 (0.93–0.99)
B (n = 21)	iPhone camera	ImageJ	0.91 (0.82–0.96)	0.95 (0.91–0.98)
C (n = 18)	iPhone camera	iPhone app	0.80 (0.62–0.91)	0.82 (0.65–0.92)