Table 1. Intrarater and interrater reliability for grayscale histogram analysis.
Photoshop | ImageJ | ||||||
---|---|---|---|---|---|---|---|
ICC (95% CI)a | SEM | ICC (95% CI)a | SEM | ||||
Examiner 1b | Rectangular Marquee Tool | 28.09 ± 11.51 | .993 (.982) | .96 | 27.72 ± 11.45 | .996 (.990) | .72 |
Free Hand Tool | 27.52 ± 11.77 | .992 (.978) | 1.05 | 26.55 ± 11.38 | .995 (.986) | .80 | |
Examiner 2b | Rectangular Marquee Tool | 28.19 ± 11.64 | .993 (.982) | .97 | 27.69 ± 11.39 | .996 (.990) | .72 |
Free Hand Tool | 27.35 ± 11.68 | .992 (.978) | 1.04 | 27.01 ± 11.63 | .995 (.986) | .82 | |
Both examinersc | Rectangular Marquee Tool | 28.15 ± 11.57 | .993 (.982) | .97 | 27.71 ± 11.42 | .996 (.990) | .72 |
Free Hand Tool | 27.44 ± 11.72 | .992 (.978) | 1.05 | 26.78 ± 11.51 | .995 (.986) | .81 |
Notes.
one-sided lower limit (CI = confidence interval).
ICC3,k used to determine intrarater reliability.
ICC2,k used to determine interrater reliability.
p < .001 for all ICC values.
(SEM, standard error of the measurement).