Inter-rater reliability/MDC of the 3-aspect BI

Table 3. Inter-rater reliability indices of the 3-aspect BI (n=45)

Aspect	First test Mean (SD)	Second test Mean (SD)	Difference Mean (SD)	ICC (95% CI)	SEM	MDC
Actual Performance	16.2 (4.1)	16.7 (3.6)	-0.5 (1.8)	0.89 (0.81-0.94)	1.2	3.3
Self-perceived difficulty	15.4 (4.2)	15.4 (3.7)	0.1 (2.8)	0.76 (0.59-0.86)	1.8	4.9
Ability	15.3 (2.6)	15.7 (2.8)	-0.4 (1.5)	0.84 (0.73-0.91)	1.2	3.3

Actual performance MDC% = (3.3/20) x100 = 16.5%
Self-perceived difficulty MDC% = (4.9/20) x100 = 24.5%
Ability MDC% = (3.3/18) x100 = 18.3%