Table 3.

Test–retest results.

Test	Retest				Kappa coefficient (95% CI)
	Yes		No
	n	%	n	%
I1
Yes	14	87.5	2	12.5	0.826 (0.639, 0.962)
No	2	4.9	39	95.1
I2
Yes	3	60.0	2	40.0	0.562 (−0.039, 0.899)
No	2	3.8	50	96.2
I3
Yes	2	100.0	0	0.0	–
No	0	0.0	55	100.0
I4
Yes	1	100.0	0	0.0	0.486 (0.313, 1.000)
No	2	3.6	54	96.4
I5
Yes	56	98.2	1	1.8	–
No	0	0.0	0	0.0
I6
Yes	0	0.0	0	0.0	–
No	0	0.0	57	100.0
I7
Yes	10	100.0	0	0.0	0.667 (0.424, 0.872)
No	7	14.9	40	85.1

	a	b	c	d	e
I8
a	0	0	0	0	0	0.513 (0.240, 0.811)
b	0	0	0	0	0
c	0	0	0	1	0
d	0	0	0	4	0
e	0	0	2	4	46

	Low	Medium	High
Adherence n (%)
Low	2 (66.7)	1 (33.3)	0 (0.0)	0.633 (0.455, 0.798)
Medium	3 (12.5)	20 (83.3)	1 (4.2)
High	1 (3.3)	6 (20.0)	23 (76.7)

I: item; 95%CI: 95% confidence interval.