Table 3.

Agreement between multiple measures and dichotomized MEMS^®

	Kappa statistics
Adherence measure	Visit 1	Visit 2	Visit 3	Visit 4	Visit 5	Visit 6
3-day recall	0.05	0.25**	0.14*	0.14*	0.12*	0.23*
7-day recall	0.11	0.29**	0.21*	0.24**	0.34**	0.29**
30-day recall	0.10	0.33**	0.36**	0.28**	0.37**	0.30**
VAS	0.10	0.21	0.22*	0.08	0.04	0.20*
NVP drug concentration	0.15*	–	–	0.24**	–	–
EFV drug concentration	0.36**	–	–	0.20	–	–
AMPATH clinical encounter form	0.11*	0.13*	0.12*	0.06	0.16*	0.12*

^*p<0.05

^**p≤0.001.