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. Author manuscript; available in PMC: 2010 Sep 12.
Published in final edited form as: HIV Clin Trials. 2008 Sep–Oct;9(5):298–308. doi: 10.1310/hct0905-298

Table 3.

Concordance between unannounced telephone-based and homes-based pill count adherence calculated using four criterion levels of adherence, N =68.

Phone Count Home Count
Definition of
Adherence		 N % N % % Agree-
    ment		 Discre-
pant		 Kappa
75% 14 21 15 23 93 1 .95
80% 17 26 18 27 94 1 .96
85% 23 35 25 38 92 2 .94
90% 27 41 27 41 93 2 .94
95% 38 57 38 57 100 0 1.0