Table 2 Description of adherence measures

From: Prescription refill, patient self-report and physician report in assessing adherence to oral endocrine therapy in early breast cancer patients: a retrospective cohort study in Catalonia, Spain

 

% adherence a

Physician report

Telephone questionnaire

Pharmacy administrative database

Physician reportb

94.7

n=506

0.036 (0.041)

n=673

0.199 (0.028)

Physician report b

 Tamoxifen

93.4

n=136

0.076 (0.085)

n=193

0.267 (0.053)

 Inhibitors

94.7

n=142

0.050 (0.077)

n=201

0.143 (0.053)

 Tamoxifen + inhibitors

95.7

n=197

−0.018 (0.046)

n=238

0.019 (0.036)

 Others

94.0

n=31

−0.094 (0.167)

n=41

0.204 (0.095)

Telephone questionnaireb

92.0

n=506

0.036 (0.041)

n=494

0.102 (0.040)

Telephone questionnaire (high) b

 Tamoxifen

88.8

n=136

0.076 (0.085)

n=132

0.108 (0.070)

 Inhibitors

92.6

n=142

0.050 (0.077)

n=140

0.150 (0.081)

 Tamoxifen + inhibitors

93.8

n=197

−0.018 (0.046)

n=192

0.051 (0.067)

 Others

91.0

n=31

−0.094 (0.167)

n=30

0.019 (0.130)

Pharmacy administrative databaseb

74.7

n=673

0.199 (0.028)

n=494

0.102 (0.040)

Pharmacy administrative database b

 Tamoxifen

68.6

n=193

0.267 (0.053)

n=132

0.108 (0.070)

 Inhibitors

75.5

n=201

0.143 (0.053)

n=140

0.150 (0.081)

 Tamoxifen + inhibitors

78.5

n=238

0.019 (0.036)

n=192

0.051 (0.067)

 Others

74.0

n=41

0.204 (0.095)

n=30

0.019 (0.130)

  1. a% Adherence adjusted for centre, age at diagnosis and stage.
  2. bConcordance: kappa (s.e. for kappa statistic).