The aim of the present study was to correlate statements made by 100 patien
ts of an internal medicine ward regarding their compliance before hospitali
sation, with their personal knowledge of and convictions about their own ph
armacotherapy. Data were collected in structured interviews of 9 questions
carried out by a medical person not involved in current treatment. The pati
ent sample (mean age +/- SE: 66.8 +/- 1.3 years) included 42 women and 58 m
en whose mean number of prescribed medications before hospitalisation was 4
.7 +/- 0.22. Good treatment compliance was reported by 78% of the patients,
while 13% admitted noncompliance. Knowledge about the drugs they had been
prescribed ranged from perfect (30%) to none (34%) and was significantly di
fferent between compliers and non-compliers, with patients who knew their m
edications at least by name being fairly compliant (p = 0.048). Independent
ly of the statement about compliance, the patients used three main strategi
es to ensure regular intake of daily medication: visual aids (69%), couplin
g to a ritual (26%) or supervision by a third person (6%). Criteria such as
gender, the number of prescribed medications, personal perseverance, or pe
rsonal definition of the sense of the prescribed pharmacotherapy, or the ar
guments expected to be used by a physician when recommending a pharmacother
apy did not differ between compliers and non-compliers. Thus, compliance ap
pears to have its roots mainly in the conviction level of each patient: int
ention will be transformed into action when deemed correct according to the
individual's personal criteria. This may lead to both compliance and to no
n-compliance with medical recommendations. This study, which is based on pa
tient reports, supports the conclusion that drug compliance may be enhanced
by increasing patient's knowledge about their own pharmacotherapy and by h
aving patients use specific strategies to guarantee regular daily intake of
drugs. Prospective studies should therefore address the question of whethe
r providing specific information according to a patient's convictions will
ultimately translate into improved compliance.