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Table 1 Study characteristics

From: Adherence influencing factors – a systematic review of systematic reviews

Study

Search period

Inclusion criteria*

Broekmans [11]

Not limited – 12/2006

Adult patients with chronic non -malignant pain

  

Adult patients with prescribed pain medication

  

Original research

Daley [12]

Not limited – 01/2012

Patients with Parkinson

  

All ranges and duration of anti- parkinsonian treatments

  

All age ranges

  

Published in English

  

Presenting quantitative/qualitative data

Oosterom-Calo [13]

Not limited – 08/2010

50% heart failure patients

  

Quantitative results were reported

  

Studies of at least fair quality

  

Evaluations of interventions were not the main purpose

  

No descriptive study

  

No review paper

  

Published in English

Pasma [14]

Not limited – 02/2011

Inflammatory arthritis patients

  

Used a reproducible definition or validated instrument to measure adherence

  

Provided a statistical measure to reflect the strength of the association between the determinant and adherence

  

No letters, editorials, reviews, RCTs, case reports, qualitative studies and opinion articles

Schrijvers [15]

Not reported – 15/2012

Haemophilia A or B

  

Prophylactic treatment

  

All age groups

Sinnott [16]

1946 – 09/2012

Participants received healthcare from a public insurance scheme

  

Comparator group was the same population/similar population who either didn’t pay copayments or experienced no increase in copayment

  

The intervention was copayment; either an increase in an existing copayment or the introduction of a copayment (no other types of cost-sharing, for example co-insurance)

  

Studies included were randomised controlled trials, controlled before and after studies, interrupted time series designs, repeated measures designs, and cohort designs

Verbrugghe [17]

NR

Oral anti- cancer drugs

  

Age ≥ 18

  

Strong or moderate methodological quality

  

Written in English, French, German or Dutch

  

Original research articles published between 1990 and April 2012

  

Studies not conducted in developing countries

  

All study designs

  1. *Indication & medication marked bold.