Table 3

Risk factors contributing to the occurrence of DRPs rated from the expert panel as ‘rather unimportant’ (Likert scale: 2) or ‘unimportant’ (Likert scale: 1) and therefore not included in the final list of risk factors

Risk factorDelphiNGTLiterature
MedianIQRRanking listQualitative analysis
Age2.53.75–2.00Yes30, 5
Extreme body weight (too high or too low)23.00–2.00Yes
Antiplatelet drugs23.00–2.0010, 23, 24
Drugs affecting the RAAS23.00–2.0010, 23
Patient living alone23.00–2.00Yes18, 19, 31
Calcium antagonists23.00–2.0010, 23, 20
Nitrates23.00–2.0023, 24
Patient's education about his therapy22.75–2.00Yes11
β-blockers22.00–2.0010, 20, 23, 24, 25
Antacids22.00–2.00
High risk of falls, motion insecurity22.00–2.00YesYes18, 19, 20, 25, 28, 29, 31
Previous hospitalisation in the last 30 days22.00–2.0017, 18, 30
Need for caregiver at home22.00–2.00Yes10
Calcium containing drugs22.00–1.0027
Respiratory drugs23.00–1.0010, 23, 26
  • The sequence represents the ratings of the Delphi survey indicating median ratings and IQR, and appearance in the NGT ranking list, the qualitative analysis of the NGT and in the literature. Factors with no reference in the literature section were only mentioned by the experts.

  • DRP, drug-related problem; NGT, nominal group technique; RAAS, renin-angiotensin-aldosterone system.