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Table 3 Most common potentially inappropriate prescriptions (PIPs) among older patients receiving medication in long-term care

From: Potentially inappropriate prescriptions for older patients in long-term care

Criteria Number of patients Proportion of all patients prescribed a medication (%) (N = 2,481)
Potentially inappropriate medication 365 14.7
   Long-acting benzodiazepines 138 5.6
   Preparations including an antihistaminic 112 4.5
   Flurazepam 54 2.2
   Doxepin 31 1.3
   Amitryptiline 27 1.1
   Propanolol 27 1.1
   Chloral hydrate 22 0.9
Potentially inappropriate duration 585 23.6
   Intermediate and short-acting benzodiazepines at bedtime for more than one month 567 22.9
   Oxazepam at bedtime for more than one month 313 12.6
Potentially inappropriate dosage 239 9.6
   Haloperidol > 3 mg daily 129 5.2
   Thioridazine > 30 mg daily 53 2.1
   Lorazepam > 3 mg daily 34 1.4
Potential drug-drug interaction 842 33.9
   Repeat* prescription of antipsychotics 409 16.5
   Repeat* prescription of benzodiazepine 369 14.9
   Clonazepam and other benzodiazepine 46 1.9
   Benzodiazepine and hypnotic or sedative 93 3.8
   Repeat* prescription of calcium channel blockers 77 3.1
   Repeat* prescription of tricyclic antidepressants 37 1.5
   Repeat* prescription of angiotensin converting enzyme inhibitors 19 0.8
   Repeat* prescription of β-blockers 11 0.4
   Repeat* prescription of non-steroidal anti-inflammatory drugs (except acetylsalicylic acid) 10 0.4
   Repeat* prescription of barbiturate 10 0.4
Total potential inappropriate prescriptions** 1,358 54.7
  1. *Repeat prescription indicates that two agents of the same drug class are being prescribed
  2. **Numbers do not add up since one prescription may be linked to more than one PIP (e.g., duration and dosage)