Table 4.
Types and prevalence of PIs.
| Type of PI | No. of PIs (%) |
|---|---|
| Omission 1 | 32 (28.3%) |
| Errors in taking medication history 1: | 18 (15.9%) |
| Incorrect frequency | 11 (9.7%) |
| Incorrect dose | 4 (3.5%) |
| Incorrect formulation | 1 (0.9%) |
| Incorrect drug and dose | 1 (0.9%) |
| Incorrect drug and strength | 1 (0.9%) |
| Duplication: | 18 (15.9%) |
| Co-prescribe same drug | 10 (8.6%) |
| Co-prescribe same drug class | 8 (7.1%) |
| Poor prescribing practice: | 17 (15.0%) |
| Frequency of administration unclear | 7 (6.2%) |
| Dose charted unclear | 6 (5.3%) |
| Drug charted unclear | 4 (3.5%) |
| Dose 2: | 8 (7.1%) |
| More than licensed dose | 6 (5.3%) |
| Less than licensed dose | 2 (1.8%) |
| Other: | 8 (7.1%) |
| Interaction 2+3+4 | 6 (5.3%) |
| Pharmacokinetic | 3 (2.7%) |
| Pharmacodynamic | 3 (2.7%) |
| Timing 2+3 | 3 (2.7%) |
| Frequency 2 | 2 (1.8%) |
| Less than licensed frequency | 2 (1.8%) |
| Duration | 1 (0.9%) |
Abbreviations: PI: pharmacist intervention; PIs: pharmacist interventions. 1 Drug kardex was checked for errors using admission notes and/or contacting community pharmacy and/or contacting general practitioner. 2 As per Summary of Product Characteristics. 3 As per British National Formulary 75 [35]. 4 As per Lexicomp® Drug Interactions checker [36]. Terms in bold are the main headings, and underneath are specific examples.