The impact of hospitalisation to geriatric wards on the use of medications and potentially inappropriate medications - a health register study

BACKGROUND

The use of potentially inappropriate medications (PIMs) are associated with negative health effects for older adults. The purpose of this study was to apply national register data to investigate the impact of hospitalisation to geriatric wards in Norway on the use of medications and PIMs, and to compare two explicit PIM identification tools.

METHODS

We included 715 patients ≥65 years (mean 82.5, SD = 7.8) admitted to Norwegian geriatric wards in 2013 identified from The Norwegian Patient Registry, and collected their medication use from the Norwegian Prescription Database. Medication use before and after hospitalisation was compared and screened for PIMs applying a subset of the European Union (EU)(7)-PIM list and the Norwegian General Practice - Nursing Home (NORGEP-NH) list part A and B.

RESULTS

The mean number of medications increased from 6.5 (SD = 3.5) before to 7.5 (SD = 3.5) (CI:1.2-0.8, p < 0.001) after hospitalisation. The proportion of patients with PIMs increased from before to after hospitalisation according to the EU(7)-PIM list (from 62.4 to 69.2%, p < 0.001), but not according to The NORGEP-NH list (from 49.9 to 50.6%, p = 0.73). The EU(7)-PIM list and the NORGEP-NH list had more than 70% agreement on the classification of patients as PIM users.

CONCLUSIONS

Medication use increased after hospitalisation to geriatric wards. We did not find that geriatric hospital care leads to a general improvement in PIM use after hospitalisation. According to a subset of the EU(7)-PIM list, PIM use increased after hospitalisation. This increase was not identified by the NORGEP-NH list part A and B. It is feasible to use health register data to investigate the impact of hospitalisation to geriatric wards on medication use and PIMs.

General practitioners' prescriptions of benzodiazepines, Z-hypnotics and opioid analgesics for elderly patients during direct and indirect contacts. A cross-sectional, observational study

OBJECTIVE

To describe Norwegian general practitioners' (GPs') prescription patterns of benzodiazepines, Z-hypnotics and opioid analgesics (BZO-drugs) to elderly (≥70 years) patients.

DESIGN, SUBJECTS AND SETTING

Cross sectional, observational study. Contact- and prescription data from 148 Norwegian GPs, issued for elderly patients during eight months in 2008. GP-patient contacts were categorized as direct contacts (DC: face-to-face consultations) or indirect contacts (IC: via third party, phone or mail). Explanatory variables were characteristics linked to the GPs, patients, and practices. During analyses, GPs' number of listed patients, share of which for elderly patients, and total number of patient consultations during the period (proxy for practice activity), were categorized in quintiles (Q1-5) by number of GPs.

MAIN OUTCOME MEASURES

Number of BZO-drug prescriptions and quantities issued during direct- and indirect GP-patient contacts.

RESULTS

In total, 62% of BZO-prescriptions were issued during ICs. Of all prescriptions, 66% were large quantum packages (50 tablets or more), 62% out of which were prescribed during ICs. During the study period, 50% of the patients received repeat prescriptions. Prescribing during ICs was associated with low over all practice activity (Q1) and many (Q5) older patients on the GP's lists.

CONCLUSION

GPs' BZO-drug prescribing to elderly occur more frequently during ICs than within DCs, and are more commonly issued as large quantity packages. This indicates that regular- or long-term use among elderly is common, contrasting with previous and current national guidelines, which recommend regular clinical assessments and short time or intermittent use of BZO-drugs. Key Points GPs frequently prescribe benzodiazepines, Z-hypnotics and opioid (BZO) drugs for elderly people. BZO-drugs are frequently issued during indirect GP-patient contacts and in relatively large quantities, indicating regular or long-term use. GPs' BZO-drug prescribing patterns contrast with national guidelines recommending clinical assessment and short time or intermittent use of BZO-drugs.

New benzodiazepine and Z-hypnotic users and disability pension: an eight-year nationwide observational follow-up study

OBJECTIVE

To compare how newly initiated treatment with benzodiazepines, Z-hypnotics or both associates with the reception of disability pension among 40,661 individuals of a working age.

DESIGN

Prescription register study.

SETTING

Norwegian nationwide prescriptions socio-economic and disability status data.

METHODS

Cox regression analyses.

SUBJECTS

New benzodiazepine or Z-hypnotic users.

MAIN OUTCOME MEASURE

Time to receive disability pension given benzodiazepine or Z-hypnotic use or both. Additional analyses focused on the benzodiazepine first redeemed.

RESULTS

Among new users 8.65% of Z-hypnotic users, 12.29% of benzodiazepines users and 13.96% of combined Z-hypnotic and benzodiazepine users became disability pensioners. Z-hypnotic users were weaker associated with becoming disability pensioners (HR = 0.78, CI: 0.73-0.84) and combined users were stronger associated (HR = 1.09, CI: 1.01-1.17), than benzodiazepine users. Women had higher risk than men for becoming disability pensioners. Higher age, lower education, previous drug use and psychiatrist as first prescriber were risk factors. Comparing first benzodiazepine redeemed; clonazepam initiators were stronger associated with becoming disability pensioners than diazepam initiators were (HR = 2.22, CI: 1.81-2.71). No differences between other benzodiazepine users were found.

CONCLUSIONS

Adjusting for known risk factors gave lower risk for Z-hypnotic users compared to benzodiazepine users for receiving disability pension. Combined use increased the risk further. Clonazepam initiators are especially at risk. These findings may be helpful in prescribing situations to identify and guide individuals at risk for becoming disability pensioners.