Costs and effects of comprehensive geriatric assessment in primary care for older adults with high risk for hospitalisation

Magnus Nord, Johan Lyth, Jenny Alwin, Jan Marcusson, Magnus Nord, Johan Lyth, Jenny Alwin, Jan Marcusson

Abstract

Background: The healthcare system needs effective strategies to identify the most vulnerable group of older patients, assess their needs and plan their care proactively. To evaluate the effectiveness of comprehensive geriatric assessment (CGA) of older adults with a high risk of hospitalisation we conducted a prospective, pragmatic, matched-control multicentre trial at 19 primary care practices in Sweden.

Methods: We identified 1604 individuals aged 75 years and older using a new, validated algorithm that calculates a risk score for hospitalisation from electronic medical records. After a nine-month run-in period for CGA in the intervention group, 74% of the available 646 participants had accepted and received CGA, and 662 participants remained in the control group. Participants at intervention practices were invited to CGA performed by a nurse together with a physician. The CGA was adapted to the primary care context. The participants thereafter received actions according to individual needs during a two-year follow-up period. Participants at control practices received care as usual. The primary outcome was hospital care days. Secondary outcomes were number of hospital care episodes, number of outpatient visits, health care costs and mortality. Outcomes were analysed according to intention to treat and adjusted for age, gender and risk score. We used generalised linear mixed models to compare the intervention group and control group regarding all outcomes.

Results: Mean age was 83.2 years, 51% of the 1308 participants were female. Relative risk reduction for hospital care days was - 22% (- 35% to - 4%, p = 0.02) during the two-year follow-up. Relative risk reduction for hospital care episodes was - 17% (- 30% to - 2%, p = 0.03). There were no significant differences in outpatient visits or mortality. Health care costs were significantly lower in the intervention group, adjusted mean difference was € - 4324 (€ - 7962 to - 686, p = 0.02).

Conclusions and relevance: Our findings indicate that CGA in primary care can reduce the need for hospital care days in a high-risk population of older adults. This could be of great importance in order to manage increasing prevalence of frailty and multimorbidity.

Trial registration: clinicaltrials.gov Identifier: NCT03180606 , first posted 08/06/2017.

Conflict of interest statement

The authors performed this study while employed by Linköping University and/or the County Council of Östergötland. These organisations were also the funders of the study.

Figures

Fig. 1
Fig. 1
Flow of participants
Fig. 2
Fig. 2
Mortality comparing intervention group (n = 646) and controls (n = 662) from 1 Jan 2018 until 31 Dec 2019

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