Clustering 5-Year Multidimensional Health Care Trajectory Patterns in Alzheimer's Disease and Related Syndromes

Impact of modifications to antidementia drug reimbursement in France: Analysis of the FRA-DEM cohort

AIMS

Alzheimer's disease and related diseases (ADRD) is a progressive and inexorable disease. In France, acetylcholinesterase inhibitors and memantine were reimbursed for subjects with ADRD, until 2 modifications of their reimbursement rate (2012, 2018). We aimed to study the consequences of these measures on ADRD subjects' healthcare use.

METHODS

We analysed data from the FRA-DEM cohort, including subjects with presumed incident ADRD identified since 2011 in the French health insurance system. We studied the healthcare use of subjects identified with incident ADRD in 2011, 2013, 2015, 2017 and 2019, notably the annual number of defined daily doses of various psychotropic groups. We performed 2 multivariate multinomial logistic regressions with the subcohort year as the dependent variable.

RESULTS

In total, 165 120 subjects were included. A progressive decrease in exposure to antidementia drugs was observed between 2011 and 2019. Consultations with private neurologists or psychiatrists, and exposure to risperidone, antidepressants and benzodiazepines increased in the 2019 subcohort, following the 2018 reimbursement withdrawal. Meanwhile, the use of nursing/allied healthcare and emergency care increased over the subcohort years, whereas we observed a decrease in general practitioner consultations.

CONCLUSION

These results suggest increases in private neurologist or psychiatrist consultations and exposure to recommended drugs after the reimbursement withdrawal, contrary to the fears expressed. However, antidementia drug exposure decreased long before the reimbursement modifications, probably due to the growing evidence of the modest effect of these drugs, and exposure to benzodiazepines increased after the reimbursement withdrawal.

Which factors preceding dementia identification impact future healthcare use trajectories: multilevel analyses in administrative data

BACKGROUND

Healthcare use patterns preceding a diagnosis of Alzheimer's Disease and Related Diseases (ADRD) may be associated with the quality of healthcare use trajectories (HUTs) after diagnosis. We aimed to identify determinants of future favorable HUTs, notably healthcare use preceding ADRD identification.

METHODS

This nationwide retrospective observational study was conducted on subjects with incident ADRD identified in 2012 in the French health insurance database. We studied the 12-month healthcare use ranging between 18 and 6 months preceding ADRD identification. The five-year HUTs after ADRD identification were qualified by experts as favorable or not. In order to take into account geographical differences in healthcare supply, we performed mixed random effects multilevel multivariable logistic regression model to identify determinants of future favorable HUTs. Analyses were stratified by age group (65-74, 75-84, ≥ 85).

RESULTS

Being a woman, and preventive and specialist care preceding ADRD identification increased the probability of future favorable HUT, whereas institutionalization, comorbidities, medical transportation and no reimbursed drug during [-18;-6] months decreased it. Besides, some specificities appeared according to age groups. Among the 65-74 years subjects, anxiolytic dispensing preceding ADRD identification decreased the probability of future favorable HUT. In the 75-84 years group, unplanned hospitalization and emergency room visit preceding ADRD identification decreased this probability. Among subjects aged 85 and older, short hospitalization preceding ADRD identification increased the probability of future favorable HUTs.

CONCLUSION

Regular healthcare use with preventive and specialist care preceding ADRD identification increased the probability of future favorable HUTs whereas dependency decreased it.

Healthcare use patterns before Alzheimer's disease and related diseases identification and future healthcare trajectory

OBJECTIVES

A frequent late Alzheimer's Disease and Related Diseases (ADRD) identification is described and may induce erratic health resource use. We aimed to describe healthcare use patterns preceding ADRD identification.

METHODS

We studied persons aged 65 or older, identified with incident ADRD in 2012 in the French health insurance database. Healthcare use covering a wide range of care in ambulatory and hospital settings during the period ranging from 18 to six months before ADRD identification was studied. The main dimensions of healthcare use patterns before ADRD identification were investigated in three age groups (65-74, 75-84, ≥85) through a multiple correspondence analysis. These dimensions were secondarily interpreted according to the 5-year healthcare trajectory following ADRD identification, qualified as favorable (or not) by experts in the field.

RESULTS

This research studied 36,990 subjects. Four dimensions raised in each age group. Two dimensions' interpretations were retrieved in all age groups: intensity of healthcare use, functional dependency. However, their rank differed along with the qualification of the future healthcare trajectory. Some specificities appeared in some age group. In the 65-74 and 75-84 years groups, there were dimensions reflecting healthcare use related to psychiatric or psycho-behavioral disorders. In the ≥85 group, two dimensions reflected dependency related to other comorbidities, and organised medical follow-up.

CONCLUSION

Several dimensions emerged in line with erratic trajectories before ADRD identification. They underlined the need for actions towards ADRD identification.

Potential determinants of unfavourable healthcare utilisation trajectories during the last year of life of people with incident Alzheimer Disease or Related Syndromes: a nationwide cohort study using administrative data

BACKGROUND

people approaching the end-of-life frequently face inappropriate care. With Alzheimer Disease or Related Syndromes (ADRS), end-of-life is characterised by progressive decline, but this period remains difficult to identify. This leads to a lack of anticipation and sometimes with unfavourable healthcare utilisation trajectories (HUTs).

OBJECTIVE

to quantify unfavourable HUTs during the last year of life and identify their potential determinants in both community and nursing-home settings.

DESIGN

nationwide cohort study using administrative database.

SETTING

French community and nursing-home residents.

SUBJECTS

incident ADRS people identified in 2012, who died up to 31 December 2017.

METHODS

we used multidimensional clustering to identify 15 clusters of HUTs, using 11 longitudinal healthcare dimensions during the last year of life. Clusters were qualitatively assessed by pluri-disciplinary experts as favourable or unfavourable HUTs. Individual and contextual potential determinants of unfavourable HUTs were studied by setting using logistic random-effect regression models.

RESULTS

62,243 individuals died before 31 December 2017; 46.8% faced unfavourable end-of-life HUTs: 55.2% in the community and 31.8% in nursing-homes. Individual potential determinants were identified: younger age, male gender, ADRS identification through hospitalisation, shorter survival, life-limiting comorbidities, psychiatric disorders, acute hospitalisations and polypharmacy. In the community, deprivation and autonomy were identified as potential determinants. Contextual potential determinants raised mostly in the community, such as low nurse or physiotherapist accessibilities.

CONCLUSIONS

Nearly half of people with ADRS faced unfavourable HUTs during their last year of life. Individual potential determinants should help anticipate advance care planning and palliative care needs assessment. Contextual potential determinants suggest geographical disparities and health inequalities.