The GENEUS 1 study addresses this gap by characterizing the real-world profiles, outcomes, and care pathways of adults aged 65 years and older hospitalized in neurosurgery across France, Spain, and Portugal. This project represents the first multicentre, transnational initiative to integrate geriatric principles into neurosurgical practice and to evaluate both clinical and economic outcomes in this population.
This is a prospective, multicentre, multinational, observational study. Seven neurosurgical centres in France, Spain, and Portugal will participate. Each participant will be followed at three timepoints: V0 (Admission): baseline clinical and geriatric assessment. V1 (Discharge): length of stay, complications, and updated functional and cognitive status. V2 (3 months ±1 week): structured telephone follow-up or face-to-face visit to assess readmission, autonomy, and quality of life. A 12-month medico-economic component (only in France) will evaluate healthcare utilization and costs using clinical data, patient or caregiver questionnaires, and linkage with the Système National des Données de Santé (SNDS) in France.
Study Type
OBSERVATIONAL
Enrollment
209
Limoges University Hospital
Limoges, France
CUF Descobertas
Lisbon, Portugal
ULS Santa Maria
Lisbon, Portugal
Hospital General Universitario Alicante
Alicante, Spain
The evolution of functional autonomy between baseline and 3 months post-discharge
The change is measured using validated geriatric scale Basic Activities of Daily Living Functional decline will be defined as any clinically significant decrease in ADL score compared with baseline. The change will be expressed both as a continuous variable (score variation) and as a categorical outcome (improved / stable / declined autonomy). This criterion captures the short-term functional trajectory of older adults after a neurosurgical hospitalization and serves as the main indicator of care effectiveness and adaptation to geriatric needs.
Time frame: between baseline and 3-month after discharge
Length of hospital stay
Number of days from admission to discharge.
Time frame: baseline until the day of hospital discharge
Postoperative complications
Complications classified according to the Clavien-Dindo scale
Time frame: the day of the hospital discharge
Daily living
scoring of the scale : instrumental activities of daily living (IADL) score 0 is the worst, score 8 is the best autonomy
Time frame: baseline, the day of hospital discharge and 3-month after discharge
Composite criteria of Cognitive status and delirium composed of 3 criteriaes
first criteria : score of the scale of Sclan and Reisberg - score is between 1 and 7 - 1 is the better and 7 the worst second criteria : score of the test for delirium \& cognitive impairment (4AT) - the score is beetwen 0 and 4 - 0 is the better and 4 the worst third criteria : Mini Mental State Examination
Time frame: baseline and the day of hospital discharge
Psychological status
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Complexo Hospitalario De Ourense
Ourense, Spain
Navarrabiomed
Pamplona, Spain
Scoring of the Patient Health Questionnaire (GDS4) - score is 0 to 4 - 0 is not depressed - 4 is very depressed
Time frame: baseline and 3month after discharge
Frailtry
scoring of CFS (clinical Frailty scale) - score from 1 to 9 (scores of 1-3 are considered non-frail, 4 to be pre-frail, 5-8 as frail and 9 as terminally ill)
Time frame: baseline, day of hospital discharge and 3 month after discharge
Quality of life score
Scoring of the EQ-5D-5L questionnaire (score from 0 to 100 - 0 is better and 100 is the worst)
Time frame: baseline, day of hospital discharge, and 3 months after discharge
Composite criteria composed of two criteriaes : functional recovery and autonomy evolution
Scoring of Activities of Daily Living (ADL) : score 0 to 6 : score of 0 is the worst and score 6 is the best and instrumental activities of daily living (IADL scale) score 0 is the worst, score 8 is the best autonomy
Time frame: 3 months after discharge