title: Health-related quality-of-life outcome in patients with idiopathic normal-pressure hydrocephalus - a 1-year follow-up study.
abstract: This prospective study explored the factors affecting the health-related quality-of-life (HRQoL) outcome in patients with idiopathic normal-pressure hydrocephalus (iNPH) 1 year after the installation of the cerebrospinal fluid shunt.
  
  
  
  The HRQoL outcome was evaluated using a 15D instrument, in which the minimum clinically significant change/difference has been estimated to be ±0.015. The follow-up data (15D, Mini-Mental State Examination, Beck Depression Inventory, iNPH Grading Scale), frontal cortical biopsy, Charlson Age Comorbidity Index and body mass index of 145 patients diagnosed with iNPH by clinical and radiological examination were analyzed.
  
  
  
  At 1-year follow-up, 63 (43%) patients had experienced a clinically significant improvement in HRQoL. Multivariate binary logistic regression analysis indicated that the absence of amyloid-β and hyperphosphorylated tau pathology in the frontal cortical biopsy (53% vs. 33%; absolute risk difference, 20%; adjusted odds ratio, 2.27; 95% confidence interval, 1.07-4.84; P < 0.05) and lower body mass index (adjusted odds ratio, 0.90, 95% confidence interval, 0.82-0.98; P < 0.05) predicted favorable HRQoL outcome 1 year after the shunting.
  
  
  
  Less than half of the patients with iNPH experienced clinically significant favorable HRQoL outcome, partly explained by the patient's characteristics and comorbidities. The HRQoL approach reveals aspects that are important for the patient's well-being, but may also improve the quality of the outcome assessment of cerebrospinal fluid shunting. Study results may help clinicians to estimate which patients will benefit shunt surgery.
authors.affiliation: Neurosurgery of NeuroCenter, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Junkkari
authors.affiliation: Neurosurgery of NeuroCenter, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Häyrinen
authors.affiliation: Department of Pathology, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Rauramaa
authors.affiliation: Department of Public Health, University of Helsinki, Helsinki, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Sintonen
authors.affiliation: Neurology of NeuroCenter, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
authors.forename: O
authors.initials: O
authors.lastname: Nerg
authors.affiliation: Neurology of NeuroCenter, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
authors.forename: A M
authors.initials: AM
authors.lastname: Koivisto
authors.affiliation: Research Centre for Comparative Effectiveness and Patient Safety, University of Eastern Finland, Kuopio, Finland.|Group administration of the Hospital District of Helsinki and Uusimaa, Helsinki, Finland.
authors.forename: R P
authors.initials: RP
authors.lastname: Roine
authors.affiliation: Department of Psychiatry, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Viinamäki
authors.affiliation: Department of Neurology, University of Eastern Finland, Kuopio, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Soininen
authors.affiliation: Neurology of NeuroCenter, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Luikku
authors.affiliation: Neurosurgery of NeuroCenter, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: J E
authors.initials: JE
authors.lastname: Jääskeläinen
authors.affiliation: Neurosurgery of NeuroCenter, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland.
authors.forename: V
authors.initials: V
authors.lastname: Leinonen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001706:Biopsy; D015992:Body Mass Index; D002557:Cerebrospinal Fluid Shunts; D003071:Cognition; D015897:Comorbidity; D005260:Female; D005500:Follow-Up Studies; D005625:Frontal Lobe / Q000473:pathology; D006801:Humans; D006850:Hydrocephalus, Normal Pressure / Q000523:psychology* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D011788:Quality of Life; D018570:Risk Assessment; D016896:Treatment Outcome
keywords: 15D; Alzheimer's disease; Charlson Age Comorbidity Index; depression; frontal cortical biopsy; health-related quality of life; idiopathic normal-pressure hydrocephalus; multiple imputation