OLIVER IBARRONDO

Dr. OLIVER IBARRONDO

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 April 2019 in Health and Quality of Life Outcomes
Verified
Journal Article
Open access
PDF file
AAArantzazu Arrospide
Arantzazu Arrospide
MMMónica Machón
Mónica Machón
JRJuan M. Ramos-Goñi
Juan M. Ramos-Goñi
OIOLIVER IBARRONDO
OLIVER IBARRONDO
JMJavier Mar
Javier Mar
Reducing health inequalities on the basis of social factors has been a key driver in the development of Public Health policies. Health-related quality of life is a global indicator useful to assess health inequalities within a society. The objective of this study was to identify inequalities on health by analysing the interactive effects of gender, age, educational level, social class, body mass index and chronic diseases on health-related quality of life in a Spanish population sample. We used data from the Spanish National Health Survey 2011–2012. Health-related quality of life was measured by the EQ-5D-5L instrument applying the Spanish value set. Probability of being in perfect health was ascertained by logistic regression models including gender, age, educational level, body mass index and social class and the corresponding terms of interaction. A two-part model combining logistic regression analysis and generalized linear models was applied to calculate the adjusted utility loss associated with chronic conditions (disutility values). The sample used for analysis contained 18,450 individuals. The mean age was 50 years, 51.3% were women, 55% were overweight or obese and 46.7% had low social status. The mean utility was 0.94 in men and 0.89 in women. Elderly women, obese people, those of low social class and those with chronic conditions had significant lower utility values. Within the regression analysis, interaction assessment revealed that the detrimental effect of obesity disappeared in higher social classes. Utility values for all chronic conditions considered were lower in women than in men and were on a gradient within social class, the lowest for individuals declaring stroke. The greatest decrease on health-related quality of life was determined by declaration of stroke (17.6%) or mental diseases (18.6%). The interactive effects of gender, age, educational level, social class, body mass index and chronic diseases on health-related quality of life in the Spanish population revealed important inequalities in health. Social class acted as a modulator of the stigma associated with obesity. Chronic conditions producing loss of autonomy had the greatest impact on reduction of health-related quality of life. This is the first study using the Spanish EQ-5D-5L value set to estimate utilities.

25 April 2018 in BMC Cancer
Verified
Journal Article
Open access
PDF file
AAArantzazu Arrospide
Arantzazu Arrospide
IIIsabel Idigoras
Isabel Idigoras
JMJavier Mar
Javier Mar
HKHarry de Koning
Harry de Koning
MMMiriam van der Meulen
Miriam van der Meulen
IVIris Lansdorp Vogelaar
Iris Lansdorp Vogelaar
The Basque Colorectal Cancer Screening Programme began in 2009 and the implementation has been complete since 2013. Faecal immunological testing was used for screening in individuals between 50 and 69 years old. Colorectal Cancer in Basque country is characterized by unusual epidemiological features given that Colorectal Cancer incidence is similar to other European countries while adenoma prevalence is higher. The object of our study was to economically evaluate the programme via cost-effectiveness and budget impact analyses with microsimulation models. We applied the Microsimulation Screening Analysis (MISCAN)-Colon model to predict trends in Colorectal Cancer incidence and mortality and to quantify the short- and long-term effects and costs of the Basque Colorectal Cancer Screening Programme. The model was calibrated to the Basque demographics in 2008 and age-specific Colorectal Cancer incidence data in the Basque Cancer Registry from 2005 to 2008 before the screening begun. The model was also calibrated to the high adenoma prevalence observed for the Basque population in a previously published study. The multi-cohort approach used in the model included all the cohorts in the programme during 30 years of implementation, with lifetime follow-up. Unit costs were obtained from the Basque Health Service and both cost-effectiveness analysis and budget impact analysis were carried out. The goodness-of-fit of the model adaptation to observed programme data was evidence of validation. In the cost-effectiveness analysis, the savings from treatment were larger than the added costs due to screening. Thus, the Basque programme was dominant compared to no screening, as life expectancy increased by 29.3 days per person. The savings in the budget analysis appeared 10 years after the complete implementation of the programme. The average annual budget was €73.4 million from year 2023 onwards. This economic evaluation showed a screening intervention with a major health gain that also produced net savings when a long follow-up was used to capture the late economic benefit. The number of colonoscopies required was high but remain within the capacity of the Basque Health Service. So far in Europe, no other population Colorectal Cancer screening programme has been evaluated by budget impact analysis.

1 May 2022 in Gaceta Sanitaria
Verified
Journal Article
Open access
OIOLIVER IBARRONDO
OLIVER IBARRONDO
GLGarbiñe Lizeaga
Garbiñe Lizeaga
JMJosé Miguel Martínez-Llorente
José Miguel Martínez-Llorente
ILIgor Larrañaga
Igor Larrañaga
MSMyriam Soto-Gordoa
Myriam Soto-Gordoa
IÁIsabel Álvarez-López
Isabel Álvarez-López
To measure 3-year care costs of breast, prostate, colorectal and lung cancers disaggregated by site and clinical stage. A retrospective observational design was employed to investigate care costs of cases recorded in the Registry of the Basque Country between 2010 and 2015. Data gathered included TNM stage and demographic, clinical and resource use variables. Total costs per patient with stage IV disease were calculated by combining generalized linear models with parametric survival analysis. Unit costs were obtained from the analytical accounting system of the Basque Health Service. The sample comprised 23,782 cancer cases (7801 colorectal, 5530 breast, 4802 prostate and 5649 lung cancer). The mean 3-year costs per patient with stage I to III disease were €11,323, €13,727, €8,651 and €12,023 for colorectal, breast, prostate and lung cancer, respectively. The most important cost components were surgery and chemotherapy. Total survival-adjusted costs until death for patients with stage IV disease (€27,568, €26,296, €16,151 and €15,931 for breast, colorectal, lung and prostate cancer, respectively) were higher than the 3-year costs for those with earlier-stage disease. This study quantitatively shows the pattern of changes in the economic burden of cancer throughout its natural history and the great magnitude of this burden for the health system. The use of indicators based on real-world data from each regional health service would allow cancer care in each region to be tailored to local population needs.

1 July 2022 in Revista de Psiquiatría y Salud Mental
Verified
Journal Article
Closed access
JMJavier Mar
Javier Mar
AGAnia Gorostiza
Ania Gorostiza
AAArantzazu Arrospide
Arantzazu Arrospide
ILIgor Larrañaga
Igor Larrañaga
AAAne Alberdi Aramendi
Ane Alberdi Aramendi
OIOLIVER IBARRONDO
OLIVER IBARRONDO

1 July 2019 in Neuropsychiatric Disease and Treatment
Verified
Journal Article
Open access
PDF file
JMJavier Mar
Javier Mar
AAArantzazu Arrospide
Arantzazu Arrospide
MSMyriam Soto-Gordoa
Myriam Soto-Gordoa
ÁIÁlvaro Iruin
Álvaro Iruin
MTMikel Tainta
Mikel Tainta
OIOLIVER IBARRONDO
OLIVER IBARRONDO
Background: Dementia-related neuropsychiatric symptoms (NPS) are the main determinant of family stress and institutionalization of patients. This study aimed to identify inequalities by gender and socioeconomic status in the management of NPS in patients diagnosed with dementia. Methods: An observational study was carried out to study all the cases of dementia in the corporate database of the Basque Health Service (29,864 patients). The prescription of antipsychotics and antidepressants and admission to a nursing home were used to establish the presence of NPS. The socioeconomic status of individuals was classified by a deprivation index. Logistic regressions were used to identify drivers for drug prescriptions and institutionalization. Results: NPS are poorly recorded in the clinical databases (12%). Neuropsychiatric symptoms were severe enough in two thirds of patients with dementia to be treated with psychoactive medication. Institutionalization showed an increase from those who did not receive medication to those who had been prescribed antidepressants (OR: 1.546), antipsychotics (OR: 2.075) or both (OR: 2.741). The resulting inequalities were the increased prescription of antidepressant drugs in women and more nursing-home admissions for women who were the least socioeconomically deprived and men who were the most deprived. Conclusions: In large clinical databases, psychoactive drugs prescriptions can be useful to underscore the considerable burden of dementia-related NPS. Specific tools are needed to monitor social and health care programs targeted to dementia-related NPS from a population perspective. Programs aimed at reducing the family burden of care of dementia patients at home become the key elements in reducing inequalities in these patients’ care. Socioeconomic status is the most important driver of inequality, and gender inequality may simply be hidden within the social environment. Integrated programs boosting the continuity of care are an objective for which compliance could be measured according to the NPS coding in the electronic health record.

4 June 2018 in Surgical Endoscopy
Verified
Journal Article
Closed access
PDF file
JMJavier Mar
Javier Mar
AAAne Anton-Ladislao
Ane Anton-Ladislao
OIOLIVER IBARRONDO
OLIVER IBARRONDO
AAArantzazu Arrospide
Arantzazu Arrospide
SLSantiago Lázaro
Santiago Lázaro
TGthe REDISSEC-CARESS/CCR group
the REDISSEC-CARESS/CCR group