Linking national public services data to estimate the prevalence of intellectual disabilities in The Netherlands: results from an explorative population-based study

Care needs of chronically ill patients with intellectual disabilities in Dutch general practice: patients' and providers' perspectives

BACKGROUND

To reduce the impact of chronic diseases (cardiovascular disease, diabetes mellitus type 2, and chronic lung disease (asthma or chronic obstructive pulmonary disease (COPD)), it is imperative that care is of high quality and suitable to patients' needs. Patients with intellectual disabilities (ID) differ from the average patient population in general practice because of their limitations in adaptive behaviour and intellectual functioning, and concomitant difficulties recognising and reacting to disease symptoms, proactively searching health information, and independently managing diseases effectively. Because of these differences, information on their care needs is essential for suitable chronic disease management (CDM). Inadequate recognition of the care needs of this vulnerable population may hamper the harmonisation of evidence-based and person-centred care, compounded by issues such as stigma, misconceptions, and diagnostic overshadowing. This study therefore aimed to explore the needs of patients with ID from perspectives of both patients and of healthcare providers (HCPs) in the context of CDM in general practice.

METHODS

This qualitative study recruited patients with ID for face-to-face individual interviews and HCPs for focus groups. With the Chronic Care Model as the underlying framework, semi-structured interviews and focus-group guides were defined to explore patients' care needs and HCPs' perspectives. All interviews and focus groups were audio-recorded and transcribed verbatim. Using Atlas.ti software, data were analysed using reflexive thematic analysis.

RESULTS

Between June and September 2022, 14 patients with ID and cardiovascular disease, diabetes mellitus type 2, and/or asthma/COPD were interviewed; and 32 general practitioners and practice nurses participated in seven focus groups. We identified six care needs underpinning suitable CDM: trusting relationship between patient and HCP; clear expectations about the CDM process; support in disease management; directive decision-making; support in healthy lifestyle; accessible medical information.

CONCLUSIONS

This vulnerable patient population has complex care needs that must be acknowledged for suitable CDM. Although HCPs largely recognise these needs, organisational factors and lack of training or experience with patients with ID hamper HCPs' ability to fully adjust care provision to these needs. Access to, and knowledge of, easy-language information on chronic diseases and communication guidelines could aid HCPs to facilitate patients in managing their diseases more adequately.

Mind the gap: knowledge, attitudes and perceptions on antimicrobial resistance, antimicrobial stewardship and infection prevention and control in long-term care facilities for people with disabilities in the Netherlands

BACKGROUND

Antimicrobial resistance (AMR) has become one of the major public health threats worldwide, emphasizing the necessity of preventing the development and transmission of drug resistant microorganisms. This is particularly important for people with vulnerable health conditions, such as people with intellectual disabilities (ID) and long-term care residents. This study aimed to assess the current status of AMR, antimicrobial stewardship (AMS) and infection prevention and control (IPC) in Dutch long-term care facilities for people with intellectual disabilities (ID-LTCFs).

METHODS

A web-based cross-sectional survey distributed between July and November 2023, targeting (both nonmedically and medically trained) healthcare professionals working in ID-LTCFs in The Netherlands, to study knowledge, attitudes and perceptions regarding AMR, AMS and IPC.

RESULTS

In total, 109 participants working in 37 long-term care organizations for people with intellectual disabilities throughout the Netherlands completed the questionnaire. The knowledge levels of AMR and IPC among nonmedically trained professionals (e.g., social care professionals) were lower than those among medically trained professionals (p = 0.026). In particular regarding the perceived protective value of glove use, insufficient knowledge levels were found. Furthermore, there was a lack of easy-read resources and useful information regarding IPC and AMR, for both healthcare professionals as well as people with disabilities. The majority of the participants (> 90%) reported that AMR and IPC need more attention within the disability care sector, but paradoxically, only 38.5% mentioned that they would like to receive additional information and training about IPC, and 72.5% would like to receive additional information and training about AMR.

CONCLUSION

Although the importance of AMR and IPC is acknowledged by professionals working in ID-LTCFs, there is room for improvement in regards to appropriate glove use and setting-specific IPC and hygiene policies. As nonmedically trained professionals comprise most of the workforce within ID-LTCFs, it is also important to evaluate their needs. This can have a substantial impact on developing and implementing AMR, AMS and/or IPC guidelines and policies in ID-LTCFs.

Reproductive health of women with intellectual disability: antenatal care, pregnancies and outcomes in the Dutch population

BACKGROUND

Research in a handful of countries found that women with intellectual disability (ID) faced barriers and risks regarding antenatal care and reproductive health. This study tested disparities between women in the Netherlands with and without ID in antenatal care, pregnancy rates and pregnancy outcomes.

METHODS

Secondary analyses on the large representative panel of primary health patients in the Netherlands by the Netherlands Institute for Health Services Research (NIVEL) compared women in their reproductive age (18-49 years) with (n = 2397) and without (n = 228 608) indicators of ID. Bias due to underreporting and under-identification was reduced by linkage with an index of ID for the total Dutch population from Statistical Netherlands.

RESULTS

Women with ID were more likely to receive contraceptive care [95% confidence interval (CI) for odds ratio (OR) = 1.37-1.61] and became somewhat more often pregnant (95% CI OR = 1.06-2.30) than women from the general population, adjusting for age difference and follow-up time. No statistical differences were found in medical complications during pregnancy, delivery and immediately after birth, but women with indicators of ID had a higher risk of losing their pregnancy, including through induced abortion (95% CI OR = 1.26-1.99).

CONCLUSIONS

Women with ID have specific needs around contraceptive care and risks around their pregnancy that may require more awareness among practitioners and better understanding of the processes of care and decision-making.

Chronic disease management in patients with intellectual disabilities: a matched study in Dutch general practice

BACKGROUND

Disease management programmes (DMPs) aim to deliver standardised, high- quality care to patients with chronic diseases. Although chronic diseases are common among people with intellectual disabilities (ID), this approach may be suboptimal for meeting their care needs.

AIM

To examine differences between patients with and without ID who have a chronic illness in DMP enrolment and disease monitoring in Dutch general practice.

DESIGN AND SETTING

Observational study utilising the Nivel Primary Care Database (2015-2018) comparing patients with ID and cardiovascular disease, diabetes mellitus, or chronic obstructive pulmonary disease (COPD) with matched (1:5) controls with these conditions but without ID.

METHOD

Using conditional logistic regression, enrolment in DMP per chronic disease was examined and differences tested between groups in the frequencies of consultations, medication prescriptions, and routine examinations.

RESULTS

A total of 2653 patients with chronic illness with ID were matched with 13 265 controls without ID. Patients with both diabetes mellitus and ID were more likely than controls to be enrolled in DMP (odds ratio [OR] = 1.44, 95% confidence interval [CI] = 1.27 to 1.64). Independent of DMP enrolment, patients with chronic illness with ID were more likely than controls to have frequent consultations. Patients with both diabetes mellitus and ID and patients with both COPD and ID who were not enrolled in DMPs had more medication prescriptions than non-enrolled patients with diabetes or COPD but without ID (OR = 1.46, 95% CI = 1.10 to 1.95; OR = 1.28, 95% CI = 0.99 to 1.66, respectively). Most patients with ID and their controls enrolled in DMPs received routine examinations at similar frequencies.

CONCLUSION

Although DMPs do not specifically address the needs of patients with both chronic illness and ID, these patients do not seem underserved in the management of chronic diseases in terms of consultation, medication, and tests.

Developing a recovery-oriented intervention for people with severe mental illness and an intellectual disability: design-oriented action research

Introduction

Mild intellectual disability or borderline intellectual functioning (MID/BIF) are common in people with severe mental health problems (SMHP). Despite this, there is a lack of treatments adapted for this group of clients.

Methods

This qualitative study describes the development of a new intervention, guided by the principles of action research, for people with SMHP and MID/BIF and mental health professionals to help them talk about all aspects of the process of recovery. The intervention was developed in four cycles and in close cooperation with mental health professionals, experts by experience, other experts in the field of SMHP or MID/BIF, and clients. During all cycles there was a strong focus on the content of the intervention, exercises, understandable language, and drawings for visual support.

Results

This resulted in the intervention "Routes to Recovery," which covers both complaints and strengths, coping strategies, helpful (social) activities, and how to determine future steps in a recovery plan.

Discussion

Routes to Recovery is a first step in helping professionals and their clients with SMHP and MID/BIF to have a conversation about personal strengths and what the client needs to recover. Future research should investigate the effects of this intervention.

All-cause and cause-specific mortality among people with and without intellectual disabilities during the COVID-19 pandemic in the Netherlands: a population-based cohort study

BACKGROUND

Although high rates of COVID-19-related deaths have been reported for people with intellectual disabilities during the first 2 years of the pandemic, it is unknown to what extent the pandemic has impacted existing mortality disparities for people with intellectual disabilities. In this study, we linked a Dutch population-based cohort that contained information about intellectual disability statuses with the national mortality registry to analyse both cause-specific and all-cause mortality in people with and without intellectual disabilities, and to make comparisons with pre-pandemic mortality patterns.

METHODS

This population-based cohort study used a pre-existing cohort that included the entire Dutch adult population (everyone aged ≥18 years) on Jan 1, 2015, and identified people with presumed intellectual disabilities through data linkage. For all individuals within the cohort who died up to and including Dec 31, 2021, mortality data were obtained from the Dutch mortality register. Therefore, for each individual in the cohort, information was available about demographics (sex and date of birth), indicators of intellectual disability, if any, based on chronic care and (social) services use, and in case of death, the date and underlying cause of death. We compared the first 2 years of the COVID-19 pandemic (2020 and 2021) with the pre-pandemic period (2015-19). The primary outcomes in this study were all-cause and cause-specific mortality. We calculated rates of death and generated hazard ratios (HRs) using Cox regression analysis.

FINDINGS

At the start of follow-up in 2015, 187 149 Dutch adults with indicators of intellectual disability were enrolled and 12·6 million adults from the general population were included. Mortality from COVID-19 was significantly higher in the population with intellectual disabilities than in the general population (HR 4·92, 95% CI 4·58-5·29), with a particularly large disparity at younger ages that declined with increasing age. The overall mortality disparity during the COVID-19 pandemic (HR 3·38, 95% CI 3·29-3·47) was wider than before the pandemic (3·23, 3·17-3·29). For five disease groups (neoplasms; mental, behavioural, and nervous system; circulatory system; external causes; and other natural causes) higher mortality rates were observed in the population with intellectual disabilities during the pandemic than before the pandemic, and the pre-pandemic to during the pandemic difference in mortality rates was greater in the population with intellectual disabilities than in the general population, although relative mortality risks for most other causes remained within similar ranges compared with pre-pandemic years.

INTERPRETATION

The impact of the COVID-19 pandemic on people with intellectual disabilities has been greater than reflected by COVID-19-related deaths alone. Not only was the mortality risk from COVID-19 higher in people with intellectual disabilities than in the general population, but overall mortality disparities were also further exacerbated during the first 2 years of the pandemic. For disability-inclusive future pandemic preparedness this excess mortality risk for people with intellectual disabilities should be addressed.

FUNDING

Dutch Ministry of Health, Welfare, and Sport and Netherlands Organization for Health Research and Development.

Chronic diseases and comorbidities in adults with and without intellectual disabilities: comparative cross-sectional study in Dutch general practice

BACKGROUND

Chronic disease and comorbidity patterns in people with intellectual disabilities (ID) are more complex than in the general population. However, incomplete understanding of these differences limits care providers in addressing them.

OBJECTIVE

To compare chronic disease and comorbidity patterns in chronically ill patients with and without ID in Dutch general practice.

METHODS

In this population-based study, a multi-regional primary care database of 2018 was combined with national population data to improve identification of adults with ID. Prevalence was calculated using Poisson regression to estimate prevalence ratios and 95% confidence intervals for the highest-impact chronic diseases (ischemic heart disease (IHD), cerebrovascular disease (CVD), diabetes mellitus (DM), and chronic obstructive pulmonary disease (COPD)) and comorbidities.

RESULTS

Information from 18,114 people with ID and 1,093,995 people without ID was available. When considering age and sex, CVD (PR = 1.1), DM (PR = 1.6), and COPD (PR = 1.5) times more prevalent in people with than without ID. At younger age, people with ID more often had a chronic disease and multiple comorbidities. Males with ID most often had a chronic disease and multiple comorbidities. Comorbidities of circulatory nature were most common.

CONCLUSIONS

This study identified a younger onset of chronic illness and a higher prevalence of multiple comorbidities among people with ID in general practice than those without ID. This underlines the complexity of people with ID and chronic diseases in general practice. As this study confirmed the earlier onset of chronic diseases and comorbidities, it is recommended to acknowledge these age differences when following chronic disease guidelines.

Cancer-related mortality among people with intellectual disabilities: A nationwide population-based cohort study

Background

Concerns have been raised about access to cancer screening and the timely receipt of cancer care for people with an intellectual disability (ID). However, knowledge about cancer mortality as a potential consequence of these disparities is still limited. This study, therefore, compared cancer‐related mortality patterns between people with and without ID.

Methods

A historical cohort study (2015‐2019) linked the Dutch adult population (approximately 12 million people with an ID prevalence of 1.45%) and mortality registries. Cancer‐related mortality was identified by the underlying cause of death (according to the chapter on neoplasms in the International Classification of Diseases, Tenth Revision). Observed mortality and calculated age‐ and sex‐standardized mortality ratios (SMRs) with 95% confidence intervals (CIs) were reported.

Results

There were 11,102 deaths in the ID population (21.7% cancer‐related; n = 2408) and 730,405 deaths in the general population (31.2%; n = 228,120) available for analysis. Cancer was noted as the cause of death more often among people with ID in comparison with the general population (SMR, 1.48; 95% CI, 1.42‐1.54), particularly in the young age groups. High‐mortality cancers included cancers within the national screening program (SMRs, 1.43‐1.94), digestive cancers (SMRs, 1.24‐2.56), bladder cancer (SMR, 2.07; 95% CI, 1.61‐2.54), and cancers of unknown primary (SMR, 2.48; 95% CI, 2.06‐2.89).

Conclusions

Cancer was reported as the cause of death approximately 1.5 times more often in people with ID compared with the general population. This mortality disparity may indicate adverse effects from inequalities in screening and cancer care experienced by people with ID.

Lay Summary

People with an intellectual disability (ID) may find it challenging to participate in cancer screening or to receive timely cancer care.

To understand potential consequences in terms of mortality, this study compared cancer‐related mortality between people with and without ID in the Netherlands.

Cancer was reported as the cause of death approximately 1.5 times more often among people with ID than others.

Because large differences were found that were related to screening cancers and cancers for which the primary tumor was unknown, this study's results raise concerns about equality in screening practices and cancer care for people with ID.

Cancer is reported as the cause of death approximately 1.5 times more often in people with an intellectual disability compared with those without one. Differences are particularly noted for deaths related to cancers within the national screening program and cancers of unknown primary.