Characteristics and treatable traits of patients with chronic obstructive pulmonary disease (COPD) with and without paid employment

Disability Retirement After First Admission with Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Danish Nationwide Registry Cohort Study Using a Retrospective Follow-Up Design

Introduction

Many chronic obstructive pulmonary disease (COPD) patients below retirement age are outside the workforce. The existing knowledge about association between acute exacerbation of COPD (AECOPD) and disability retirement is limited.

Aim

The aim of this study is to explore disability retirement in COPD patients 3 years following first-ever AECOPD.

Methods

This retrospective registry-based follow-up cohort study design is based on nationwide Danish registry data. Patients admitted to the hospital for the first time between 1999 and 2017 with AECOPD and age between 35 and 59 years, active in the workforce, were included in the study. Socio-demographics, comorbidities and inhaled medication use were explored. COPD patients’ hazard ratio of disability retirement during 3-year follow-up was calculated. Cox regression was used to examine the effects of covariates on disability retirement.

Results

A total of 4032 patients were included in the study. During follow-up, 17.2% (692/4032) experienced disability retirement from the workforce. Factors associated with disability retirement were expressed as hazard ratio (95% confidence intervals): Higher age (ref. age 46–50: Age 51–55, 1.42, (1.12–1.81); age 56–59, 1.37 (1.08–1.74)); living alone (1.34 (1.14–1.56)); number of comorbidities for 1, 2, and 3 comorbidities (1.36 (1.14–1.62), 1.57 (1.19–2.07), 1.77 (1.20–2.60)); emphysema (2.01 (1.44–2.79)); depression (1.60 (1.12–2.28)); cardiac comorbidity (1.38 (1.07–1.78)); triple inhalation therapy (2.76 (2.20–3.47)); ICS + LAMA or ICS + LABA treatment (1.82 (1.48–2.23)); and ICS treatment (1.49 (1.17–1.90)). Higher educational level was associated with a significantly reduced risk of disability retirement, medium, short higher and long higher educational level, relative to low education level (0.78 (0.67–0.91), 0.63 (0.48–0.83) and 0.27 (0.12–0.60)).

Conclusion

Patients vulnerable to disability retirement are patients with markers of severe COPD, comorbidities, and social vulnerability.

Voluntary early retirement and mortality in patients with and without chronic diseases: a nationwide Danish Registry study

OBJECTIVE

This study explores how the choice of voluntary early retirement (VER) affects mortality in a population where VER is available 5 years before regular retirement age.

STUDY DESIGN

This retrospective cohort study uses a registry-based follow-up design with access to Nationwide Danish Registry Data.

METHODS

The study includes all Danish individuals who between 2000 and 2015 were part of an unemployment insurance fund and working at the time of their 60th (P60) or 62nd (P62) birthday. Those alive 1 year from their 60th or 62nd birthday were included in the mortality analysis. Individuals were registered as VER recipients if they chose the benefit within 1 year from P60 or P62. Three-year mortality likelihood following the first year from inclusion was explored for both cohorts separately. Multiple subgroups were explored in the mortality analysis, including individuals with chronic obstructive pulmonary disease (COPD), heart failure, and diabetes.

RESULTS

P60 included 627,278 individuals, and VER was chosen by 22.5%. P62 included 379,196 individuals, and VER was chosen by 33.4%. The likelihood of VER in the P60 was lower in healthy individuals (odds ratio [OR] 0.87, confidence interval [CI] 0.85-0.88) and higher in COPD (OR 1.15, CI 1.07-1.22) and heart failure patients (OR 1.15, CI 1.05-1.25). Three-year mortality was significantly higher in those choosing VER in P60 (OR 1.28, CI 1.22-1.34), which was also found for all health subgroups (healthy, OR 1.18, CI 1.07-1.30; COPD, OR 1.55, CI 1.16-2.07; heart failure, OR 1.42, CI 1.02-1.98; diabetes, OR 1.36, CI 1.12-1.65). The increased mortality risk was not found in the P62 cohort.

CONCLUSION

The choice of VER is more likely in patients with COPD and heart failure. VER in the P60 cohort is associated with an increased mortality likelihood, which was not found in the P62 cohort, which may be explained by health selection bias.

Employment Status, Readmission and Mortality After Acute Exacerbation of COPD

Introduction

The understanding of whether and to what extent employment status affects readmission and mortality is limited in patients with COPD.

Aim

To explore how employment status affects readmission and mortality after first admission to the hospital with acute exacerbation of COPD (AECOPD).

Methods

This study used Danish national registry-based data. All patients admitted for the first time to the hospital between 1999 and 2014 with a diagnosis of AECOPD, age 35–59, without a previous asthma diagnosis were included in the study. Employment status effect on 30-, 90-, and 365-day readmission and mortality was examined using logistic regression, adjusting for relevant confounders.

Results

A total of 11,850 COPD patients were included in the study of which 3563 (30%) were working, 1368 (12%) unemployed, 840 (7%) on sick leave, and 6079 (51%) receiving early retirement. Patients receiving early retirement had, compared to patients working, an adjusted increased likelihood of readmission at 30, 90, and 365 days (odds ratio (OR) 1.26 (CI^95% (1.06–1.49)), 1.33 (CI^95% (1.16–1.53)), and 1.48 (CI^95% (1.33–1.66)), respectively). An increased likelihood was also seen in unemployed at 365 days follow-up (OR 1.44 (CI^95% (1.22–1.68))). Early retirement was associated with an increased mortality at 30, 90, and 365 days (OR 1.39 (CI^95% (1.07–1.80)) 1.37 (CI^95% (1.09–1.79)) and 1.48 (CI^95% (1.25–1.75)), respectively). An increased likelihood was also seen in patients receiving sick leave (OR 1.57 (CI^95% (1.21–2.04))).

Conclusion

Patients with COPD who are not working at the time of first admission have a higher likelihood of readmission and mortality.