Epidemiology of Major Lower Extremity Amputations in Individuals With Diabetes in Austria, 2014-2017: A Retrospective Analysis of Health Insurance Database

Abstract Background: Previous data show a high incidence of major lower extremity amputations (LEA) in Austria. Moreover, recent data on the epidemiology of major LEA are sparse in the Country. This study estimated the incidence and mortality rates of major LEA and assessed risk factors of post major LEA mortality in individuals with diabetes.Methods: A retrospective cohort analysis of 507,180 individuals with diabetes enrolled in the Austrian Health Insurance between 2014 and 2017 was performed. Crude and age-standardized rates of major LEA (hip, femur, knee, lower leg) were estimated by extracting their procedure codes from the database. Short- (30-day, 90-day) and long-term (1-year, 5-year) all-cause cumulative mortality after major LEA was estimated from the date of amputation till the date of death. Poisson regression was performed to compare rates by characteristics and assess the annual trend. The Cox-regression was performed to identify significant risk factors of all-cause mortality after major LEA.Results: A total of 2,165 individuals with diabetes underwent major LEA between 2014 and 2017. The mean age was amputees was 73.0 ±11.3 years, 62.7% were males, and 87.3% had a peripheral vascular disease (PVD). The overall age-standardized rate was 6.44 per 100,000 population. The rate increased with age (p<0.001) and was higher (p<0.001) in males (9.38) than females (5.66). The rate was 5.71 in 2014, 6.86 in 2015, 6.71 in 2016, and 6.66 in 2017, with an insignificant annual change of 3% (p=0.825). The cumulative 30-day mortality was 13.5%, 90-day was 22.0%, 1-year was 34.4%, and 5-year was 66.7%. Age, male sex, above-knee amputation, Charlson index, and heart failure were significantly associated with both short- and long-term mortality. Cancer, dementia, heart failure, PVD, and renal disease were only associated with long-term mortality.Conclusions: The rate of major LEA remained stable between 2014 and 2017 in Austria. Short and long-term mortality rates were considerably high after major LEA. Old age, male sex, above-knee amputations, heart failure, and Charlson Index were significant predictors of both short- and long-term mortality, whereas, comorbidities such as cancer, dementia, PVD, and renal disease were significant predictors of long-term mortality only.

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Improved but still high short- and long-term mortality rates after myocardial infarction in patients with diabetes mellitus: a time-trend report from the Swedish Register of Information and Knowledge about Swedish Heart Intensive Care Admission

Heart ◽

10.1136/hrt.2006.097956 ◽

2006 ◽

Vol 93 (12) ◽

pp. 1577-1583 ◽

Cited By ~ 95

Author(s):

A. Norhammar ◽

J. Lindback ◽

L. Ryden ◽

L. Wallentin ◽

U. Stenestrand ◽

...

Keyword(s):

Diabetes Mellitus ◽

Myocardial Infarction ◽

Intensive Care ◽

Time Trend ◽

Mortality Rates ◽

Intensive Care Admission ◽

Patients With Diabetes ◽

Short And Long Term ◽

Long Term Mortality

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Right ventricular dysfunction as an independent predictor of short- and long-term mortality in patients with heart failure

European Journal of Heart Failure ◽

10.1016/j.ejheart.2007.03.001 ◽

2007 ◽

Vol 9 (6-7) ◽

pp. 610-616 ◽

Cited By ~ 161

Author(s):

Jesper Kjaergaard ◽

Dilek Akkan ◽

Kasper Karmark Iversen ◽

Lars Køber ◽

Christian Torp-Pedersen ◽

...

Keyword(s):

Heart Failure ◽

Right Ventricular ◽

Ventricular Dysfunction ◽

Independent Predictor ◽

Right Ventricular Dysfunction ◽

Patients With Heart Failure ◽

Short And Long Term ◽

Long Term Mortality

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Long-term mortality rates and associated risk factors following primary and revision knee arthroplasty

The Bone & Joint Journal ◽

10.1302/0301-620x.104b1.bjj-2021-0753.r1 ◽

2022 ◽

Vol 104-B (1) ◽

pp. 45-52

Author(s):

Liam Zen Yapp ◽

Nick D. Clement ◽

Matthew Moran ◽

Jon V. Clarke ◽

A. Hamish R. W. Simpson ◽

...

Keyword(s):

General Population ◽

Knee Arthroplasty ◽

Mortality Rates ◽

Factors Associated ◽

Revision Knee Arthroplasty ◽

Risk Of Mortality ◽

Increased Risk ◽

Male Sex ◽

Long Term Mortality

Aims The aim of this study was to determine the long-term mortality rate, and to identify factors associated with this, following primary and revision knee arthroplasty (KA). Methods Data from the Scottish Arthroplasty Project (1998 to 2019) were retrospectively analyzed. Patient mortality data were linked from the National Records of Scotland. Analyses were performed separately for the primary and revised KA cohorts. The standardized mortality ratio (SMR) with 95% confidence intervals (CIs) was calculated for the population at risk. Multivariable Cox proportional hazards were used to identify predictors and estimate relative mortality risks. Results At a median 7.4 years (interquartile range (IQR) 4.0 to 11.6) follow-up, 27.8% of primary (n = 27,474/98,778) and 31.3% of revision (n = 2,611/8,343) KA patients had died. Both primary and revision cohorts had lower mortality rates than the general population (SMR 0.74 (95% CI 0.73 to 0.74); p < 0.001; SMR 0.83 (95% CI 0.80 to 0.86); p < 0.001, respectively), which persisted for 12 and eighteight years after surgery, respectively. Factors associated with increased risk of mortality after primary KA included male sex (hazard ratio (HR) 1.40 (95% CI 1.36 to 1.45)), increasing socioeconomic deprivation (HR 1.43 (95% CI 1.36 to 1.50)), inflammatory polyarthropathy (HR 1.79 (95% CI 1.68 to 1.90)), greater number of comorbidities (HR 1.59 (95% CI 1.51 to 1.68)), and periprosthetic joint infection (PJI) requiring revision (HR 1.92 (95% CI 1.57 to 2.36)) when adjusting for age. Similarly, male sex (HR 1.36 (95% CI 1.24 to 1.49)), increasing socioeconomic deprivation (HR 1.31 (95% CI 1.12 to 1.52)), inflammatory polyarthropathy (HR 1.24 (95% CI 1.12 to 1.37)), greater number of comorbidities (HR 1.64 (95% CI 1.33 to 2.01)), and revision for PJI (HR 1.35 (95% 1.18 to 1.55)) were independently associated with an increased risk of mortality following revision KA when adjusting for age. Conclusion The SMR of patients undergoing primary and revision KA was lower than that of the general population and remained so for several years post-surgery. However, approximately one in four patients undergoing primary and one in three patients undergoing revision KA died within tenten years of surgery. Several patient and surgical factors, including PJI, were associated with the risk of mortality within ten years of primary and revision surgery. Cite this article: Bone Joint J 2022;104-B(1):45–52.

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Survival and factors predicting mortality after major and minor lower-extremity amputations among patients with diabetes: a population-based study using health information systems

BMJ Open Diabetes Research & Care ◽

10.1136/bmjdrc-2020-001355 ◽

2020 ◽

Vol 8 (1) ◽

pp. e001355

Author(s):

Silvia Cascini ◽

Nera Agabiti ◽

Marina Davoli ◽

Luigi Uccioli ◽

Marco Meloni ◽

...

Keyword(s):

Risk Factors ◽

Lower Extremity ◽

Renal Disease ◽

High Mortality ◽

Chronic Renal Disease ◽

Mortality Rates ◽

Population Based ◽

Term Survival ◽

Factors Associated ◽

Patients With Diabetes

IntroductionThe aim of the study was to identify the sociodemographic and clinical factors associated with death after the first lower-extremity amputation (LEA), minor and major separately, using data from regional health administrative databases.Research design and methodsWe carried out a population-based cohort study including patients with diabetes residing in the Lazio region and undergoing a primary amputation in the period 2012–2015. Each individual was followed up for at least 2 years. Kaplan-Meier analysis was used to evaluate long-term survival; Cox proportional regression models were applied to identify factors associated with all-cause mortality.ResultsThe cohort included 1053 patients, 72% were male, 63% aged ≥65 years, and 519 (49%) died by the end of follow-up. Mortality rates at 1 and 4 years were, respectively, 33% and 65% for major LEA and 18% and 45% for minor LEA. Significant risk factors for mortality were age ≥65, diabetes-related cardiovascular complications, and chronic renal disease for patients with minor LEA, and age ≥75 years, chronic renal disease and antidepressant drug consumption for subjects with major LEA.ConclusionsThe present study confirms the high mortality rates described in patients with diabetes after non-traumatic LEA. It shows differences between minor and major LEA in terms of mortality rates and related risk factors. The study highlights the role of depression as specific risk factor for death in patients with diabetes after major LEA and suggests including its definition and management in strategies to reduce the high mortality rate observed in this group of patients.

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