scholarly journals Incidence of osteoporosis and fragility fractures in asthma: a UK population-based matched cohort study

2020 ◽  
pp. 2001251
Author(s):  
Christos V. Chalitsios ◽  
Tricia M. McKeever ◽  
Dominick E. Shaw
Keyword(s):  
Cohort Study ◽  
General Population ◽  
Cox Regression ◽  
Inhaled Corticosteroids ◽  
Fragility Fractures ◽  
Practice Research ◽  
Research Database ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
The Impact

BackgroundOsteoporosis and fragility fractures (FF) are associated with corticosteroids which are the mainstay treatment for asthma; however, these bone comorbidities within asthma need to be better described.MethodsA matched cohort study was conducted using the Clinical Practice Research Database (CPRD). Adults with an incident asthma code were identified and matched, with up to four randomly selected people without asthma, by age, gender, and practice. Osteoporosis and FF incidence rates were calculated, and Cox regression was performed comparing hazard rates to the general population. We report the impact of age, gender, glucocorticoids, and the risk of specific fractures.ResultsPatients with asthma had a higher risk of osteoporosis (aHR=1.18, 95% CI: 1.13–1.23) and were 12% (aHR=1.12, 95% CI: 1.07–1.16) more likely to sustain FF than the general population. Age modified the effect of asthma on osteoporosis and FF, such that effect to be stronger in younger people (pinteraction<0.0001). Vertebral (aHR=1.40, 95% CI: 1.33–1.48), and forearm-wrist (aHR=1.27, 95% CI: 1.22–1.32) were the sites linked with a larger incidence. A dose-response relationship between oral corticosteroids (OCS) and osteoporosis was observed, whereas the risk of FF increased in those with 6 or more OCS courses per year. Regular use of inhaled corticosteroids (ICS) increased the risk of both bone conditions.ConclusionPatients with asthma are more likely to develop osteoporosis or sustain FF than the general population with a particular concern in younger people and those more frequently using OCS and ICS.

scholarly journals The impact of nosocomial bloodstream infections on mortality: a retrospective propensity-matched cohort study

2021 ◽  
Author(s):  
Neta Petersiel ◽  
Assa Sherman ◽  
Mical Paul
Keyword(s):  
Cohort Study ◽  
Cox Regression ◽  
Bloodstream Infections ◽  
Multidrug Resistant ◽  
Cognitive Change ◽  
Resistant Bacteria ◽  
Matched Cohort ◽  
Multidrug Resistant Bacteria ◽  
Matched Cohort Study ◽  
The Impact

Abstract Background The mortality toll of nosocomial infections drives infection control efforts. We aimed to assess the contemporary mortality associated with nosocomial bloodstream infections (BSIs). Methods Retrospective propensity-matched cohort study conducted in one hospital in Israel between 1/2010-12/2020. Adults &gt;18 years old with nosocomial BSI were matched to controls using nearest neighbor matching of the propensity score (PS) for nosocomial BSI. We assessed all-cause mortality at 30 days, 90 days and survival up to 1 year starting on the BSI day or matched hospital day among controls; and the functional and cognitive change between admission and discharge using the Norton score among patients discharged alive. Residual differences between matched groups were addressed through Cox regression for 1-year survival. Results A total of 1361 patients with nosocomial BSI were matched to 1361 patients without BSI. Matching achieved similar patient groups, with small differences remaining in the Charlson score, albumin and hemoglobin levels. At 90 days, mortality was higher among patients with BSI (odds ratio 3.36, 95% confidence intervals 2.77-4.07). Odds ratios were higher when the BSI was caused by multidrug-resistant bacteria (OR 5.22, 95% CI 3.3-8.26) and with inappropriate empirical antibiotics in the first 24 hours (OR 3.85, 2.99-4.94). Following full adjustment, the hazard ratio for 1-year mortality with nosocomial BSI was 2.28 (1.98-2.62). The Norton score declined more frequently among patients with BSI (OR 2.27, 1.81-2.86) Conclusions Nosocomial BSIs incur a highly significant mortality toll, particularly when caused by multidrug-resistant bacteria. Among hospital survivors, BSIs are associated with functional decline.

scholarly journals Chinese Herbal Medicine Is Helpful for Survival Improvement in Patients With Multiple Myeloma in Taiwan: A Nationwide Retrospective Matched-Cohort Study

2020 ◽  
Vol 19 ◽  
pp. 153473542094328
Author(s):  
Chia-Yu Huang ◽  
Mei-Yao Wu ◽  
Yu-Hung Kuo ◽  
Sio-Ian Tou ◽  
Hung-Rong Yen
Keyword(s):  
Multiple Myeloma ◽  
Cohort Study ◽  
Herbal Medicine ◽  
Propensity Score ◽  
Chinese Herbal Medicine ◽  
Cox Regression ◽  
Research Database ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
Chinese Herbal

Aim of the Study: The purpose of this study is to demonstrate that Chinese herbal medicine is beneficial for survival improvement in patients with multiple myeloma. Materials and Methods: We performed a 1:1 propensity score–matched cohort study to analyze patients with multiple myeloma diagnosed between January 1, 2002, and December 31, 2012, through the Taiwanese National Health Insurance Research Database. Patients who received Chinese herbal medicine therapy from the initial date of diagnosis of multiple myeloma to December 31, 2012, were included in the Chinese herbal medicine group. Patients who were not treated with Chinese herbal medicine during the same interval were categorized in the non-Chinese herbal medicine group. A Cox regression model was used to adjust for sex, age, comorbidities, and drug use. Hazard ratios were also compared between the 2 groups. Results: A total of 312 patients were identified after 1:1 propensity score matching. The patients had similar basic characteristics. A better survival status was found in the Chinese herbal medicine cohort (log-rank test, P < .0001). Finally, 49 patients in the Chinese herbal medicine cohort and 96 patients in the non-Chinese herbal medicine cohort died (adjusted hazard ratio = 0.35, 95% confidence interval = 0.24-0.51). The effect of survival improvement from Chinese herbal medicine in patients with multiple myeloma could be observed when prescriptions had the duration of ≥30 days. Conclusions: Our results showed that patients with multiple myeloma could benefit from Chinese herbal medicine treatment, which could improve the survival rate in Taiwan. The findings offer important ideas for further study.

scholarly journals Attributable mortality of vancomycin resistance in ampicillin-resistant Enterococcus faecium bacteremia in Denmark and the Netherlands: A matched cohort study

2021 ◽  
pp. 1-9
Author(s):  
Wouter C. Rottier ◽  
Mette Pinholt ◽  
Akke K. van der Bij ◽  
Magnus Arpi ◽  
Sybrandus N. Blank ◽  
...  
Keyword(s):  
Cohort Study ◽  
The Netherlands ◽  
Antibiotic Therapy ◽  
Enterococcus Faecium ◽  
Mortality Rates ◽  
Vancomycin Resistance ◽  
Attributable Mortality ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
The Impact

Abstract Objective: To study whether replacement of nosocomial ampicillin-resistant Enterococcus faecium (ARE) clones by vancomycin-resistant E. faecium (VRE), belonging to the same genetic lineages, increases mortality in patients with E. faecium bacteremia, and to evaluate whether any such increase is mediated by a delay in appropriate antibiotic therapy. Design: Retrospective, matched-cohort study. Setting: The study included 20 Dutch and Danish hospitals from 2009 to 2014. Patients: Within the study period, 63 patients with VRE bacteremia (36 Dutch and 27 Danish) were identified and subsequently matched to 234 patients with ARE bacteremia (130 Dutch and 104 Danish) for hospital, ward, length of hospital stay prior to bacteremia, and age. For all patients, 30-day mortality after bacteremia onset was assessed. Methods: The risk ratio (RR) reflecting the impact of vancomycin resistance on 30-day mortality was estimated using Cox regression with further analytic control for confounding factors. Results: The 30-day mortality rates were 27% and 38% for ARE in the Netherlands and Denmark, respectively, and the 30-day mortality rates were 33% and 48% for VRE in these respective countries. The adjusted RR for 30-day mortality for VRE was 1.54 (95% confidence interval, 1.06–2.25). Although appropriate antibiotic therapy was initiated later for VRE than for ARE bacteremia, further analysis did not reveal mediation of the increased mortality risk. Conclusions: Compared to ARE bacteremia, VRE bacteremia was associated with higher 30-day mortality. One explanation for this association would be increased virulence of VRE, although both phenotypes belong to the same well-characterized core genomic lineage. Alternatively, it may be the result of unmeasured confounding.

scholarly journals Differential cerebrovascular risks in glioblastoma and meningioma patients: a population-based matched cohort study in Wales (United Kingdom)

2021 ◽  
Vol 23 (Supplement_4) ◽  
pp. iv12-iv12
Author(s):  
Michael T C Poon ◽  
Kai Jin ◽  
Paul M Brennan ◽  
Jonine Figueroa ◽  
Cathie Sudlow
Keyword(s):  
Cohort Study ◽  
General Population ◽  
Ischaemic Stroke ◽  
Population Based ◽  
Parametric Models ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
Hazard Ratios ◽  
History Of

Abstract Aims There is limited evidence on cerebrovascular risks in glioblastoma and meningioma patients. We aimed to compare cerebrovascular risks of these patients with the general population. Method We used population-based routine healthcare and administrative data linkage in this matched cohort study. Cases were adult glioblastoma and meningioma patients diagnosed in Wales 2000-2014 identified in the cancer registry. Controls from cancer-free general population were matched to cases (5:1 ratio) on age (±5 years), sex and GP practice. Factors included in multivariable models were age, sex, index of multiple deprivation, hypertension, diabetes, high cholesterol, history of cardiovascular disease, and medications for cardiovascular diseases. Outcomes were fatal and non-fatal haemorrhagic and ischaemic stroke. We used flexible parametric models adjusting for confounders to calculate the hazard ratios (HR). Results Final analytic population was 16,921 participants, of which 1,340 had glioblastoma and 1,498 had meningioma. The median follow-up time was 0.5 year for glioblastoma patients, 4.9 years for meningioma patients, and 6.6 years for controls. The number of haemorrhage and ischaemic stroke was 154 and 374 in the glioblastoma matched cohort, respectively, and 180 and 569 in the meningioma matched cohort, respectively. The adjusted HRs for haemorrhagic and ischaemic stroke were 3.74 (95%CI 1.87-6.57) and 5.62 (95%CI 2.56-10.42) in glioblastoma patients, respectively, and were 2.42 (95%CI 1.58-3.52) and 1.86 (95%CI 1.54-2.23) in meningioma patients compared with their controls. Conclusion Glioblastoma and meningioma patients had higher cerebrovascular risks; these risks were even higher for glioblastoma patients. Further assessment of these potentially modifiable risks may improve survivorship.

scholarly journals 1402. Long-Term Mortality and Epilepsy in Patients After Brain Abscess: A Nationwide Population-based Matched Cohort Study

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S510-S510
Author(s):  
Jacob Bodilsen ◽  
Michael Dalager-Pedersen ◽  
Diederik van de Beek ◽  
Matthijs C Brouwer ◽  
Henrik Nielsen
Keyword(s):  
Cohort Study ◽  
Brain Abscess ◽  
Cox Regression ◽  
Population Based ◽  
Matched Cohort ◽  
Matched Cohort Study ◽  
Population Controls ◽  
New Onset

Abstract Background The long-term outcome of brain abscess is unclear. Methods We used medical registries to conduct a nationwide population-based matched cohort study to examine the long-term risks of mortality and new-onset epilepsy in patients hospitalized with brain abscess in Denmark from 1982 through 2016. Comparison cohorts from the same population individually matched on age, sex, and residence were identified, as were siblings of all study participants (Figure 1). We computed cumulative incidences and hazard rate ratios (HRRs) for mortality and new-onset epilepsy among brain abscess patients, comparison cohorts and siblings. Population and appendicitis controls had similar characteristics and prognosis why only comparisons between brain abscess patients and population controls are detailed here. Results We identified 1,384 brain abscess patients with a median follow-up time of 5.9 years (IQR 1.1–14.2). The 1-year, 2–5 year, and 6–30-year mortality of patients after brain abscess was 21%, 16% and 27% when compared with 1%, 6% and 20% for matched population controls (Figure 2). Cox regression analyses adjusted for Charlson comorbidity index score showed 1-year, 2–5 year, and 6- to 30-year HRRs of 17.5 (95% CI 13.9–22.2), 2.61 (95% CI 2.16–3.16) and 1.94 (95% CI 1.62–2.31). The mortality in brain abscess patients compared with population controls was significantly increased regardless of sex or age group except among subjects 80 years or older, and in both previously healthy individuals and immuno-compromised persons. Among the 30-day survivors of brain abscess (median follow-up 7.6 years [IQR 2.2–15.5]), new-onset epilepsy occurred in 32% compared with 2% in matched population controls. Cause-specific Cox regression analysis adjusted for stroke, head trauma, alcohol abuse, and cancer showed 1-year, 2–5-year, and 6–30-year HRRs for new-onset epilepsy of 155 (95% CI 78.8–304), 37.7 (95% CI 23.0–59.9), and 8.93 (95% CI 5.62–14.2) (Figure 3). Comparisons between sibling cohorts suggested no substantial effect of family-related factors on the long-term risk of death or epilepsy after brain abscess (Figure 4). Conclusion Brain abscess is associated with an increased long-term risk of mortality and new-onset epilepsy for several years after the acute infection. Disclosures All authors: No reported disclosures.

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