1.Chronic obstructive pulmonary disease 30-day readmission metric: Risk adjustment for multimorbidity and frailty.
Anthony YII ; Isaac FONG ; Sean Chee Hong LOH ; Jansen Meng-Kwang KOH ; Augustine TEE
Annals of the Academy of Medicine, Singapore 2025;54(7):419-427
INTRODUCTION:
The 30-day readmission rate for chronic obstructive pulmonary disease (COPD) is a common performance metric but may be confounded by factors unrelated to quality of care. Our aim was to assess how sociodemographic factors, multimorbidity and frailty impact 30-day readmission risk after COPD hospitalisation, and whether risk adjustment alters interpretation of temporal trends.
METHOD:
This is a retrospective analysis of administra-tive data from October 2017 to June 2023 from Changi General Hospital, Singapore. Multivariable mixed-effects logistic regression models were used to estimate unadjusted and risk-adjusted 30-day readmission odds. Covariates included age, sex, race, Charlson Comorbidity Index (CCI), Hospital Frailty Risk Score (HFRS) and year. Temporal trends in readmission risk were compared across unadjusted and adjusted models.
RESULTS:
Of the 2774 admissions, 749 (27%) resulted in 30-day readmissions. Higher CCI (CCI≥4 versus [vs] CCI=1: adjusted odds ratio [aOR] 2.00, 95% confidence interval [CI] 1.33-2.99, P=0.003; CCI 2-3 vs CCI=1: aOR 1.50, 95% CI 1.15-1.96, P=0.001) and higher HFRS (≥5 vs <5: aOR 1.29, 95% CI 1.01-1.65, P=0.04) were independently associated with increased readmission risk. While unadjusted analyses showed no significant temporal trends, the risk-adjusted model revealed a 32-35% reduction in readmission odds in 2021-2023 compared to baseline.
CONCLUSION
Multimorbidity and frailty significantly impact COPD readmissions. Risk adjustment revealed improvements in readmission risk not evident in unadjusted analyses, emphasising the importance of applying risk adjustments to ensure valid performance metrics.
Humans
;
Pulmonary Disease, Chronic Obstructive/therapy*
;
Patient Readmission/trends*
;
Male
;
Female
;
Retrospective Studies
;
Aged
;
Singapore/epidemiology*
;
Multimorbidity
;
Frailty/epidemiology*
;
Middle Aged
;
Risk Adjustment
;
Aged, 80 and over
;
Logistic Models
;
Risk Factors
2.Postoperative Complications and 30-day Readmission in Patients Older than 80 Years with Chronic Kidney Disease after Hip Fracture.
Hua-Wen ZHANG ; Lu-Lu MA ; Xue-Rong YU
Chinese Medical Sciences Journal 2025;40(3):188-196
OBJECTIVES:
This study aimed to explore the impact of chronic kidney disease (CKD) on prognosis of patients older than 80 years after hip fracture.
METHODS:
This retrospective, observational, single-center study included patients older than 80 years who underwent hip fracture operations between Feburary 2013 to June 2021 at our hospital. Patients were divided into CKD and non-GKD groups based on the estimated glomerular filtration rate (eGFR) < 60 mL/(min·1.73m2)] or not. Outcomes were the incidence of in-hospital postoperative infectious and non-infectious complications, 30-day readmission, and in-hospital death. Logistic regression analysis was used to calculate the odds ratio (OR) of CKD on these outcomes.
RESULTS:
A total of 498 patients were included, 165 in the CKD group and 333 in the non-CKD group. Eighty-seven (52.7%) CKD patients experienced 140 episodes of postoperative complications. In comparison, 114 (34.2%) non-CKD patients had 158 episodes of postoperative complications. CKD patients were more likely to have postoperative complications than non-CKD patients (OR = 2.143, 95% CI: 1.465-3.134, P < 0.001). CKD increased the risk of cardiovascular complications (OR = 2.044, 95% CI: 1.245-3.356, P = 0.004), acute kidney injury (OR = 3.401, 95% CI: 1.905-6.072, P < 0.001), delirium (OR = 2.276, 95% CI: 1.140-4.543, P = 0.024), and gastrointestinal bleeding (OR = 4.151, 95% CI: 1.025-16.812, P = 0.031). The transfusion rate (OR = 2.457, 95% CI: 1.668-3.618, P < 0.001) and incidence of 30-day readmission (OR = 2.426, 95% CI:1.203-4.892, P = 0.011) in CKD patients were significantly higher than those in patients without CKD.
CONCLUSIONS
CKD is associated with poor postoperative outcomes in geriatric hip fracture patients. Special attention should be paid to patients with CKD.
Humans
;
Renal Insufficiency, Chronic/physiopathology*
;
Aged, 80 and over
;
Postoperative Complications/epidemiology*
;
Hip Fractures/complications*
;
Male
;
Female
;
Patient Readmission/statistics & numerical data*
;
Retrospective Studies
;
Glomerular Filtration Rate
3.Risk factors and construction of a risk prediction model for readmission due to hyperbilirubinemia in neonates with ABO hemolytic disease of the newborn.
Pei-Xian YUE ; Hong-Ling CAO ; Rong LI
Chinese Journal of Contemporary Pediatrics 2025;27(7):834-841
OBJECTIVES:
To investigate the readmission rate and risk factors for readmission due to hyperbilirubinemia in neonates with ABO hemolytic disease of the newborn (ABO-HDN), and to construct a risk prediction model for readmission.
METHODS:
Neonates diagnosed with hyperbilirubinemia due to ABO-HDN and hospitalized in the neonatal department between January 2021 and December 2023 were enrolled. Based on readmission status, neonates were divided into a readmission group and a control group. Clinical characteristics related to hyperbilirubinemia and risk factors for readmission were analyzed. Subsequently, a prediction model for readmission was constructed, and its predictive performance was evaluated.
RESULTS:
A total of 483 neonates with hyperbilirubinemia due to ABO-HDN were included. The readmission rate was 13.0% (63 cases). Multivariate logistic regression analysis revealed that earlier age at phototherapy initiation, longer duration of phototherapy, occurrence of rebound hyperbilirubinemia, and higher levels of serum total bilirubin and indirect bilirubin at discharge were independent risk factors for hyperbilirubinemia readmission in ABO-HDN neonates (OR=2.373, 4.840, 6.475, 5.033, 1.336 respectively; P<0.05). A risk prediction model for ABO-HDN hyperbilirubinemia readmission was constructed based on these 5 risk factors. Model evaluation demonstrated good predictive performance.
CONCLUSIONS
Age at phototherapy initiation, duration of phototherapy, occurrence of rebound hyperbilirubinemia, and serum total bilirubin and indirect bilirubin levels at discharge are significant influencing factors for readmission due to hyperbilirubinemia in neonates with ABO-HDN. Close monitoring during discharge planning and follow-up management for such neonates is crucial to reduce readmission rates.
Humans
;
Infant, Newborn
;
ABO Blood-Group System
;
Risk Factors
;
Patient Readmission
;
Male
;
Female
;
Logistic Models
;
Hyperbilirubinemia, Neonatal/therapy*
;
Erythroblastosis, Fetal
;
Bilirubin/blood*
4.Effectiveness of Xuanshen Yishen Decoction on Intensive Blood Pressure Control: Emulation of a Randomized Target Trial Using Real-World Data.
Xiao-Jie WANG ; Yuan-Long HU ; Jia-Ming HUAN ; Shi-Bing LIANG ; Lai-Yun XIN ; Feng JIANG ; Zhen HUA ; Zhen-Yuan WANG ; Ling-Hui KONG ; Qi-Biao WU ; Yun-Lun LI
Chinese journal of integrative medicine 2025;31(8):677-684
OBJECTIVE:
To investigate the effectiveness of Xuanshen Yishen Decoction (XYD) in the treatment of hypertension.
METHODS:
Hospital electronic medical records from 2019-2023 were utilized to emulate a randomized pragmatic clinical trial. Hypertensive participants were eligible if they were aged ⩾40 years with baseline systolic blood pressure (BP) ⩾140 mm Hg. Patients treated with XYD plus antihypertensive regimen were assigned to the treatment group, whereas those who followed only antihypertensive regimen were assigned to the control group. The primary outcome assessed was the attainment rate of intensive BP control at discharge, with the secondary outcome focusing on the 6-month all-cause readmission rate.
RESULTS:
The study included 3,302 patients, comprising 2,943 individuals in the control group and 359 in the treatment group. Compared with the control group, a higher proportion in the treatment group achieved the target BP for intensive BP control [8.09% vs. 17.5%; odds ratio (OR)=2.29, 95% confidence interval (CI)=1.68 to 3.13; P<0.001], particularly in individuals with high homocysteine levels (OR=3.13; 95% CI=1.72 to 5.71; P<0.001; P for interaction=0.041). Furthermore, the 6-month all-cause readmission rate in the treatment group was lower than in the control group (hazard ratio=0.58; 95% CI=0.36 to 0.91; P=0.019), and the robustness of the results was confirmed by sensitivity analyse.
CONCLUSIONS
XYD could be a complementary therapy for intensive BP control. Our study offers real-world evidence and guides the choice of complementary and alternative therapies. (Registration No. ChiCTR2400086589).
Adult
;
Aged
;
Female
;
Humans
;
Male
;
Middle Aged
;
Antihypertensive Agents/pharmacology*
;
Blood Pressure/drug effects*
;
Drugs, Chinese Herbal/pharmacology*
;
Hypertension/physiopathology*
;
Patient Readmission
;
Treatment Outcome
5.Predictors of 30-day unplanned hospital readmissions among maintenance dialysis patients
Chicki Florette C. Uy ; Sheryll Anne R. Manalili ; Lynn A. Gomez
Acta Medica Philippina 2024;58(5):43-51
Background and Objectives:
Patients on dialysis are twice as likely to have early readmissions. This study aimed to identify risk factors for 30-day unplanned readmission among patients on maintenance dialysis in a tertiary hospital.
Methods:
We conducted a retrospective, unmatched, case-control study. Data were taken from patients on
maintenance hemodialysis admitted in the University of the Philippines–Philippine General Hospital (UP-PGH)
between January 2018 and December 2020. Patients with 30-day readmission were included as cases and patients with >30-day readmissions were taken as controls. Multivariable regression with 30-day readmission as the outcome was used to identify significant predictors of early readmission.
Results:
The prevalence of 30-day unplanned readmission among patients on dialysis is 36.96%, 95%CI [31.67,
42.48]. In total, 119 cases and 203 controls were analyzed. Two factors were significantly associated with early
readmission: the presence of chronic glomerulonephritis [OR 2.35, 95% CI 1.36 to 4.07, p-value=0.002] and number of comorbidities [OR 1.34, 95% CI 1.12 to 1.61, p-value=0.002]. The most common reasons for early readmission are infection, anemia, and uremia/underdialysis.
Conclusion
Patients with chronic glomerulonephritis and multiple comorbidities have significantly increased odds of early readmission. Careful discharge planning and close follow up of these patients may reduce early readmissions.
Patient Readmission
;
Dialysis
;
Risk Factors
6.Factors associated with readmission after long-term administration of tolvaptan in patients with congestive heart failure.
Shoko YAMASHITA ; Miki TAKENAKA ; Masayuki OHBAYASHI ; Noriko KOHYAMA ; Tatsuya KURIHARA ; Tomiko SUNAGA ; Hisaaki ISHIGURO ; Mari KOGO
Singapore medical journal 2024;65(11):614-623
INTRODUCTION:
We investigated the factors associated with readmission in patients with congestive heart failure (HF) receiving long-term administration of tolvaptan (TLV) to support treatment decisions for HF.
METHODS:
This retrospective cohort study included 181 patients with congestive HF who received long-term administration of TLV. Long-term administration of TLV was defined as the administration of TLV for 60 days or longer. The outcome was a readmission event for worsening HF within 1 year after discharge. Significant factors associated with readmission were selected using multivariate analysis. To compare the time to readmission using significant factors extracted in a multivariate analysis, readmission curves were constructed using the Kaplan-Meier method and analysed using the log-rank test.
RESULTS:
The median age was 78 years (range, 38-96 years), 117 patients (64.6%) were males, and 77 patients (42.5%) had a hospitalisation history of HF. Readmission for worsening HF within 1 year after long-term TLV treatment occurred in 62 patients (34.3%). In the multivariate analysis, estimated glomerular filtration rate (eGFR) <30 mL/min/1.73 m 2 (odds ratio, 3.22; 95% confidence interval, 1.661-6.249; P = 0.001) was an independent significant factor. When eGFR at discharge was divided into two groups (eGFR < 30 vs. eGFR ≥ 30), readmission rates within 1 year were 53.3% vs. 25.4%, respectively ( P = 0.001).
CONCLUSION
We revealed that eGFR was strongly associated with readmission in patients with HF who received long-term administration of TLV. Furthermore, we showed that eGFR is an important indicator in guiding treatment of HF in patients receiving TLV.
Humans
;
Tolvaptan/therapeutic use*
;
Heart Failure/drug therapy*
;
Male
;
Female
;
Patient Readmission/statistics & numerical data*
;
Aged
;
Retrospective Studies
;
Aged, 80 and over
;
Middle Aged
;
Glomerular Filtration Rate
;
Adult
;
Antidiuretic Hormone Receptor Antagonists/therapeutic use*
;
Risk Factors
;
Kaplan-Meier Estimate
;
Multivariate Analysis
7.A year of COVID-19: effects of a global pandemic on a hip fracture bundled care protocol.
Khai Cheong WONG ; Kenny Xian Khing TAY ; Suang Bee KOH ; Tet Sen HOWE
Singapore medical journal 2024;65(12):669-673
INTRODUCTION:
Our aim was to analyse how the coronavirus disease 2019 (COVID-19) pandemic affects a hip fracture bundled care protocol. We hypothesised that key performance indicators, but not short-term outcomes, may be adversely affected.
METHODS:
Patients admitted under a hip fracture bundled care protocol were divided into two arms: 'COVID' group included patients admitted in 2020 during the COVID-19 pandemic and 'PRE-COVID' group included patients admitted in 2019. We retrospectively analysed time to admission, time to surgery, length of stay, discharge disposition, as well as rates of 30-day revision surgery, 30-day readmission and inpatient mortality.
RESULTS:
There were 307 patients in the PRE-COVID group and 350 patients in the COVID group. There was no significant difference in terms of gender, age and type of hip fracture. The COVID group had a higher proportion of American Society of Anesthesiologists classification III and IV patients (61.4% vs. 50.2% in the PRE-COVID group; P = 0.004). In the COVID group, similar proportion of patients were admitted to the ward within 4 h, but the mean time to surgery was longer (71.8 ± 73.0 h vs. 60.4 ± 72.8 h in the PRE-COVID group; P = 0.046) and few patients underwent operations within 48 h (41.7% vs. 60.3% in the PRE-COVID group; P < 0.001). Mean postoperative length of stay, discharge disposition, as well as rates of inpatient mortality, 30-day revision surgery and 30-day readmission were similar.
CONCLUSION
The volume of hip fractures during the COVID-19 pandemic remained unchanged, although patients admitted during the COVID-19 pandemic appeared to be more deconditioned. Nevertheless, having robust protocols and staff familiar with hip fracture treatment can preserve short-term outcomes for this group of patients, even with strict isolation measures in place during a pandemic.
Humans
;
COVID-19/epidemiology*
;
Male
;
Female
;
Hip Fractures/epidemiology*
;
Aged
;
Retrospective Studies
;
Aged, 80 and over
;
Length of Stay
;
Patient Readmission/statistics & numerical data*
;
Pandemics
;
SARS-CoV-2
;
Patient Care Bundles
;
Hospital Mortality
;
Clinical Protocols
;
Time-to-Treatment
;
Reoperation
8.Factors associated with readmission within three months of surgery for gastric cancer and their long-term effects on patients' nutritional status and quality of life.
Hong Xia YAN ; Fang HE ; Ying Tai CHEN ; Chun Guang GUO ; Jian Jian WEI ; Dong Bing ZHAO
Chinese Journal of Gastrointestinal Surgery 2023;26(2):191-198
Objective: To analyze the factors associated with readmission within three months of surgery for gastric cancer and the impact of readmission on patients' long-term nutritional status and quality of life. Methods: This was a prospective cohort study comprising patients who underwent radical gastrectomy in the Department of Pancreatic and Gastric Surgery, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences from October 2018 to August 2019. Patients who failed to complete postoperative follow-up, whose body mass index (BMI) could not be accurately estimated, or who were unable to complete a quality-of-life questionnaire were excluded. The patients were followed up for 12 months. Time to, cause(s) of, and outcomes of readmission were followed up 1, 2 and 3 months postoperatively. BMI was followed up 1, 3, 6 and 12 months postoperatively. Results of blood tests were collected and patients' nutritional status and quality of life were assessed 12 months postoperatively. Nutritional status was evaluated by BMI, hemoglobin, albumin, and total lymphocyte count. Quality of life was evaluated using the European Organization for Research in the Treatment of Cancer (EORTC) Quality of Life scale. The higher the scores for global health and functional domains, the better the quality of life, whereas the higher the score in the symptom domain, the worse the quality of life. Results: The study cohort comprised 259 patients with gastric cancer, all of whom were followed up for 3 months and 236 of whom were followed up for 12 months. Forty-four (17.0%) patients were readmitted within 3 months. The commonest reasons for readmission were gastrointestinal dysfunction (16 cases, 36.3%), intestinal obstruction (8 cases, 18.2%), and anastomotic stenosis (8 cases, 18.2%). Logistic regression analysis showed that preoperative Patient-Generated Subjective Global Assessment score ≥ 4 points (OR=1.481, 95% CI: 1.028‒2.132), postoperative complications (OR=3.298, 95%CI:1.416‒7.684) and resection range (OR=1.582, 95% CI:1.057‒2.369) were risk factors for readmission within 3 months of surgery. Compared with patients who had not been readmitted 12 months after surgery, patients who were readmitted within 3 months of surgery tended to have greater decreases in their BMI [-2.36 (-5.13,-0.42) kg/m2 vs. -1.73 (-3.33,-0.33) kg/m2, Z=1.850, P=0.065), significantly lower hemoglobin and albumin concentrations [(122.1±16.6) g/L vs. (129.8±18.4) g/L, t=2.400, P=0.017]; [(40.9±5.0) g/L vs. (43.4±3.3) g/L, t=3.950, P<0.001], and significantly decreased global health scores in the quality of life assessment [83 (67, 100) vs. 100 (83, 100), Z=2.890,P=0.004]. Conclusion: Preoperative nutritional risk, total or proximal radical gastrectomy, and complications during hospitalization are risk factors for readmission within 3 months of surgery for gastric cancer. Perioperative management and postoperative follow-up should be more rigorous. Readmission within 3 months after surgery may be associated with a decline in long-term nutritional status and quality of life. Achieving improvement in long-term nutritional status and quality of life requires tracking of nutritional status, timely evaluation, and appropriate interventions in patients who need readmission.
Humans
;
Nutritional Status
;
Quality of Life
;
Patient Readmission
;
Stomach Neoplasms/complications*
;
Prospective Studies
;
Postoperative Complications/etiology*
;
Gastrectomy/adverse effects*
;
Retrospective Studies
10.Correlation between traditional Chinese medicine and reduced risk of readmission in rheumatoid arthritis patients with hypoproteinemia:a retrospective cohort study.
Qin ZHOU ; Jian LIU ; Yan-Qiu SUN ; Xiao-Lu CHEN ; Xian-Heng ZHANG ; Xiang DING
China Journal of Chinese Materia Medica 2023;48(8):2241-2248
This study aimed to explore the correlation between traditional Chinese medicine(TCM) and reduced risk of readmission in patients having rheumatoid arthritis with hypoproteinemia(RA-H). A retrospective cohort study was conducted on 2 437 rheumatoid arthritis patients in the information system database of the First Affiliated Hospital of Anhui University of Chinese Medicine from 2014 to 2021, and 476 of them were found to have hypoproteinemia. The patients were divided into TCM users and non-TCM users by propensity score matching. Exposure was defined as the use of oral Chinese patent medicine or herbal decoction for ≥1 month. Cox regression analysis was performed to explore the risk factors of clinical indicators of rheumatoid arthritis. Additionally, the use of TCM during hospitalization was analyzed, and analysis of association rules was conducted to investigate the correlation between TCM, improvement of indicators and readmission of patients. Kaplan-Meier survival curve was plotted to compare the readmission rate of TCM users and non-TCM users. It was found the readmission rate of RA-H patients was significantly higher than that of RA patients. By propensity score matching, 232 RA-H patients were divided into TCM group(116 cases) and non-TCM group(116 cases). Compared with the conditions in the non-TCM group, the readmission rate of the TCM group was lowered(P<0.01), and the readmission rate of middle-aged and elderly patients was higher than that of young patients(P<0.01). Old age was a risk factor for readmission of RA-H patients, while TCM, albumin(ALB) and total protein(TP) were the protective factors. During hospitalization, the TCMs used for RA-H patients were mainly divided into types of activating blood and resolving stasis, relaxing sinew and dredging collaterals, clearing heat and detoxifying, and invigorating spleen and resolving dampness. The improvement of rheumatoid factor(RF), immunoglobulin G(IgG), erythrocyte sedimentation rate(ESR), C-reactive protein(CRP) and ALB was closely related to TCM. On the basis of western medicine treatment, the application of TCM could reduce the readmission rate of RA-H patients, and longer use of TCM indicated lower readmission rate.
Middle Aged
;
Aged
;
Humans
;
Medicine, Chinese Traditional
;
Drugs, Chinese Herbal/therapeutic use*
;
Retrospective Studies
;
Patient Readmission
;
Arthritis, Rheumatoid/drug therapy*
;
Hypoproteinemia/drug therapy*


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