scholarly journals Clinical Predictors Implicated in the Incidence of Acute Pyelonephritis during the Antepartum Period: A Population-Based Cohort Study

2019 ◽  
Vol 45 (2) ◽  
pp. 297-306
Author(s):  
Gang Jee Ko ◽  
Shin Young Ahn ◽  
Ji Eun Kim ◽  
Eun Jung Cho ◽  
Kyu-Min Lee ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Acute Pyelonephritis ◽  
Clinical Characteristics ◽  
Multivariate Logistic Regression Analysis ◽  
Population Based ◽  
Health Examination ◽  
Clinical Predictors ◽  
Increased Risk ◽  
High Fasting Glucose

Introduction: Acute pyelonephritis (APN) is a common infection during pregnancy that increases the risk of unfavorable maternal and fetal outcomes. However, it has not been clearly elucidated which demographic and clinical characteristics are associated with the incidence of APN during pregnancy. Objective: This population-based cohort study aimed to determine the risk factors for APN during pregnancy. Methods: Using the database of the Health Insurance Review and Assessment Service of South Korea, we enrolled Korean women who delivered infants between 2010 and 2014 in Korea and had complete health examination records within 1 year of pregnancy. We performed multivariate logistic regression analysis to evaluate the risk factors for APN during pregnancy. Results: Of 370,248 women, 2,526 (0.7% of the total participants) were treated for APN while in hospitalization during pregnancy. Younger age, history of previous APN within 1 year of pregnancy, and abnormal results of health examination before pregnancy, such as high fasting glucose level (>100 mg/dL) and proteinuria, were associated with an increased risk of APN during pregnancy. Conclusion: Certain maternal demographic and clinical characteristics were associated with the incidence of APN during pregnancy, and these should be monitored closely during antenatal care.

scholarly journals Ethnic Disparities in Stillbirth Risk in Yunnan, China: a prospective cohort study, 2010-2018

2020 ◽  
Author(s):  
Yanpeng Wu ◽  
Jianhong Pan ◽  
Dong Han ◽  
Lixin Li ◽  
Yanfei Wu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Preterm Birth ◽  
Mainland China ◽  
Ethnic Disparities ◽  
Sociodemographic Factors ◽  
Population Based ◽  
Ethnic Disparity ◽  
Health Examination ◽  
Table Analysis

Abstract Background: Racial and ethnic disparities in stillbirth risk had been documented in most western countries, but it remains unknown in China. This study was to determine whether exist ethnic disparities in stillbirth risk in mainland China.Methods: Pregnancy outcomes and ethnicity data were obtained from the National Free Preconception Health Examination Project (NEPHEP), a nationwide prospective population-based cohort study conducted in Yunnan China from 2010-2018. The Han majority and other four main minorities including Yi, Dai, Miao, Hani were investigated in the analysis. The stillbirth hazards were estimated by life-table analysis. The excess stillbirth risk (ESR) was computed for Chinese minorities using multivariable logistic regression.Results: Compared with other four minorities, women in Han majority were more likely to more educated, less multiparous, and less occupied in agriculture. The pattern of stillbirth hazard of Dai women across different gestation intervals were found to be different from other ethnic groups, especially in 20-23 weeks with 3.2 times higher than Han women. The ESR of the Dai, Hani, Miao, and Yi were 45.05%, 18.70%, -4.17% and 12.28%, respectively. Adjusted for maternal age, education, birth order and other general risk factors, the ethnic disparity still persisted between Dai women and Han women. Adjusted for preterm birth further (gestation age <37 weeks) can reduce 16.91% ESR of Dai women and made the disparity insignificant. Maternal diseases and congenital anomalies explained little for ethnic disparities.Conclusions: We identified the ethnic disparity in stillbirth risk between Dai women and Han women. General risk factors including sociodemographic factors and maternal diseases explained little. Considerable ethnic disparities can be attributed to preterm birth.

scholarly journals Associations Between Malignancy and Cardiovascular Complications Following Emergency Laparotomy – a Retrospective Cohort Study

2020 ◽  
Author(s):  
Rasmus Peuliche Vogelsang ◽  
Jacob Hartmann Søby ◽  
Mai-Britt Tolstrup ◽  
Jakob Burcharth ◽  
Sarah Ekeløf ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Malignant Disease ◽  
Multivariate Logistic Regression Analysis ◽  
Cardiovascular Complications ◽  
Emergency Laparotomy ◽  
Asa Score ◽  
Increased Risk

Abstract Background Several studies have shown a possible causal relationship between the occurrence of systemic inflammation in patients with malignant disease and increased risk of cardiovascular events. Our objective was to estimate the association between malignant disease and postoperative cardiovascular complications. Secondarily, we aimed to identify risk factors for postoperative cardiovascular complications. Methods We conducted a retrospective cohort study of all patients ≥ 18 years undergoing emergency laparotomy between 2010 and 2016 at the Department of Surgery at Zealand University Hospital, Denmark. Complications were graded according to the Clavien-Dindo (CD) classification of surgical complications. A multivariate logistic regression analysis was performed to estimate the association between malignant disease and cardiovascular complications within 30 days of emergency laparotomy and to identify other risk factors for postoperative cardiovascular complications after emergency laparotomy. Results We identified 1188 patients ≥ 18 years undergoing emergency laparotomy between 2010 and 2016, in which 254 (21%) had malignant disease. Within 30 days of emergency laparotomy, 89 (9.5%) of patients without malignancy died, as compared with 45 (18%) of patients with malignancy (p < 0.001). Severe cardiovascular complication graded CD 3–5 occurred in 93 (8%) of all patients within 30 days of emergency laparotomy. We found no association between malignancy and postoperative cardiovascular complications. Increasing age and ASA physical status classification system (ASA) score ≥ III were the only independent risk factors of cardiovascular complications graded CD 3–5. Conclusions Malignancy was not associated with postoperative cardiovascular complications after emergency laparotomy. Risk factors for major cardiovascular complications after emergency abdominal surgery were age and ASA score ≥ III.

scholarly journals Risk factors for death among children aged 5–14 years hospitalised with pneumonia: a retrospective cohort study in Kenya

2019 ◽  
Vol 4 (5) ◽  
pp. e001715 ◽  
Author(s):  
Liana Macpherson ◽  
Morris Ogero ◽  
Samuel Akech ◽  
Jalemba Aluvaala ◽  
David Gathara ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Clinical Characteristics ◽  
Univariate Analysis ◽  
Older Age ◽  
Who Criteria ◽  
Risk Of Death ◽  
Increased Risk

IntroductionThere were almost 1 million deaths in children aged between 5 and 14 years in 2017, and pneumonia accounted for 11%. However, there are no validated guidelines for pneumonia management in older children and data to support their development are limited. We sought to understand risk factors for mortality among children aged 5–14 years hospitalised with pneumonia in district-level health facilities in Kenya.MethodsWe did a retrospective cohort study using data collected from an established clinical information network of 13 hospitals. We reviewed records for children aged 5–14 years admitted with pneumonia between 1 March 2014 and 28 February 2018. Individual clinical signs were examined for association with inpatient mortality using logistic regression. We used existing WHO criteria (intended for under 5s) to define levels of severity and examined their performance in identifying those at increased risk of death.Results1832 children were diagnosed with pneumonia and 145 (7.9%) died. Severe pallor was strongly associated with mortality (adjusted OR (aOR) 8.06, 95% CI 4.72 to 13.75) as were reduced consciousness, mild/moderate pallor, central cyanosis and older age (>9 years) (aOR >2). Comorbidities HIV and severe acute malnutrition were also associated with death (aOR 2.31, 95% CI 1.39 to 3.84 and aOR 1.89, 95% CI 1.12 to 3.21, respectively). The presence of clinical characteristics used by WHO to define severe pneumonia was associated with death in univariate analysis (OR 2.69). However, this combination of clinical characteristics was poor in discriminating those at risk of death (sensitivity: 0.56, specificity: 0.68, and area under the curve: 0.62).ConclusionChildren >5 years have high inpatient pneumonia mortality. These findings also suggest that the WHO criteria for classification of severity for children under 5 years do not appear to be a valid tool for risk assessment in this older age group, indicating the urgent need for evidence-based clinical guidelines for this neglected population.

scholarly journals Incidence, Risk Factors, and Outcomes of Neonatal Renal Vein Thrombosis in Ontario: Population-Based Cohort Study

Kidney360 ◽  
2020 ◽  
Vol 1 (7) ◽  
pp. 640-647 ◽  
Author(s):  
Allison C. Ouellette ◽  
Elizabeth K. Darling ◽  
Branavan Sivapathasundaram ◽  
Glenda Babe ◽  
Richard Perez ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Renal Vein Thrombosis ◽  
Population Based ◽  
Long Term Outcomes ◽  
Vein Thrombosis ◽  
Increased Risk ◽  
Neonatal Renal Vein Thrombosis

BackgroundThere are limited data at a population level on the burden, risk factors, and long-term outcomes of neonatal renal vein thrombosis (nRVT). We conducted a population-based cohort study to understand the epidemiology and outcomes of nRVT over a 25-year period in Ontario.MethodsUsing linked administrative health databases, all hospitalized neonates ≤28 days born in Ontario between 1992 and 2016 with nRVT were identified. The primary outcome was to calculate the incidence of nRVT and trend over time in Ontario. We also determined the risk factors associated with nRVT as well as the risk of long-term outcomes after nRVT, including CKD, ESKD, all-cause mortality, and hypertension (HTN) compared with the healthy neonatal population without nRVT.ResultsThe annual incidence rate of nRVT was 2.6 per 100,000 live births (n=85). Presence of respiratory distress syndrome (OR, 8.01; 95% CI, 4.90 to 13.1), congenital heart disease (OR, 9.1; 95% CI, 5.05 to 16.4), central venous catheterization (OR, 3.9; 95% CI, 1.89 to 7.93), maternal preeclampsia (OR, 2.8; 95% CI, 1.6 to 4.79), and maternal diabetes (OR, 2.36; 95% CI, 1.36 to 4.07) conferred the highest risk for nRVT. Over a median follow-up of 15 years and after adjusting for confounders, neonates with nRVT versus the comparator cohort had a 15.5-fold risk of CKD, HTN, or death (n=49 [58%] versus n=90,050 [3%]; 95% CI, 11.7 to 20.6); 12.3-fold increased risk of CKD or death (n=39 [46%] versus n=32,016 [1%]; 95% CI, 8.9 to 16.8); and a 15.7-fold increased risk of HTN (n=33 [39%] versus n=64,458 [2%]; 95% CI, 11.1 to 21.1). None of the nRVT cohort developed ESKD. The median time to composite outcome of CKD, HTN, or death was 11.1 years.ConclusionsPatients with a history of nRVT remain at higher risk than the general population for long-term morbidity or mortality, indicating the need for long-term follow-up.

scholarly journals Risk factors associated with failure of total ankle arthroplasty: a nationwide cohort study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dong Hun Suh ◽  
Kyungdo Han ◽  
Jin Woo Lee ◽  
Hak Jun Kim ◽  
Bongsung Kim ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Service Failure ◽  
Group Versus ◽  
Population Based ◽  
Total Ankle Arthroplasty ◽  
Age Group ◽  
Ankle Arthroplasty ◽  
Factors Associated ◽  
Increased Risk

AbstractWe conducted a nationwide population-based cohort study to identify the risk factors associated with failure of total ankle arthroplasty (TAA). We included 2,914 subjects who underwent primary TAA between January 1, 2010, and December 31, 2016, utilizing the database of the Korean National Health Insurance Service. Failure of TAA was defined as revision TAA or arthrodesis procedures. An increased risk of TAA failure was observed in the < 65 age group versus the ≥ 75 age group [adjusted hazard ratios (aHR) 2.273, 95% confidence interval (CI) 1.223–4.226 in the 60–64 age group; aHR 2.697, 95% CI 1.405–5.178 in the 55–59 age group; aHR 2.281, 95% CI 1.145–4.543 in the 50–54 age group; aHR 2.851, 95% CI 1.311–6.203 in the < 50 age group]. Conversely, the ≥ 65 age group displayed no increase in the risk of TAA failure. The risk of TAA failure was increased in the severely obese group with body mass index (BMI) of ≥ 30 kg/m2 versus the normal BMI group (aHR 1.632; 95% CI 1.036–2.570). This population-based longitudinal study demonstrated that age < 65 years and BMI of ≥ 30 kg/m2 were associated with increased risk of TAA failure.

Morbidity and mortality in adult-onset IgA vasculitis: a long-term population-based cohort study

Rheumatology ◽  
2021 ◽  
Author(s):  
Johannes Nossent ◽  
Warren Raymond ◽  
Helen Isobel Keen ◽  
David Preen ◽  
Charles Inderjeeth
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Premature Death ◽  
Population Based ◽  
Increased Risk ◽  
Serious Infections ◽  
Comorbidity Index ◽  
Independent Risk Factors

Abstract Objectives With sparse data available, we investigated mortality and risk factors in adults with IgAV. Methods Observational population-based cohort study using state-wide linked longitudinal health data for hospitalised adults with IgAV (n = 267) and matched comparators (n = 1080) between 1980-2015. Charlson comorbidity index (CCI) and serious infections (SI) were recorded over an extensive lookback period prior to diagnosis. Date and causes of death were extracted from WA Death Registry. Mortality rate (deaths/1000 person-years) ratios (MRR) and hazard ratio (HR) for survival were assessed. Results During 9.9 (±9.8) years lookback patients with IgAV accrued higher CCI scores (2.60 vs1.50 p &lt; 0.001) and had higher risk of SI (OR 8.4, p &lt; 0.001), not fully explained by CCI scores. During 19 years follow-up, the rate of death in Patients with IgAV (n = 137) was higher than in comparators (n = 397) (MRR 2.06, CI 1.70-2.50, p &lt; 0.01) and the general population (SMRR 5.64, CI 4.25, 7.53, p &lt; 0.001). Survival in IgAV was reduced at five (72.7 vs. 89.7%) and twenty years (45.2% vs. 65.6%) (both p &lt; 0.05). CCI (HR1.88, CI:1.25 - 2.73, p = 0.001), renal failure (HR 1.48, CI: 1.04 - 2.22, p = 0.03) and prior SI (HR 1.48, CI:1.01 – 2.16, p = 0.04) were independent risk factors. Death from infections (5.8 vs 1.8%, p = 0.02) was significantly more frequent in patients with IgAV. Conclusions Premorbid comorbidity accrual appears increased in hospitalized patients with IgAV and predicts premature death. As comorbidity does not fully explain the increased risk of premorbid infections or the increased mortality due to infections in IgAV, prospective studies are needed.

scholarly journals The association of dry eye syndrome and psychiatric disorders: a nationwide population-based cohort study

2019 ◽  
Author(s):  
Chiao-Ying Liang ◽  
Wai-Man Cheang ◽  
Chun-Yuan Wang ◽  
Keng-Hung Lin ◽  
Li-Chen Wei ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bipolar Disorder ◽  
Cohort Study ◽  
Psychiatric Disorders ◽  
Dry Eye ◽  
Population Based ◽  
Dry Eye Syndrome ◽  
Psychiatric Disease ◽  
Neurotic Disorders ◽  
Increased Risk

Abstract Background Several previous studies reported a greater prevalence of dry eye syndrome (DES) among patients with psychiatric diseases. The aim of this study is to investigate the prevalence and risk factors of DES in patients with psychiatric disorders (PD) using nationwide population-based data in Taiwan. Methods This population-based cohort study retrospectively identified patients with PD from 1997 to 2011. The main outcome measures were the prevalence of DES in these patients and associated risk factors. Results A total of 75,650 patients with PD (3,665 in the DES cohort and 71,985 in the non-DES cohort) were included in the final analysis. The majority of patients in the DES group were women (72.6%). The mean age of patients in the DES cohort was 62.2 ± 14.9, which was significantly older than those in the non-DES group (50.9 ± 17.5). The patients with DES had a significantly greater likelihood of having dementia, bipolar disorder, depression, and neurotic disorders. Conditional regression analyses revealed that patients with dry eye disease were more likely to have schizophrenia (OR = 1.34), bipolar disorder (OR = 1.9), depression (OR = 1.54), and neurotic disorders (OR = 1.62). In addition, patients with DES were more likely to use 1st generation anti-psychotics (OR=1.28) and had a lower risk of using 2nd generation anti-psychotics (OR=0.64) Conclusion The study demonstrated that dry eye syndrome is associated with an increased risk of psychiatric disease, especially depression, bipolar disorder, and neurotic disorders, after adjusting for the comorbidities.

scholarly journals Ethnic disparities in stillbirth risk in Yunnan, China: a prospective cohort study, 2010-2018

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yanpeng Wu ◽  
Jianhong Pan ◽  
Dong Han ◽  
Lixin Li ◽  
Yanfei Wu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Preterm Birth ◽  
Mainland China ◽  
Ethnic Disparities ◽  
Sociodemographic Factors ◽  
Population Based ◽  
Ethnic Disparity ◽  
Health Examination ◽  
Table Analysis

Abstract Background Racial and ethnic disparities in stillbirth risk had been documented in most western countries, but it remains unknown in China. This study was to determine whether exist ethnic disparities in stillbirth risk in mainland China. Methods Pregnancy outcomes and ethnicity data were obtained from the National Free Preconception Health Examination Project (NEPHEP), a nationwide prospective population-based cohort study conducted in Yunnan China from 2010-2018. The Han majority and other four main minorities including Yi, Dai, Miao, Hani were investigated in the analysis. The stillbirth hazards were estimated by life-table analysis. The excess stillbirth risk (ESR) was computed for Chinese minorities using multivariable logistic regression. Results Compared with other four minorities, women in Han majority were more likely to more educated, less multiparous, and less occupied in agriculture. The pattern of stillbirth hazard of Dai women across different gestation intervals were found to be different from other ethnic groups, especially in 20-23 weeks with 3.2 times higher than Han women. The ESR of the Dai, Hani, Miao, and Yi were 45.05, 18.70, -4.17 and 12.28%, respectively. Adjusted for maternal age, education, birth order and other general risk factors, the ethnic disparity still persisted between Dai women and Han women. Adjusted for preterm birth further (gestation age <37 weeks) can reduce 16.91% ESR of Dai women and made the disparity insignificant. Maternal diseases and congenital anomalies explained little for ethnic disparities. Conclusions We identified the ethnic disparity in stillbirth risk between Dai women and Han women. General risk factors including sociodemographic factors and maternal diseases explained little. Considerable ethnic disparities can be attributed to preterm birth.

scholarly journals Increased non-typhoidal Salmonella hospitalizations in transfusion-naïve thalassemia children: a nationwide population-based cohort study

2021 ◽  
Author(s):  
Fang-Ju Lin ◽  
Jiunn-Ming Sheen ◽  
Yao-Hsu Yang ◽  
Kuang-Che Kuo
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Population Based ◽  
List Type ◽  
Research Database ◽  
Thalassemia Patient ◽  
Urbanization Level ◽  
Increased Risk ◽  
Taiwan National Health Insurance ◽  
History Of

Abstract Introduction Although non-typhoidal Salmonella (NTS) infection usually causes self-limited enterocolitis, several risk factors have been found to predispose individuals to more severe NTS infections. However, few studies have discussed the association between NTS infection and pediatric thalassemia populations. Material and methods A nationwide population-based retrospective cohort study was conducted using medical records of the selected children from the Taiwan National Health Insurance Research Database. Immunocompromised individuals or patients with a history of transfusion or splenectomy were excluded. One thalassemia patient was matched with four non-thalassemia patients based on their year of birth, sex, and urbanization level. Results In this cohort, 912 patients with thalassemia and 3648 comparison cohort were analyzed. The mean age of NTS hospitalization was 2.0 ± 1.4 in thalassemia cohort and 2.6 ± 2.4 in non-thalassemia cohort. Transfusion-naïve thalassemia children were proved to have a higher rate of NTS hospitalization (6.90 vs 4.11 per 1000 person-year; p = 0.0004) than the non-thalassemia cohort, with an adjusted hazard ratio (HR) of 1.68 (95% confidence interval [CI] = 1.26–2.24). Conclusion Our research shows that transfusion-naïve thalassemia is associated with an increased risk of NTS hospitalization. Further prospective study comparing the incidence and severity of NTS infection among children with and without thalassemia is needed. Impact Pediatric transfusion-naïve thalassemia patients have an 1.68-fold increased risk for hospitalization due to non-typhoidal Salmonella (NTS) infection. This is the first nationwide population-based cohort study based on an extremely large database that shows pediatric transfusion-naïve thalassemia patients have an increased risk for NTS hospitalizations. Besides the previously known risk factors such as extremes of age, sickle cell disease, or immunosuppressing conditions, clinicians must also take thalassemia as a possible risk factor for more severe NTS disease.

scholarly journals Clinical Characteristics and Risk Factors for Fatality and Severity in Patients with Coronavirus Disease in Korea: A Nationwide Population-Based Retrospective Study Using the Korean Health Insurance Review and Assessment Service (HIRA) Database

2020 ◽  
Vol 17 (22) ◽  
pp. 8559
Author(s):  
Seung-Geun Lee ◽  
Geun U. Park ◽  
Yeo Rae Moon ◽  
Kihoon Sung
Keyword(s):  
Risk Factors ◽  
Health Insurance ◽  
Retrospective Study ◽  
Clinical Characteristics ◽  
Severe Disease ◽  
Previous History ◽  
Population Based ◽  
Therapeutic Modalities ◽  
Risk Of Death ◽  
Increased Risk

Background: We aimed to investigate the clinical characteristics and risk factors for fatality and severity in these patients. Methods: In this nationwide population-based retrospective study, we investigated the data of 7339 laboratory-confirmed COVID-19 patients, aged ≥ 18 years, using the Korean Health Insurance Review and Assessment Service (HIRA) database. Comorbidities and medications used were identified using HIRA codes, and severe COVID-19 was defined as that requiring oxygen therapy, mechanical ventilator, cardiopulmonary resuscitation, or extracorporeal membrane oxygenation. The outcomes were death due to COVID-19 and COVID-19 severity. Results: Mean patient age was 47.1 years; 2970 (40.1%) patients were male. Lopinavir/ritonavir, hydroxychloroquine, antibiotics, ribavirin, oseltamivir, and interferon were administered to 35.8%, 28.4%, 38.1%, 0.1%, 0.3%, and 0.9% of patients, respectively. After adjusting for confounding factors, diabetes mellitus, chronic kidney disease, previous history of pneumonia, aging, and male were significantly associated with increased risk of death and severe disease. No medication was associated with a reduced risk of fatality and disease severity. Conclusions: We found several risk factors for fatality and severity in COVID-19 patients. As the drugs currently used for COVID-19 treatment have not shown significant efficacy, all efforts should be made to develop effective therapeutic modalities for COVID-19.

Sign in / Sign up

Export Citation Format

Share Document