Morphological and hemodynamic analysis of posterior communicating artery aneurysms prone to rupture: a matched case–control study

2014 ◽  
Vol 8 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Guoli Duan ◽  
Nan Lv ◽  
Jianhua Yin ◽  
Jinyu Xu ◽  
Bo Hong ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Conditional Logistic Regression ◽  
Aneurysm Rupture ◽  
Posterior Communicating Artery ◽  
Patient Specific ◽  
Hemodynamic Parameters ◽  
Conditional Logistic Regression Analysis ◽  
Risk Of Rupture

ObjectivesWe evaluated the correlation between posterior communicating artery (PcomA) aneurysm rupture and morphological and hemodynamic parameters to assess related rupture risk indices.MethodsSix patients with PcomA aneurysms that ultimately ruptured (cases) were studied after initially being included in a prospective database including their three-dimensional (3D) imaging before rupture. For each case, four incidental stable unruptured aneurysms (controls) were randomly selected and matched based on clinical factors. The 3D images from all patients were reconstructed to establish the patient-specific model. Six morphologic parameters and three hemodynamic parameters were measured and calculated. A conditional logistic regression analysis was used to assess the individual risk of rupture.ResultsThe analysis demonstrated a larger aneurysm size (p=0.001), higher aspect ratio (p=0.018), ellipticity index (p<0.001), undulation index (p=0.005), percentage of low wall shear stress (WSS) area (LSA%) (p=0.010), and a lower normalized WSS (p=0.005) in the case group. The multivariate conditional logistic regression analysis demonstrated that only normalized WSS was significantly associated with the rupture of PcomA aneurysms (OR 0.151; 95% CI 0.025 to 0.914; p=0.040).ConclusionsHemodynamics and morphology are closely associated with aneurysm rupture, and WSS may be a more reliable parameter characterizing the rupture status of PcomA aneurysms.

Characteristics of Adenocarcinoma of the Gallbladder Following Cholecystectomies in the Hispanic Population

2019 ◽  
Vol 152 (Supplement_1) ◽  
pp. S64-S65
Author(s):  
David Gustafson ◽  
Osvaldo Padilla
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Incidental Finding ◽  
Conditional Logistic Regression ◽  
Gallbladder Disease ◽  
Predictor Variables ◽  
Wall Thickening ◽  
Conditional Logistic Regression Analysis

Abstract Introduction Gallbladder adenocarcinoma (GBC) is a rare malignancy. Frequency of incidental adenocarcinoma of the gallbladder in the literature is approximately 0.2% to 3%. Typically, GBC is the most common type and is discovered late, not until significant symptoms develop. Common symptoms include right upper quadrant pain, nausea, anorexia, and jaundice. A number of risk factors in the literature are noted for GBC. These risk factors are also more prevalent in Hispanic populations. This study sought to compare patients with incidental gallbladder adenocarcinomas (IGBC) to those with high preoperative suspicion for GBC. Predictor variables included age, sex, ethnicity, radiologic wall thickening, gross pathology characteristics (wall thickness, stone size, stone number, and tumor size), histologic grade, and staging. Methods Cases of GBC were retrospectively analyzed from 2009 through 2017, yielding 21 cases. Data were collected via Cerner EMR of predictor variables noted above. Statistical analysis utilized conditional logistic regression analysis. Results The majority of patients were female (n = 20) and Hispanic (n = 19). There were 14 IGBCs and 7 nonincidental GBCs. In contrast with previous research, exact conditional logistic regression analysis revealed no statistically significant findings. For every one-unit increase in AJCC TNM staging, there was a nonsignificant 73% reduction in odds (OR = 0.27) of an incidental finding of gallbladder carcinoma. Conclusion This study is important in that it attempts to expand existing literature regarding a rare type of cancer in a unique population, one particularly affected by gallbladder disease. Further studies are needed to increase predictive knowledge of this cancer. Longer studies are needed to examine how predictive power affects patient outcomes. This study reinforces the need for routine pathologic examination of cholecystectomy specimens for cholelithiasis.

scholarly journals Risiko Stres terhadap Penyakit Jantung Koroner (Analisis Lanjut Studi Kohort Penyakit Tidak Menular): Nested-case control

2020 ◽  
Vol 19 (03) ◽  
pp. 120-125
Author(s):  
Fatikhatul Mabruroh ◽  
Syahrizal Syarif
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Logistic Regression Analysis ◽  
Conditional Logistic Regression ◽  
Case Control ◽  
Conditional Logistic Regression Analysis ◽  
Nested Case Control

Penyakit Jantung koroner menjadi masalah kesehatan global baik pada negara maju ataupunberkembang. Stres sebagai salah satu faktor risiko penyakit jantung koroner masih kurangmendapatkan perhatian. Tujuan penelitian ini untuk mengetahui hubungan stres terhadap penyakit jantungkoroner di Kota Bogor tahun 2015. Disain studi yang digunakan dalam penelitian ini adalah nestesd-case control menggunakan data kohort yang dikumpulkan oleh Badan Penelitian dan Pengembangan Kesehatan. Jumlah sampel yang diambil pada penelitian in adalah 1.078 dengan perbandingan kelompok kasus dan kontrol 1:5. Jenis analisis yang digunakan adalah conditional logistic regression analysis. Hasil analisis menunjukkan risiko stres dan variabel lainnya, stres (OR adjusted 1,07 CI 95% 0,49 – 2,33), HDL (OR adjusted 0,8 CI 95% 0,55 – 1,17) , Usia (OR adjusted 1,77 CI 95% 1,07 – 2, 92), LDL (OR adjusted 2,34 CI 95% 1,38 – 3,95), dan kolesterol total (OR adjusted 0,55 CI 95% 0,32 – 0,94) tidak berhubungan secara signifikan pada terjadinya penyakit jantung koroner. Diharapkan terdapat penelitian lainnya menggunakan alat ukur yang lebih spesifik agar dapat meminimalisir adanya misklarifikasi pada melihat asosiasi stres terhadap penyakit jantung koroner.

scholarly journals Branches of the brachiocephalic was an independent risk factor for hemorrhagic pulmonary sheath (HPS) patients with acute Stanford A aortic dissection

2020 ◽  
Author(s):  
Qiuxia Xie ◽  
Haoling Qin ◽  
Ling Lin ◽  
Jian Guan ◽  
Xuhui Zhou
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Risk Factor ◽  
Aortic Dissection ◽  
Logistic Regression Analysis ◽  
Independent Risk Factor ◽  
Conditional Logistic Regression ◽  
Case Group ◽  
Conditional Logistic Regression Analysis

Abstract Background: AAD refers to the blood flow into the middle membrane through the intimal rupture of the aorta. Hemorrhagic pulmonary sheath (HPS) is a common complication of Stanford-A AAD. The risk factors of HPS are remaining unclear Methods: In this study, we have probed the potential risk factors of HPS patients with acute Stanford A aortic dissection. 18 HPS patients with acute Stanford A aortic dissection were selected as the case group. The age difference ± 5 years and the same sex are set as the matching principles. 36 patients with acute Stanford-A type AD who did not detect HPS in the same period were matched according to the ratio of 1:2. Demographic data, treatment methods, AD-related disease history, clinical symptoms and Charlson comorbidity index (CCI) values of each patient were collected. Meanwhile, the values of the maximum diameter of ascending aorta (mm), aortic dissection range, and the main branch of the aorta, pleural effusion/blood, and pericardial effusion/blood were measured by two experienced cardiovascular radiological physicians. Univariate and multivariate conditional logistic regression analysis was used in this study. Results: CCI value and the branches of the brachiocephalic in the case group were significantly higher than those in the control group (p<0.05). Univariate conditional logistic regression analysis showed CCI and branches of the brachiocephalic were associated with HPS. Multivariate conditional logistic regression analysis suggested that branches of the brachiocephalic were an independent risk factor for HPS (OR=7.02, 95%CI=1.28-38.62, p=0.025). Conclusions: Branches of the brachiocephalic were an independent risk factor for HPS.

scholarly journals Branches of the brachiocephalic was an independent risk factor for hemorrhagic pulmonary sheath (HPS) patients with acute Stanford A aortic dissection

2020 ◽  
Author(s):  
Qiuxia Xie ◽  
Haoling Qin ◽  
Ling Lin ◽  
Jian Guan ◽  
Xuhui Zhou
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Risk Factor ◽  
Aortic Dissection ◽  
Logistic Regression Analysis ◽  
Independent Risk Factor ◽  
Conditional Logistic Regression ◽  
Case Group ◽  
Conditional Logistic Regression Analysis

Abstract Background: AAD refers to the blood flow into the middle membrane through the intimal rupture of the aorta. Hemorrhagic pulmonary sheath (HPS) is a common complication of Stanford-A AAD. The risk factors of HPS are remaining unclear Methods: In this study, we have probed the potential risk factors of HPS patients with acute Stanford A aortic dissection. 18 HPS patients with acute Stanford A aortic dissection were selected as the case group. The age difference ± 5 years and the same sex are set as the matching principles. 36 patients with acute Stanford-A type AD who did not detect HPS in the same period were matched according to the ratio of 1:2. Demographic data, treatment methods, AD-related disease history, clinical symptoms and Charlson comorbidity index (CCI) values of each patient were collected. Meanwhile, the values of the maximum diameter of ascending aorta (mm), aortic dissection range, and the main branch of the aorta, pleural effusion/blood, and pericardial effusion/blood were measured by two experienced cardiovascular radiological physicians. Univariate and multivariate conditional logistic regression analysis was used in this study. Results: CCI value and the branches of the brachiocephalic in the case group were significantly higher than those in the control group (p<0.05). Univariate conditional logistic regression analysis showed CCI and branches of the brachiocephalic were associated with HPS. Multivariate conditional logistic regression analysis suggested that branches of the brachiocephalic were an independent risk factor for HPS (OR=7.02, 95%CI=1.28-38.62, p=0.025). Conclusions: Branches of the brachiocephalic were an independent risk factor for HPS.

scholarly journals Risk factors analysis of HPS patients with acute Stanford A aortic dissection

2019 ◽  
Author(s):  
Qiuxia Xie ◽  
Haoling Qin ◽  
Ling Lin ◽  
Jian Guan ◽  
Xuhui Zhou
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Aortic Dissection ◽  
Logistic Regression Analysis ◽  
Independent Risk Factor ◽  
Conditional Logistic Regression ◽  
Control Group ◽  
Case Group ◽  
Conditional Logistic Regression Analysis

Abstract Background: AAD refers to the blood flow into the middle membrane through the intimal rupture of the aorta. HPS is a common complication of Stanford-A AAD. The risk factors of HPS are remaining unclear Methods: In this study, we have probed the potential risk factors of hepatopulmonary syndrome (HPS) patients with acute Stanford A aortic dissection. 18 HPS patients with acute Stanford A aortic dissection were selected as case group. 36 Normal people were considerate as control group. Demographic data, treatment methods, AD related disease history, clinical symptoms and Charlson comorbidity index (CCI) values of each patient were collected. Meanwhile, the values of maximum diameter of ascending aorta (mm), aortic dissection range, and main branch of aorta, pleural effusion/blood, and pericardial effusion/blood were measured by two experienced cardiovascular radiological physicians. Univariate and multivariate conditional logistic regression analysis were used in this study. Results: CCI value and the branches of the brachiocephalus in case group were significant higher than that in control group (p<0.05). Univariate conditional logistic regression analysis showed CCI and branches of the brachiocephalus were associated with HPS. Multivariate conditional logistic regression analysis suggested that branches of the brachiocephalus was an independent risk factor for HPS (OR=7.02, 95%CI=1.28-38.62, p=0.025). Conclusions: Branches of the brachiocephalus were an independent risk factor for HPS.

scholarly journals Association of Adiponectin Gene Variations with Risk of Incident Myocardial Infarction and Ischemic Stroke: A Nested Case-Control Study

2006 ◽  
Vol 52 (11) ◽  
pp. 2021-2027 ◽  
Author(s):  
Hillary H Hegener ◽  
I-Min Lee ◽  
Nancy R Cook ◽  
Paul M Ridker ◽  
Robert YL Zee
Keyword(s):  
Risk Factors ◽  
Myocardial Infarction ◽  
Logistic Regression ◽  
Regression Analysis ◽  
Ischemic Stroke ◽  
Conditional Logistic Regression ◽  
Adiponectin Gene ◽  
Conditional Logistic Regression Analysis ◽  
Caucasian Men ◽  
Potential Risk Factors

Abstract Background: Adiponectin (ADIPOQ) gene variations are associated with risk of cardiovascular disease in patients with diabetes. No prospective data are available, however, on the risk of atherothrombotic disorders in persons with ADIPOQ variations who do not have diabetes. Methods: From a group of DNA samples collected at baseline in a prospective cohort of 14 916 initially healthy American men, we assessed the presence of 5 ADIPOQ genetic variants (rs266729, rs182052, rs822396, rs2241766, and rs1501299) in samples from 600 Caucasian men who subsequently suffered an atherothrombotic event (incident myocardial infarction or ischemic stroke) and from 600 age- and smoking-matched Caucasian men who remained free of reported vascular disease during follow-up (controls). Results: Genotype distributions for the variations tested were in Hardy-Weinberg equilibrium. Marker-by-marker conditional logistic regression analysis, adjusted for potential risk factors, showed an association of rs266729 [recessive: odds ratio (OR), 0.26; 95% confidence interval (CI), 0.10–0.64; P = 0.004] and rs182052 (recessive: OR, 0.40; 95% CI, 0.21–0.76; P = 0.006) with decreased risk of ischemic stroke. These findings remained significant after Bonferroni correction. Haplotype-based (constituted by rs266729, rs182052, and rs822396) conditional logistic regression analysis, adjusted for the same potential risk factors, showed an association of haplotype G-A-G (OR, 0.28; 95% CI, 0.09–0.87; P = 0.03) with decreased risk of ischemic stroke. Prespecified analysis limited to participants without baseline diabetes showed similar significant findings. Conclusions: The present prospective investigation provides further evidence for a protective role of adiponectin gene variation in the risk of ischemic stroke that was independent of the presence of diabetes.

scholarly journals Hemodynamic–morphological discriminant models for intracranial aneurysm rupture remain stable with increasing sample size

2014 ◽  
Vol 8 (1) ◽  
pp. 104-110 ◽  
Author(s):  
Jianping Xiang ◽  
Jihnhee Yu ◽  
Kenneth V Snyder ◽  
Elad I Levy ◽  
Adnan H Siddiqui ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Intracranial Aneurysm ◽  
Sample Size ◽  
Regression Models ◽  
Prediction Models ◽  
Flow Simulation ◽  
Aneurysm Rupture ◽  
Hemodynamic Parameters ◽  
Operating Characteristics

BackgroundWe previously established three logistic regression models for discriminating intracranial aneurysm rupture status based on morphological and hemodynamic analysis of 119 aneurysms. In this study, we tested if these models would remain stable with increasing sample size, and investigated sample sizes required for various confidence levels (CIs).MethodsWe augmented our previous dataset of 119 aneurysms into a new dataset of 204 samples by collecting an additional 85 consecutive aneurysms, on which we performed flow simulation and calculated morphological and hemodynamic parameters, as done previously. We performed univariate significance tests on these parameters, and multivariate logistic regression on significant parameters. The new regression models were compared against the original models. Receiver operating characteristics analysis was applied to compare the performance of regression models. Furthermore, we performed regression analysis based on bootstrapping resampling statistical simulations to explore how many aneurysm cases were required to generate stable models.ResultsUnivariate tests of the 204 aneurysms generated an identical list of significant morphological and hemodynamic parameters as previously (from the analysis of 119 cases). Furthermore, multivariate regression analysis produced three parsimonious predictive models that were almost identical to the previous ones, with model coefficients that had narrower CIs than the original ones. Bootstrapping showed that 10%, 5%, 2%, and 1% convergence levels of CI required 120, 200, 500, and 900 aneurysms, respectively.ConclusionsOur original hemodynamic–morphological rupture prediction models are stable and improve with increasing sample size. Results from resampling statistical simulations provide guidance for designing future large multi-population studies.

scholarly journals Parenthood in Survivors of Hodgkin Lymphoma: An EORTC-GELA General Population Case-Control Study

2012 ◽  
Vol 30 (31) ◽  
pp. 3854-3863 ◽  
Author(s):  
Marleen A.E. van der Kaaij ◽  
Natacha Heutte ◽  
Paul Meijnders ◽  
Edwige Abeilard-Lemoisson ◽  
Michele Spina ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
General Population ◽  
Hodgkin Lymphoma ◽  
Logistic Regression Analysis ◽  
Conditional Logistic Regression ◽  
Post Treatment ◽  
Factors Influencing ◽  
The Impact ◽  
Population Controls

Purpose We investigated the impact of Hodgkin lymphoma (HL) on parenthood, including factors influencing parenthood probability, by comparing long-term HL survivors with matched general population controls. Patients and Methods A Life Situation Questionnaire was sent to 3,604 survivors treated from 1964 to 2004 in successive clinical trials. Responders were matched with controls (1:3 or 4) for sex, country, education, and year of birth (10-year groups). Controls were given an artificial date of start of treatment equal to that of their matched case. The main end point was presence of biologic children after treatment, which was evaluated by using conditional logistic regression analysis. Logistic regression analysis was used to analyze factors influencing spontaneous post-treatment parenthood. Results In all, 1,654 French and Dutch survivors were matched with 6,414 controls. Median follow-up was 14 years (range, 5 to 44 years). After treatment, the odds ratio (OR) for having children was 0.77 (95% CI, 0.68 to 0.87; P < .001) for survivors compared with controls. Of 898 survivors who were childless before treatment, 46.7% achieved post-treatment parenthood compared with 49.3% of 3,196 childless controls (OR, 0.87; P = .08). Among 756 survivors with children before treatment, 12.4% became parents after HL treatment compared with 22.2% of 3,218 controls with children before treatment (OR, 0.49; P < .001). Treatment with alkylating agents, second-line therapy, and age older than 35 years at treatment appeared to reduce the chances of spontaneous post-treatment parenthood. Conclusion Survivors of HL had slightly but significantly fewer children after treatment than matched general population controls. The difference concerned only survivors who had children before treatment and appears to have more personal than biologic reasons. The chance of successful post-treatment parenthood was 76%.

Sign in / Sign up

Export Citation Format

Share Document