What is the behavior of Breslow’s thickness?

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 9097-9097
Author(s):  
Gelcio L. Q. Mendes ◽  
Sergio Koifman
Keyword(s):  
Cox Model ◽  
Demographic Data ◽  
Mitotic Rate ◽  
Continuous Variable ◽  
Stage I ◽  
Linear Component ◽  
Risk Of Death ◽  
Kaplan Meier ◽  
Advanced Stages

9097 Background: Localized cutaneous melanomas (CM) have their clinical course predicted by microscopic findings in the tumor specimen, mostly Breslow’s thickness (BTL), ulceration and mitoses. It is not certain whether BTL has a linear relationship with overall survival (OS) or relapse-free survival (RFS). The aim of this study was to evaluate BTL´s linear (LC) and its non-linear component (NLC) with relation to survival. Methods: All consecutive cases of CM treated from 1997 to 2006 at a single institution were identified, individuals with stage I or II tumors, minimum follow up of one month and known BTL were selected, socio-demographic data, clinical and pathological findings, treatment and outcomes were abstracted. Information about ulceration was missing in more that 30% of cases and it was not evaluated, there was no information about mitotic rate. Survival was estimated by the Kaplan-Meier method. Multivariate analyses were performed by the Cox model. BTL was evaluated as a continuous variable, and the LC and NLC by the technique of smoothing, using p-splines. Results: There were 1465 cases of CM, 51 with no follow up, 137 had no information about BTL and 202 had advanced stages. This analysis is based on 1075 cases. In the Cox model, the variables associated OS were age [hazard ratio (HR) 1.02, 95% CI 1.01 to 1.03], sex (HR 1.56, 95% CI 1.2 to 2.04) and BTL (HR=1.079, 95% CI 1.065 to 1.094). The variables associated with RFS were age (HR 1.017, 95% CI 1.009 to 1.024), sex (HR 1.372, 95% CI 1.104 to 1.704) and BTL (1.068, 95% CI 1.057 to 1.080). In the analysis of LC and NLC of BTL, it was found that both LC and NLC were statistically significant for OS and RFS. There was an increase in the HR as BTL increased in those lesions thinner than 4mm, then such increase was not as evident and lesions with more than 10mm had a similar OS and RFS (plateau). Conclusions: BTL is one of the most powerful prognostic criteria of patients with stage I and II CM. The risk of death increases linearly for thin lesions up to 4mm, lesions thicker than 10mm behave as a uniform group with no further decrease in OS or RFS as the lesion becomes larger. In conclusion, BTL may not behave as a linear function, it has a LC for thinner lesions, but for thicker lesions, above 10mm, further increase in BTL may add no more risk.

scholarly journals A Proposal of a Personalized Surveillance Strategy for Gastric Cancer: A Retrospective Analysis of 9191 Patients

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Si-wei Pan ◽  
Peng-liang Wang ◽  
Han-wei Huang ◽  
Lei Luo ◽  
Xin Wang ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Proportional Hazards ◽  
Cox Proportional Hazards ◽  
Rank Test ◽  
Surveillance Strategy ◽  
Risk Of Death ◽  
Kaplan Meier ◽  
Advanced Stages ◽  
Personalized Cancer

Background. In gastric cancer, various surveillance strategies are suggested in international guidelines. The current study is intended to evaluate the current strategies and provide more personalized proposals for personalized cancer medicine. Materials and Methods. In the aggregate, 9191 patients with gastric cancer after gastrectomy from 1998 to 2009 were selected from the Surveillance, Epidemiology, and End Results database. Disease-specific survival was analyzed by Kaplan-Meier method and the log-rank test. Cox proportional hazards regression analyses were used to confirm the independent prognostic factors. As well, hazard ratio (HR) curves were used to compare the risk of death over time. Conditional survival (CS) was applied to dynamically assess the prognosis after each follow-up. Results. Comparisons from HR curves on different stages showed that earlier stages had distinctly lower HR than advanced stages. The curve of stage IIA was flat and more likely the same as that of stage I while that of stage IIB is like that of stage III with an obvious peak. After estimating CS at intervals of three months, six months, and 12 months in different periods, stages I and IIA had high levels of CS all along, while there were visible differences among CS levels of stages IIB and III. Conclusions. The frequency of follow-up for early stages, like stages I and IIA, could be every six months or longer in the first three years and annually thereafter. And those with unfavorable conditions, such as stages IIB and III, could be followed up much more frequently and sufficiently than usual.

Anaemia: A risk factor for death and adverse outcomes following surgery for acute lower limb ischaemia

Vascular ◽  
2021 ◽  
pp. 170853812110261
Author(s):  
Daniel Perren ◽  
Lauren Shelmerdine ◽  
Luke Boylan ◽  
Craig Nesbitt ◽  
James Prentis ◽  
...  
Keyword(s):  
Risk Factor ◽  
Cox Model ◽  
Univariate Analysis ◽  
Adverse Outcomes ◽  
Limb Ischaemia ◽  
Risk Of Death ◽  
Kaplan Meier ◽  
Acute Limb Ischaemia ◽  
Impact On Survival ◽  
Poor Outcomes

Introduction Acute limb ischaemia (ALI) forms a significant part of the vascular surgery workload and carries with it high rates of morbidity and mortality. Anaemia is also common amongst vascular surgical patients and has been linked with poor outcomes in some subgroups. We aimed to assess the frequency of anaemia in patients with ALI and its impact on survival and complications following revascularisation to help direct future efforts to optimise outcomes in this patient group. Methods A retrospective analysis of prospectively collected departmental data on patients undergoing surgical intervention for ALI between 2014 and 2018 was performed. Anaemia was defined as a pre-operative haemoglobin (Hb) of <120 g/L for women and <130 g/L for men. The primary outcome was overall survival, assessed with the Kaplan–Meier estimator, with application of Cox proportional hazard modelling to adjust for confounding covariates. Results There were 158 patients who underwent treatment for ALI: 89 (56.3%) of these were non-anaemic with a mean Hb of 146 (SD = 18.4), and 69 (43.7%) were anaemic with a mean Hb of 106 (SD = 13.4). Anaemic patients had a significantly higher risk of death than their non-anaemic counterparts on univariate analysis (HR = 2.11, 95% CIs, 1.28–3.5, p = 0.0036). There was ongoing divergence in survival up to around 6 months between anaemic and non-anaemic groups. Under the Cox model, anaemia was similarly significant as a predictor of death (HR = 2.15, 95% CIs, 1.17–3.95, p = 0.013), accounting for recorded comorbidities, medication use and blood transfusion. Conclusions Anaemia is a significant and independent risk factor for death following revascularisation for ALI and can be potentially be modified. Vascular surgical centres should ensure they have robust pathways in place to identify and consider treating anaemia. There is scope for further work to assess how to best optimise a patient’s levels of circulating haemoglobin.

Abstract P098: Slower Gait Speed is Associated with Increased Mortality Risk in Chronic Kidney Disease.

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Baback Roshanravan ◽  
Cassiane Robinson-Cohen ◽  
Kushang V Patel ◽  
Greg Levin ◽  
Ian H de Boer ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Gait Speed ◽  
Proportional Hazards ◽  
Prognostic Significance ◽  
Continuous Variable ◽  
Hazard Ratio ◽  
Risk Of Death ◽  
Social Security Death Index

Objective: Skeletal muscle dysfunction (sarcopenia) is an under-recognized complication of chronic kidney disease (CKD) that may have important clinical consequences. Gait speed is associated with sarcopenia and comorbid disease burden among older adults; however, little is known about the prognostic significance of gait speed in CKD. We determined the association of gait speed with all-cause mortality in a prospective cohort of non-dialysis CKD patients. Methods: We measured usual gait speed over 4-meters in 309 participants from a prospective study of non-dialysis CKD. Included subjects had an estimated glomerular filtration rate (eGFR ckdepi ) <90mL/min/1.73m 2 , were stroke-free and did not require a wheelchair for ambulation. Study coordinators assessed mortality during follow-up by phone contacts, medical record review, and the social security death index. We evaluated gait speed continuously, and using a cut point of 0.8 m/s, consistent with previous studies. We used Cox's proportional hazards to estimate the association of gait speed with mortality after adjustment for age, sex, race, smoking, diabetes, pre-existing CAD, BMI, eGFR and hemoglobin. Results: Median follow-up time was 2.7 years; range 27 days to 4.8 years. The mean age was 58.9 ± 13 years and mean eGFR by cystatin C (eGFR cysc ) was 48.5 ± 23mL/min/1.73m 2 . There were a total of 31 deaths (10.4%) during follow-up. Unadjusted mortality rates were 23 and 80 deaths per 1,000 person-years among participants who had a gait speed of >0.8m/s versus ≤0.8m/s, respectively. After full adjustment, gait speed ≤0.8m/s was associated with a 2.8-fold greater risk of death compared to a gait speed >0.8 m/s. Gait speed was also strongly associated with mortality when analyzed as a continuous variable ( Table ) and a stronger predictor of death than age, history of CAD, or diabetes. No. Deaths (%) Model 1 + Model 2 # Hazard Ratio 95% CI Hazard Ratio 95% CI Gait speed * 32(10) 0.74 (0.64-0.86) 0.75 (0.64-0.87) >0.8m/s 13 (6) Reference Reference ≤0.8m/s 19(19) 3.49 (1.54-7.95) 2.84 (1.25-6.48) * Gait speed analyzed continuously per 10cm/s increase in speed. +Model 1: Adjusted for age, sex, race, study site #Model 2: adds smoking, BMI, eGFR cysc , diabetes, prevalent coronary disease. Conclusion: Gait speed is strongly associated with death in a cohort of middle-aged CKD patients.

Down-regulation of miR-219-5p increase the risk of cancer-related mortality in patients with prostate cancer

2021 ◽  
pp. postgradmedj-2021-139981
Author(s):  
Shimin Tang ◽  
Hao Jiang ◽  
Zhijun Cao ◽  
Qiang Zhou
Keyword(s):  
Prostate Cancer ◽  
Prediction Model ◽  
Cancer Patients ◽  
Cox Regression ◽  
Cox Model ◽  
Risk Of Death ◽  
Kaplan Meier ◽  
Risk Of Progression ◽  
Patient Prognosis ◽  
Risk Of Cancer

IntroductionProstate cancer is a common malignancy in men that is difficult to treat and carries a high risk of death. miR-219-5p is expressed in reduced amounts in many malignancies. However, the prognostic value of miR-219-5p for patients with prostate cancer remains unclear.MethodsWe retrospectively analysed data from 213 prostate cancer patients from 10 June 2012 to 9 May 2015. Overall survival was assessed by Kaplan-Meier analysis and Cox regression models. Besides, a prediction model was constructed, and calibration curves evaluated the model’s accuracy.ResultsOf the 213 patients, a total of 72 (33.8%) died and the median survival time was 60.0 months. We found by multifactorial analysis that miR-219-5p deficiency increased the risk of death by nearly fourfold (HR: 3.86, 95% CI): 2.01 to 7.44, p<0.001) and the risk of progression by twofold (HR: 2.79, 95% CI: 1.68 to 4.64, p<0.001). To quantify each covariate’s weight on prognosis, we screened variables by cox model to construct a predictive model. The Nomogram showed excellent accuracy in estimating death’s risk, with a corrected C-index of 0.778.ConclusionsmiR-219-5p can be used as a biomarker to predict death risk in prostate cancer patients. The mortality risk prediction model constructed based on miR-219-5p has good consistency and validity in assessing patient prognosis.

scholarly journals Prognostic significance of occlusion length in recanalized chronic total occlusion lesion: a retrospective cohort study with 5-year follow-up

BMJ Open ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. e038302
Author(s):  
Tao Tian ◽  
Changdong Guan ◽  
Lijian Gao ◽  
Lei Song ◽  
Jiansong Yuan ◽  
...  
Keyword(s):  
Cohort Study ◽  
Primary Endpoint ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Chronic Total Occlusion ◽  
Secondary Outcome ◽  
Total Occlusion ◽  
Risk Of Death ◽  
Kaplan Meier

ObjectivesThis study sought to investigate the relationship between occlusion length and long-term outcomes of patients with recanalised chronic total occlusion (CTO) lesion.DesignA retrospective cohort study.SettingFuwai Hospital, National Center for Cardiovascular Disease, Beijing, ChinaParticipantsConsecutive patients with successfully recanalised CTO were included from January 2010 to December 2013.Primary and secondary outcome measuresThe primary endpoint of the present study was a composite event of all-cause death and myocardial infarction (MI). The secondary endpoints included target lesion revascularisation (TLR) and target vessel revascularisation (TVR).ResultsA total of 1987 patients were included and 1801 (90.6%) subjects completed 5-year follow-up in this study. Based on occlusion length, the patients were divided equally into two groups: short (length <15 mm, n=957) and long (length ≥15 mm, n=1030) CTO group. Kaplan-Meier survival curve showed no significant difference in the risk of the composite primary endpoint between short and long CTO groups (p=0.242). Receiver operating characteristic curve analysis also established occlusion length ≥15 mm as a cut-off value for predicting TLR and TVR, with an area under the curve of 0.604 (95% CI: 0.569 to 0.638, p<0.001) and 0.605 (95% CI: 0.572 to 0.638; p<0.001). Kaplan-Meier analysis revealed that the risks for TLR (p=0.002) and TVR (p=0.002) were higher in a patient with long CTO lesion. Multivariate Cox analysis also identified long CTO lesion as an independent predictor of TLR (HR: 1.539, 95% CI: 1.033 to 2.293; p=0.034) and TVR (HR: 1.476, 95% CI: 1.012 to 2.151; p=0.043).ConclusionPatients with long CTO lesion did not show a higher risk of death and MI after recanalisation, but had higher risks of TLR and TVR. Lesion with occlusion length ≥15 mm should be under close surveillance for restenosis after recanalisation.

Triple negative breast cancer: An institutional review

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. e22214-e22214
Author(s):  
M. Dioca ◽  
M. Savignano ◽  
L. Gimenez ◽  
L. Marino ◽  
C. Delfino ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Prognostic Factor ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Menopausal Status ◽  
Stage I ◽  
Poor Prognostic Factor ◽  
Risk Of Death ◽  
Increased Risk

e22214 Background: Triple negative breast cancer (BC) is a distinct group of tumors that show common but heterogeneous morphologic, genetic, and immunophenotypic features. Despite differences in the definition and prevalence, it comprises 8% to 20% of all breast cancers and is associated with an aggressive clinical course with significant risk of either local or systemic relapse and subsequent increased risk of death on short term follow up (particularly in the first 5 years).We study the pathological characteristics and the clinical outcome of a cohort of 77 triple negative BC patients (pts) diagnosed at our Institution. Methods: Between January 1999 and September 2008, 77 (stage I to III) triple negative BC pts. were retrospectively analyzed. All pts had their receptor status, Her neu, ck-5, ck-6 and staining for EGFR by the same pathologist. Pathological parameters (Pp) analyzed were: status of axilary lymph nodes (LN), nuclear grade, histologic grade, mitotic index and vascular invasion and the use of antraciclins in the adjuvant setting. Univariate and multivariate analysis (proporcional hazard regression Cox model) for the Pp associated with relapse, and the log rank test to compare two curves of each Pp for disease free survival (DFS), and overall survival (OS) were performed. Results: The median age was 57.8 years (range 30–86 years).The median follow up time was 57.7 months (range, 4- 241). From 77 Pts. analized, 65 (84.4%) were basal-like and 43 (64.6%) of those were GH3. Stage at the time of presentation was: 16 (20,7%) stage I; 40 (51,9%) stage II; 21 (27,7%) stage III. Pre-menopausal status was 29,48% (23 pts.), and 61% (47 pts) were LN negative. Overall, relapse rate was 38.5 % (n= 30), 63 Pts (81.8%) are still alive. Median DFS was not reached. Global DFS and OS were 59% and 79% respectively, and status of LN was the only prognostic factor. LN- vs LN+ DFS (p< 00.02) and OS p (< 0.02).All others Pp analyzed were not statistically significative. Conclusions: Despite previous studies have demonstrated that triple negative is an independent marker of poor prognosis in BC as a whole, in the LN-negative, and LN-positive groups, in this basal like population only positive LN was an independent poor prognostic factor for DFS and OS. No significant financial relationships to disclose.

Laparoscopic retroperitoneal lymph node dissection (L-RPLND) as therapeutic in stage I nonseminomatous germ cell testicular tumors: Findings from a referral center.

2017 ◽  
Vol 35 (6_suppl) ◽  
pp. 411-411
Author(s):  
Nicola Nicolai ◽  
Francesca Gasperoni ◽  
Davide Biasoni ◽  
Nicholas Tarabelloni ◽  
Mario Catanzaro ◽  
...  
Keyword(s):  
Adjuvant Chemotherapy ◽  
Vascular Invasion ◽  
Open Surgery ◽  
Continuous Variable ◽  
Stage I ◽  
Retroperitoneal Lymph Node Dissection ◽  
Safe Procedure ◽  
Full Data ◽  
Referral Center

411 Background: Active surveillance or one course of BEP are the usual policies in stage I NSGTT. RPLND has been progressively abandoned due to morbidity and, mostly, to its low reproducibility. L-RPLND was introduced aiming at reducing morbidity, but few systematic data are available concerning its therapeutic efficacy. A long-term accrual in a referral center is presented. Methods: Analysis includes patients undergoing primary L-RPLND between 2000 and 2014, performed by 4 different surgeons. Patients underwent unilateral dissection according to a template in use since 1980. Adjuvant chemotherapy was provided in cases with a positive nodal ratio ≥ 25%. Regular follow-up was provided. Performance, safety and effectiveness measures have been analyzed. Results: Out of 225 patients, full data including clinico-pathologic variables and follow-up are available in 188 cases. Mean age is 31 yrs, vascular invasion is present in 37.2%. Left dissections are 52%. Fifteen (8%) cases have been converted to open RPLND. Median duration of RPLND is 200 min. Median number of removed nodes is 15 (IQR: 11-20). Complications of Clavien Dindo grade ≥ 3 are 9. Twenty-six patients have metastatic nodes (pN+) and 6 received adjuvant chemotherapy. After a median follow-up of 40 months (range: 24, 71), 11 relapses occurred: 6 (3.7%) of 162 pN0 and 5 of 20 pN+ not undergoing adjuvant chemotherapy. Infield recurrences are not reported. All relapsed patients have been rescued by first line chemotherapy. Presence of vascular invasion (p .073) and node ratio as continuous variable (p .097) are not associated with recurrence considering all cases, while conversion to open RPLND is significant (p .019), considering patients operated by the two surgeons with homogeneous variables. Conclusions: L-RPLND in a referral centre is a safe procedure and is apparently effective as open surgery, as there is no an excess of relapses in pN0 cases (3.6%), and the proportion of relapses in pN1 (25%) compares with the traditional figures of open surgery. Conversion to open surgery may be a marker predicting recurrence in a mature phase of experience.

scholarly journals Squamous Cell Carcinoma of the Oral Tongue: A Single Institution Retrospective Cohort Study from Mansoura University Hospital

2019 ◽  
Vol 12 (4) ◽  
pp. 102
Author(s):  
Rasha Hamdy ◽  
Amal Halim
Keyword(s):  
Squamous Cell Carcinoma ◽  
Prognostic Factors ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Stage I ◽  
Stage Iii ◽  
Depth Of Invasion ◽  
Oral Tongue ◽  
Advanced Stages

Background: Egyptian hospital–based statistics showed that head & neck carcinomas represent 18% of all cancers and mostly diagnosed at advanced stages. Our Clinical Oncology & Nuclear Medicine Department of Mansoura Faculty of Medicine serves a large rural area of the Delta region of Egypt. There is no previous study in our institution that focused on oral tongue carcinoma alone. This study aims in establishing the demographics, treatment outcome and prognostic factors of oral tongue squamous cell carcinoma (SCC).Methods: We retrospectively reviewed data of 50 cases with oral tongue SCC treated in our department from January 2014 to December 2016 to evaluate the demography, pathological characteristics, and therapeutic modalities. We estimated the survival rates during the entire follow-up period by the Kaplan–Meier method. The univariate and multivariate Cox proportional hazards analysis were performed for prognostic factors determination.Results: The median follow-up was 30 months (range: 4-45 months). The 3-year overall survival (OS) and disease-free survival (DFS) rates were 68% and 60% respectively. By univariate analysis, both advanced stages (III, IVA) and depth of invasion >0.5 cm were statistically significant as prognostic factors for 3-year DFS and OS rates. DFS rates were 34% vs. 98% for stage III and IVA vs. stage I and II respectively (p = 0.001); 52% vs. 78% for >0.5 cm vs. ≤0.5 cm depth of invasion (p = 0.003). OS rates were 36% vs. 99% for stage III and IVA vs. stage I and II respectively (p = 0.002); 52% vs. 80% for >0.5 cm vs. ≤0.5 cm depth of invasion (p = 0.001). Multivariate analysis of prognostic factors affecting 3-year DFS and OS rates confirmed the statistical significance of the same 2 factors.Conclusions: The majority of our patients were males below 60 years. Tumors were mainly found at stage III and were moderately differentiated. Vascular invasion and lymphatic permeation were uncommon. Staging and tumor invasion depth significantly affected the outcome. The 3-year OS and DFS were 68% and 60% respectively.

scholarly journals Impact of mental disorders on COVID-19 outcomes

2021 ◽  
Vol 13 (5) ◽  
pp. 40-47
Author(s):  
N. N. Petrova ◽  
V. E. Pashkovskiy ◽  
M. S. Sivashova ◽  
A. N. Gvozdetsky ◽  
G. A. Prokopovich
Keyword(s):  
Mental Disorders ◽  
Mental State ◽  
Cox Model ◽  
Prognostic Significance ◽  
Risk Of Death ◽  
Poor Outcome ◽  
Coronavirus Infection ◽  
Poor Outcomes ◽  
A Prospective Study

Objective: to analyze clinical and follow-up indicators in patients with mental disorders and COVID-19 and to identify on their basis predictors of poor outcomes associated with mental state.Patients and methods. We conducted a prospective study in a multidisciplinary hospital. The severity of coronavirus infection was determined according to the temporary guidelines. Data collection was carried out using a patient chart consisting of 109 variables. Predictors of poor outcomes were determined using predictive models (logit regression, Cox model). The study included 97 patients: 41 men (42.3%) and 56 (57.7%) women, mean age – 62.3±15.3 years. 26 patients died; 71 patients recovered.Results and discussion. The death occurred on 11.5 day. The mental state of these patients was severe, with a predominance of delirium cases. With increasing age, the probability of non-lethal outcome decreases [hazard ratio (HR) 1.03; 95% confidence interval (CI) 1.00–1.06; p=0.037]. The risk of death increased by 1.03 (p=0.037) for each year of life. An improvement in the mental state of patients during psychotropic therapy is associated with an 11.11-fold decrease in the risk of poor outcome of coronavirus infection (HR 0.09; 95% CI 0.01–0.76; p=0.027). Delirium is a predictor of low patient survival, especially in prolonged hospitalizations (HR 4.55; 95% CI 1.66–12.48; p=0.003). The severity of coronavirus infection makes the greatest contribution to the poor outcome: the risk of death increases by 33.17 times (CR 33.17; 95% CI 4.01–274.65; p<0.001). The severity of the mental disorder had a greater impact on the risk of death compared with age, increasing it by 4.55 times (p=0.003).Conclusion. We found significant differences between the groups of deceased and surviving patients with COVID-19 concerning the variables related to certain mental disorders, their severity and dynamics, and the severity of coronavirus infection. In addition, the age of the patients had a significant impact on the prognosis of COVID-19. The results reflect the special prognostic significance of delirium in the structure of mental disorders developing in patients with coronavirus infection.

scholarly journals Malnutrition Affects Cholesterol Paradox in Coronary Artery Disease: a 41,229 Chinese Cohort Study

2021 ◽  
Author(s):  
Bo Wang ◽  
Jin Liu ◽  
Shiqun Chen ◽  
Ming Ying ◽  
Guanzhong Chen ◽  
...  
Keyword(s):  
Cox Regression ◽  
Cox Model ◽  
Cox Regression Analysis ◽  
Coronary Syndrome ◽  
Kaplan Meier ◽  
All Cause Mortality ◽  
Chinese Cohort ◽  
Artery Disease

Abstract Background: Several studies found that baseline low LDL-C concentration was associated with poor prognosis in patients with acute coronary syndrome (ACS), which was called “cholesterol paradox”. Low LDL-C concentration may reflect underlying malnutrition, which was strongly associated with increased mortality. We objected to investigate the cholesterol paradox in patients with CAD and the effects of malnutrition.Method: A total of 41,229 CAD patients admitted to Guangdong Provincial People's Hospital in China were included in this study from January 2007 to December 2018, and divided into two groups (LDL-C < 1.8 mmol/L, n=4,863; LDL-C ≥ 1.8 mmol/L, n = 36,366). We used Kaplan-Meier method and Cox regression analyses to assess the association between LDL-C levels and long-term all-cause mortality and the effect of malnutrition. Result: In this real-world cohort (mean age 62.94 years; 74.94% male), there were 5257 incidents of all-cause death during a median follow-up of 5.20 years [Inter-quartile range (IQR): 3.05-7.78 years]. Kaplan–Meier analysis showed that low LDL-C levels were associated with worse prognosis. After adjusting for baseline confounders (e.g., age, sex and comorbidities, etc.), multivariate Cox regression analysis revealed that low LDL-C level (<1.8mmol/L) was not significantly associated with all-cause mortality (adjusted HR, 1.04; 95% CI, 0.96-1.24). After adjustment of nutritional status, risk of all-cause mortality of patients with low LDL-C level decreased (adjusted HR, 0.90; 95% CI, 0.83-0.98). In the final multivariate Cox model, low LDL-C level was related to better prognosis (adjusted HR, 0.91; 95% CI, 0.84-0.99).Conclusion: Our results demonstrate that the cholesterol paradox persisted in CAD patients, but disappeared after accounting for the effects of malnutrition.

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