scholarly journals Profiles of Polyphenol Intake and Type 2 Diabetes Risk in 60,586 Women Followed for 20 Years: Results from the E3N Cohort Study

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1934
Author(s):  
Nasser Laouali ◽  
Takiy Berrandou ◽  
Joseph A. Rothwell ◽  
Sanam Shah ◽  
Douae El Fatouhi ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Cohort Study ◽  
Fruits And Vegetables ◽  
Cox Regression ◽  
Joint Effect ◽  
Varied Diet ◽  
Polyphenol Intake ◽  
The Individual ◽  
Daily Intakes

Most studies on dietary polyphenol intake and type 2 diabetes (T2D) risk have focused on total or specific subclasses of polyphenols. Since polyphenols are often consumed simultaneously, the joint effect of an intake of multiple subclasses should be explored. We aimed to identify profiles of the dietary polyphenol subclasses intake associated with T2D. A total of 60,586 women from the Etude Epidémiologique auprès de femmes de l’Education Nationale (E3N) cohort study were followed for 20 years between 1993 and 2014. T2D cases were identified and validated. The individual energy-adjusted daily intakes of 15 subclasses of polyphenols were estimated at baseline using a food frequency questionnaire and the PhenolExplorer database. We used Bayesian profile regression to perform the clustering of the covariates by identifying exposure profiles of polyphenol intakes and, simultaneously, link these to T2D risk by using multivariable Cox regression models. We validated 2740 incident T2D cases during follow-up, and identified 15 distinct clusters with different intake profiles and T2D risk. When compared to the largest cluster (n = 6298 women), higher risks of T2D were observed in three of those clusters, which were composed of women with low or medium intakes of anthocyanins, dihydroflavonols, catechins, flavonols, hydroxybenzoic acids, lignans, and stilbenes. One cluster (n = 4243), characterized by higher intakes of these polyphenol subclasses, exhibited lower T2D risk when compared to the reference cluster. These results highlight the importance of a varied diet of polyphenol-rich foods such as nuts, fruits, and vegetables to prevent T2D risk.

scholarly journals Mannose-binding Lectin and Risk of Cardiovascular Events and Mortality in Type 2 Diabetes: A Danish Cohort Study

2020 ◽  
Author(s):  
Anne Gedebjerg ◽  
Mette Bjerre ◽  
Alisa Devedzic Kjaergaard ◽  
Rudi Steffensen ◽  
Jens Steen Nielsen ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Cardiovascular Disease ◽  
Cohort Study ◽  
Cardiovascular Events ◽  
Cox Regression ◽  
Mannose Binding Lectin ◽  
Mannose Binding ◽  
All Cause Mortality ◽  
Binding Lectin

<b>Objective</b>: Mannose-binding lectin (MBL) is linked to risk of cardiovascular disease in diabetes, but the nature of the association is unclear. We investigated the association between MBL and risk of cardiovascular events (CVE) and all-cause mortality in type 2 diabetes. <p><b>Research Design and Methods</b>: In a cohort study of 7588 patients with type 2 diabetes, we measured serum MBL in 7305 and performed MBL expression genotyping in 3043. We grouped serum MBL and MBL expression genotypes into three categories: low, intermediate, and high. Outcomes were CVE (myocardial infarction, stroke, coronary revascularization, unstable angina, and cardiovascular death) and all-cause mortality. The association with outcomes was examined by spline and Cox regression analyses. </p> <p><b>Results</b>: Serum MBL and CVE showed a U-shaped association. Compared to the intermediate serum MBL category, the adjusted hazard ratio (HR) for CVE was 1.82 (95% CI, 1.34 to 2.46) for the low-MBL category and 1.48 (95% CI, 1.14 to 1.92) for the high-MBL category. We found a similar U-shaped association for all-cause mortality, but with lower risk estimates. Compared to the intermediate MBL expression genotype, the adjusted HR for CVE was 1.40 (95% CI, 0.87 to 2.25) for the low-expression genotype and 1.44 (95% CI, 1.01 to 2.06) for the high-expression genotype. MBL expression genotype was not associated with all-cause mortality. </p> <p><b>Conclusions:</b> Both serum MBL and MBL expression genotype showed a U-shaped association with CVE risk in individuals with type 2 diabetes. Our findings suggest that serum MBL is a risk factor for cardiovascular disease in this population.</p>

scholarly journals Mannose-binding Lectin and Risk of Cardiovascular Events and Mortality in Type 2 Diabetes: A Danish Cohort Study

2020 ◽  
Author(s):  
Anne Gedebjerg ◽  
Mette Bjerre ◽  
Alisa Devedzic Kjaergaard ◽  
Rudi Steffensen ◽  
Jens Steen Nielsen ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Cardiovascular Disease ◽  
Cohort Study ◽  
Cardiovascular Events ◽  
Cox Regression ◽  
Mannose Binding Lectin ◽  
Mannose Binding ◽  
All Cause Mortality ◽  
Binding Lectin

<b>Objective</b>: Mannose-binding lectin (MBL) is linked to risk of cardiovascular disease in diabetes, but the nature of the association is unclear. We investigated the association between MBL and risk of cardiovascular events (CVE) and all-cause mortality in type 2 diabetes. <p><b>Research Design and Methods</b>: In a cohort study of 7588 patients with type 2 diabetes, we measured serum MBL in 7305 and performed MBL expression genotyping in 3043. We grouped serum MBL and MBL expression genotypes into three categories: low, intermediate, and high. Outcomes were CVE (myocardial infarction, stroke, coronary revascularization, unstable angina, and cardiovascular death) and all-cause mortality. The association with outcomes was examined by spline and Cox regression analyses. </p> <p><b>Results</b>: Serum MBL and CVE showed a U-shaped association. Compared to the intermediate serum MBL category, the adjusted hazard ratio (HR) for CVE was 1.82 (95% CI, 1.34 to 2.46) for the low-MBL category and 1.48 (95% CI, 1.14 to 1.92) for the high-MBL category. We found a similar U-shaped association for all-cause mortality, but with lower risk estimates. Compared to the intermediate MBL expression genotype, the adjusted HR for CVE was 1.40 (95% CI, 0.87 to 2.25) for the low-expression genotype and 1.44 (95% CI, 1.01 to 2.06) for the high-expression genotype. MBL expression genotype was not associated with all-cause mortality. </p> <p><b>Conclusions:</b> Both serum MBL and MBL expression genotype showed a U-shaped association with CVE risk in individuals with type 2 diabetes. Our findings suggest that serum MBL is a risk factor for cardiovascular disease in this population.</p>

scholarly journals Snoring frequency and risk of type 2 diabetes mellitus: a prospective cohort study

BMJ Open ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. e042469
Author(s):  
Ningbin Dai ◽  
Qianwen Shi ◽  
Yujie Hua ◽  
Yu Guo ◽  
Zheng Bian ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Cohort Study ◽  
Interaction Effect ◽  
Chinese Population ◽  
Cox Regression ◽  
Baseline Survey ◽  
Increased Risk

ObjectiveTo evaluate the association between snoring frequency and type 2 diabetes mellitus (T2DM) according to age and gender in Chinese population.DesignA cohort study was performed in Suzhou site of the China Kadoorie Biobank. Residents who didn’t suffer from T2DM at baseline survey (2004–2008) and in half a year after baseline were enrolled in this study and followed cause-specific morbidity until 31 December 2013. All participants were requested to complete a detailed questionnaire and undergo anthropometric measurements. Cox regression models were used to estimate HRs and 95% CIs for the snoring and T2DM association.SettingWuzhong district, Suzhou, China.ParticipantsA total of 49 453 participants (men: 41.8%; mean age: 51.14±10.28 years) were enrolled in this study.Outcome measuresT2DM cases were defined as International Classification of Diseases 10th Revision code of E11 and were identified through disease registries and health insurance databases.ResultsDuring a media of 7.18 years follow-up, 1120 T2DM cases were identified. Higher T2DM incidence was observed in participants with frequent and occasional snoring compared with those without (4.80 and 2.87 vs 2.39 per 1000 person-years). The multivariable-adjusted model found snoring was independently associated with T2DM (HR 1.28, 95% CI 1.20 to 1.38), both in men (HR 1.25, 95% CI 1.10 to 1.41) and women (HR 1.28, 95% CI 1.17 to 1.39). Moreover, a significant multiplicative interaction effect between snoring and age was detected on T2DM risk (p=0.015).ConclusionsSnoring was independently associated with an increased risk of T2DM in Chinese population, both in men and women. Meanwhile, there was an interaction effect between snoring and age on T2DM risk.

scholarly journals Estimated glucose disposal rate and risk of stroke and mortality in type 2 diabetes: a nationwide cohort study

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Alexander Zabala ◽  
Vladimer Darsalia ◽  
Marcus Lind ◽  
Ann-Marie Svensson ◽  
Stefan Franzén ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Cohort Study ◽  
Cox Regression ◽  
Glucose Disposal ◽  
Risk Of Death ◽  
Increased Risk ◽  
Estimated Glucose Disposal Rate ◽  
Glucose Disposal Rate

Abstract Background and aims Insulin resistance contributes to the development of type 2 diabetes (T2D) and is also a cardiovascular risk factor. The aim of this study was to investigate the potential association between insulin resistance measured by estimated glucose disposal rate (eGDR) and risk of stroke and mortality thereof in people with T2D. Materials and methods Nationwide population based observational cohort study that included all T2D patients from the Swedish national diabetes registry between 2004 and 2016 with full data on eGDR and categorised as following: < 4, 4–6, 6–8, and ≥ 8 mg/kg/min. We calculated crude incidence rates and 95% confidence intervals (CIs) and used multiple Cox regression to estimate hazard ratios (HRs) to assess the association between the risk of stroke and death, according to the eGDR categories in which the lowest category < 4 (i.e., highest grade of insulin resistance), served as a reference. The relative importance attributed of each factor in the eGDR formula was measured by the R2 (± SE) values calculating the explainable log-likelihoods in the Cox regression. Results A total of 104 697 T2D individuals, 44.5% women, mean age of 63 years, were included. During a median follow up-time of 5.6 years, 4201 strokes occurred (4.0%). After multivariate adjustment the HRs (95% CI) for stroke in patients with eGDR categories between 4–6, 6–8 and > 8 were: 0.77 (0.69–0.87), 0.68 (0.58–0.80) and 0.60 (0.48–0.76), compared to the reference < 4. Corresponding numbers for the risk of death were: 0.82 (0.70–0.94), 0.75 (0.64–0.88) and 0.68 (0.53–0.89). The attributed relative risk R2 (± SE) for each variable in the eGDR formula and stroke was for: hypertension (0.045 ± 0.0024), HbA1c (0.013 ± 0.0014), and waist (0.006 ± 0.0009), respectively. Conclusion A low eGDR (a measure of insulin resistance) is associated with an increased risk of stroke and death in individuals with T2D. The relative attributed risk was most important for hypertension.

scholarly journals Relationship between Body Roundness Index and Risk of Type 2 Diabetes in Japanese Men and Women: A Reanalysis of a Cohort Study

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Wei Zhao ◽  
Jingjing Tong ◽  
Jinghua Li ◽  
Yongtong Cao
Keyword(s):  
Type 2 Diabetes ◽  
Cohort Study ◽  
Dose Response ◽  
Cox Regression ◽  
Function Analysis ◽  
Smoking Status ◽  
Smoothing Function ◽  
Predictive Values ◽  
The Relationship

Purpose. The purpose of this study was to investigate the association between body roundness index (BRI) and type 2 diabetes (T2DM) in each sex, explore the dose-response relationship between them, and evaluate the predictive value of BRI for T2DM. Materials and Methods. A retrospective cohort study was performed on 15,464 Japanese patients at the Murakami Memorial Hospital. Data on anthropometric indices and biochemical parameters were obtained. Multivariate Cox regression models were used to estimate the hazard ratios (HRs) of incident T2DM associated with BRI. Dose-response relationships were evaluated using a smoothing function analysis and the threshold effect. Receiver operating characteristic curves were used to evaluate and compare the predictive values of BRI, body mass index (BMI), and waist circumference (WC) for T2DM. Results. During a median 5.4-year follow-up period, 373 subjects were diagnosed with T2DM. After adjusting for age, alcohol intake, smoking status, fatty liver, systolic blood pressure, fasting plasma glucose, glycated hemoglobin, high-density lipoprotein cholesterol, triglycerides, and total cholesterol, the relationship between BRI and T2DM was linear in women (HR (95% CI) for BRI Z score = 1.48 (1.26,1.74)) and curvilinear in men (HR (95% CI) on the left and right of the inflection point = 0.70 (0.44, 1.10) and 1.46 (1.27, 1.67), respectively). Compared with BMI (area under the curve (AUC) = 0.684; p < 0.001 ) and WC (AUC = 0.700; p = 0.007 ), BRI was the strongest predictor of T2DM in men (AUC = 0.715). Similarly, the AUC of BRI was larger than that of BMI (AUC = 0.757; p = 0.966 ) and WC (AUC = 0.733; p = 0.015 ) in women. Conclusions. BRI was positively linearly associated with an elevated risk of incident T2DM in women. In men, the relationship between BRI and T2DM was J-shaped. BRI is an effective indicator of predicting T2DM. Its discriminatory power was higher than that of BMI and WC in both sexes.

scholarly journals Gestational Diabetes Mellitus and the Risks of Overall and Type-Specific Cardiovascular Diseases: A Population- and Sibling-Matched Cohort Study

2021 ◽  
Author(s):  
Yongfu Yu ◽  
Melissa Soohoo ◽  
Henrik Toft Sørensen ◽  
Jiong Li ◽  
Onyebuchi A. Arah
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Cohort Study ◽  
Gestational Diabetes ◽  
Gestational Diabetes Mellitus ◽  
Cox Regression ◽  
Maternal History ◽  
History Of ◽  
The Impact

<b>OBJECTIVE</b> <p>To evaluate associations between gestational diabetes mellitus (GDM) and various incident cardiovascular disease (CVD) endpoints, considering the effects of mediating role of type 2 diabetes and shared environmental/familial factors.</p> <p><b>RESEARCH DESIGN AND METHODS</b></p> <p>This population-based cohort study included 1002486 parous women in Denmark during 1978-2016. We used Cox regression to (i) examine the associations of GDM with overall and type-specific CVDs using full-cohort and sibling-matched analysis; (ii) quantify the impact of type 2 diabetes after GDM using mediation analysis; and (iii) assess whether these associations were modified by pre-pregnancy obesity or maternal history of CVD.</p> <p><b>RESULTS</b></p> <p>Women with a history of GDM had a 40% increased overall CVD risk (hazard ratio [HR]: 1.40, 95% confidence interval [CI]: 1.35-1.45). Sibling-matched analyses yielded similar results(HR, 1.44; 95%CI, 1.28-1.62). Proportion of association between GDM and overall CVD explained by subsequent type 2 diabetes was 23.3%(15.4%-32.8%). We observed increased risks of specific CVDs, including 65% increased stroke risk and more than two-fold risks for myocardial infarction, heart failure, and peripheral artery disease. The elevated overall risks were more pronounced among women with GDM and pre-pregnancy obesity or maternal history of CVD. </p> <p><b>CONCLUSIONS</b></p> <p>A history of GDM was associated with increased risks of overall and specific CVDs. Increased risks were partly explained by subsequent type 2 diabetes and the need to identify other pathways remains important. Continuous monitoring of women with a history of GDM, especially those with pre-pregnancy obesity or maternal history of CVD, may provide better opportunities to reduce their cardiovascular risk.</p>

scholarly journals Dietary Copper-Zinc Ratio and Type 2 Diabetes Risk in Women: The E3N Cohort Study

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1431-1431
Author(s):  
Nasser Laouali ◽  
Conor-James MacDonald ◽  
Douae El Fatouhi ◽  
Francesca Romana Mancini ◽  
Guy Fagherazzi ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Trace Elements ◽  
Cohort Study ◽  
Lower Risk ◽  
Cox Regression ◽  
Smoking Status ◽  
Normal Weight ◽  
Biological Processes ◽  
Obese Women

Abstract Objectives Trace elements are essential minerals that are required for a variety of biological processes. Zinc (Zn) is a trace element involved in many biological processes including regulation of insulin and glycaemia. It has been suggested that the serum copper (Cu) to Zn ratio could be of importance towards risk of diabetes. However, little is known about the effect of suboptimal intakes of these two competitive trace elements. We aimed to investigate the association between type 2 diabetes (T2D) incidence and the dietary Cu-Zn, ratio. Methods A total of 70,991 women from the E3N (Etude Epidémiologique auprès de femmes de la Mutuelle Générale de l'Education Nationale) cohort study were followed for 20 years. The individual daily energy-adjusted intakes of Cu and Zn were estimated at baseline using a validated food frequency questionnaire. T2D cases were identified and validated using diabetes-specific questionnaires and drug reimbursement insurance databases. Multivariable Cox regression models estimated hazard ratios (HRs) and 95% confidence intervals (CIs) between dietary Cu-Zn ratio intakes and T2D risk. Interactions were tested between Cu-Zn ratio and smoking status and BMI on incident T2D. Results A total of 3292 incident T2D cases were identified during follow-up. A lower Cu-Zn ratio was associated with a lower risk of T2D. Compared to the 1st quintile group, women from the 2nd (HR 0.87 [95% CI 0.78, 0.97]) and 3rd (HR 0.89 [95% CI 0.79, 0.99]) quintile groups had a lower risk of T2D. Spline analysis showed that a Cu-Zn ratio intake &lt; 0.30 was associated with a lower risk of T2D and that there was no departure from a linear association (P = 0.1180). There was an interaction between the Cu-Zn ratio and BMI on T2D risk (pInteraction = 0.0010) but not smoking status (pInteraction = 0.6956). Cu-Zn ratio was positively associated with T2D only in obese women, but not in normal-weight or overweight women. Conclusions Our findings suggest that a lower dietary Cu-Zn ratio intake is associated with a lower T2D risk, especially among obese women. Further studies are warranted to validate our results and determine whether the associations are similar in men. Funding Sources This work was supported by a grant for the E4N study project by the Agence Nationale de Recherche and by a grant for the Nutriperso Project (IDEX Paris Saclay).

scholarly journals Gestational Diabetes Mellitus and the Risks of Overall and Type-Specific Cardiovascular Diseases: A Population- and Sibling-Matched Cohort Study

2021 ◽  
Author(s):  
Yongfu Yu ◽  
Melissa Soohoo ◽  
Henrik Toft Sørensen ◽  
Jiong Li ◽  
Onyebuchi A. Arah
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Cohort Study ◽  
Gestational Diabetes ◽  
Gestational Diabetes Mellitus ◽  
Cox Regression ◽  
Maternal History ◽  
History Of ◽  
The Impact

<b>OBJECTIVE</b> <p>To evaluate associations between gestational diabetes mellitus (GDM) and various incident cardiovascular disease (CVD) endpoints, considering the effects of mediating role of type 2 diabetes and shared environmental/familial factors.</p> <p><b>RESEARCH DESIGN AND METHODS</b></p> <p>This population-based cohort study included 1002486 parous women in Denmark during 1978-2016. We used Cox regression to (i) examine the associations of GDM with overall and type-specific CVDs using full-cohort and sibling-matched analysis; (ii) quantify the impact of type 2 diabetes after GDM using mediation analysis; and (iii) assess whether these associations were modified by pre-pregnancy obesity or maternal history of CVD.</p> <p><b>RESULTS</b></p> <p>Women with a history of GDM had a 40% increased overall CVD risk (hazard ratio [HR]: 1.40, 95% confidence interval [CI]: 1.35-1.45). Sibling-matched analyses yielded similar results(HR, 1.44; 95%CI, 1.28-1.62). Proportion of association between GDM and overall CVD explained by subsequent type 2 diabetes was 23.3%(15.4%-32.8%). We observed increased risks of specific CVDs, including 65% increased stroke risk and more than two-fold risks for myocardial infarction, heart failure, and peripheral artery disease. The elevated overall risks were more pronounced among women with GDM and pre-pregnancy obesity or maternal history of CVD. </p> <p><b>CONCLUSIONS</b></p> <p>A history of GDM was associated with increased risks of overall and specific CVDs. Increased risks were partly explained by subsequent type 2 diabetes and the need to identify other pathways remains important. Continuous monitoring of women with a history of GDM, especially those with pre-pregnancy obesity or maternal history of CVD, may provide better opportunities to reduce their cardiovascular risk.</p>

scholarly journals Risk factors of peripheral neuropathy in patients with type 2 diabetes in Isfahan: Results of a cohort study in Iran

2018 ◽  
Vol 5 (12) ◽  
pp. 2926-2935
Author(s):  
Abdollah Mohammadian-Hafshejani ◽  
Reza Majdzadeh ◽  
Nasrin Mansournia ◽  
Mohammad Ali Mansournia
Keyword(s):  
Type 2 Diabetes ◽  
Cohort Study ◽  
Peripheral Neuropathy ◽  
Elementary Education ◽  
Cox Regression ◽  
Reference Group ◽  
Diabetic Patients ◽  
Isfahan Province

Introduction: Peripheral neuropathy (PN) is among the most prevalent complications of diabetes that can lead to impairment of mobility of diabetic patients. The purpose of the current study was to predict relative factors influencing the occurrence of peripheral neuropathy (PN) in patients with type 2 diabetes. Methods: This was a cohort study on diabetic patients in the Isfahan Province of Iran. The studied population consisted of patients with type 2 diabetes, of ages 18 or older, who were diagnosed as new cases of diabetes from 2007 to 2014, and whose follow-up was completed by the end of 2016. In this study, with regards to the presence of time-varying co-variates, timedependent Cox regression model was employed in order to estimate the Hazard Ratio (HR) of PN in the diabetic patients. Results: Overall, 1874 patients with diabetes participated in the study, of which 839 (44.77%) were men and 1035 (55.23%) were women. During the study period, PN occurred in 17.98% of the patients; the ratio was 17% in women and 19.18% in men. In comparison to the reference group, the adjusted HR of PN in males was equal to 3.66 (95% CI: 1.15-11.67), in housewives was equal to 4.09 (95% CI: 1.02-16.38), and divorced or wife died patients was equal to 3.02 (95% CI: 1.61-5.65). In addition, for each 6 month follow-up of the patients, the adjusted HR of PN increased to 1.19 (95% CI: 1.17-1.22). Conclusions: The adjusted HR of PN in men, in housewives, and elderly people, divorced or wife died patients, with elementary education level were greater than the reference group. Thus, training, screening and diagnostic programs should be carried out with greater sensitivity in patients who are at greater risk for PN.  

scholarly journals HbA1c and hypoglycaemia in intensively treated type 2 diabetes: a retrospective cohort study in primary care

JRSM Open ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 205427041877366
Author(s):  
Manil Malawana ◽  
Sally Kerry ◽  
Rohini Mathur ◽  
John Robson
Keyword(s):  
Type 2 Diabetes ◽  
Cohort Study ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Cox Regression ◽  
Antidiabetic Medication ◽  
Oral Antidiabetic ◽  
Hazard Ratios ◽  
All Cause Mortality

Objective To establish whether low HbA1c is associated with clinical hypoglycaemia among people with type 2 diabetes prescribed insulins or sulphonylureas. Design Retrospective cohort study using routine electronic GP health records collected between January 2013 and December 2015. Setting Three east London Clinical Commissioning Groups. Participants Two cohorts of adults with type 2 diabetes prescribed either (i) insulins with or without other oral antidiabetic medication (n = 6788, 36.4%) or (ii) sulphonylureas with or without other oral antidiabetic medications excluding insulins (n = 11,840, 63.6%). Main outcome measures First clinically recorded hypoglycaemia and all-cause mortality. Hazard ratios (HR) adjusting for age, ethnicity, renal function and comorbidities were calculated using Cox regression models. Results Compared with an HbA1c of 53–63 mmol/mol, the adjusted HR of hypoglycaemia in those with a low HbA1c, below 53 mmol/mol, in the insulin and sulphonylurea cohorts were 1.26 (95% CI, 0.97 to 1.62) and 1.54 (95% CI, 1.27 to 1.87), respectively. Adjusted HRs of all-cause mortality from low HbA1c in the insulin and sulphonylurea cohorts were 1.54 (95% CI, 1.15 to 2.07) and 1.42 (95% CI, 1.11 to 1.81), respectively. Increasing age and renal impairment were also associated with increased hypoglycaemic risk in both cohorts. Conclusions HbA1c below 53 mmol/mol was associated with episodes of clinical hypoglycaemia among people with type 2 diabetes prescribed sulphonylureas, and all-cause mortality in those prescribed insulins and sulphonylureas. These findings support the need for reviewing glycaemic targets and the intensities of treatment in those with low HbA1c prescribed insulins or sulphonylureas to reduce the risk of hypoglycaemia.

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