Outcomes and healthcare resource utilization associated with medically attended hypoglycemia in older patients with type 2 diabetes initiating basal insulin in a US managed care setting

Association of hypoglycaemia with the risks of arrhythmia and mortality in individuals with diabetes - a systematic review and meta-analysis

Background

Hypoglycaemia has been linked to an increased risk of cardiac arrhythmias by causing autonomic and metabolic alterations, which may be associated with detrimental outcomes in individuals with diabetes(IWD), such as cardiovascular diseases (CVDs) and mortality, especially in multimorbid or frail people. However, such relationships in this population have not been thoroughly investigated. For this reason, we conducted a systematic review and meta-analysis.

Methods

Relevant papers published on PubMed, Embase, Cochrane, Web of Knowledge, Scopus, and CINHAL complete from inception to December 22, 2022 were routinely searched without regard for language. All of the selected articles included odds ratio, hazard ratio, or relative risk statistics, as well as data for estimating the connection of hypoglycaemia with cardiac arrhythmia, CVD-induced death, or total death in IWD. Regardless of the heterogeneity assessed by the I2 statistic, pooled relative risks (RRs) and 95% confidence intervals (CI) were obtained using random-effects models.

Results

After deleting duplicates and closely evaluating all screened citations, we chose 60 studies with totally 5,960,224 participants for this analysis. Fourteen studies were included in the arrhythmia risk analysis, and 50 in the analysis of all-cause mortality. Hypoglycaemic patients had significantly higher risks of arrhythmia occurrence (RR 1.42, 95%CI 1.21-1.68), CVD-induced death (RR 1.59, 95% CI 1.24-2.04), and all-cause mortality (RR 1.68, 95% CI 1.49-1.90) compared to euglycaemic patients with significant heterogeneity.

Conclusion

Hypoglycaemic individuals are more susceptible to develop cardiac arrhythmias and die, but evidence of potential causal linkages beyond statistical associations must await proof by additional specifically well planned research that controls for all potential remaining confounding factors.

Use of Second-Generation Basal Insulin Gla-300 in Special Populations: A Narrative Mini-Review

BACKGROUND AND AIMS

Hypoglycemia and insulin-related adverse events are crucial barriers to effective diabetes management, particularly in the elderly, people with renal impairment, people with diabetes fasting during Ramadan, or people with type 1 diabetes mellitus (T1DM). There is a scarcity of clinical and real-world evidence assessing the effectiveness and safety of insulin glargine 300 U/mL (Gla-300) in these special populations. To understand the entirety of evidence, this mini-review elaborates on the use of Gla-300 in diabetes management among special populations.

METHODS

Clinical and real-world evidence related to the use of Gla-300 among special populations with diabetes were retrieved using PUBMED and Google Scholar.

RESULTS

Gla-300 has shown improved glycemic control with stable insulin action and low risk of hypoglycemia in diverse groups with diabetes. It also appears to have an acceptable safety profile during Ramadan fasting. However, adequate monitoring and adjustment of insulin dose on an individual basis should be considered.

CONCLUSION

Gla-300 is a second-generation basal insulin with proven benefits of reduced risk of hypoglycemia and improved glycemic control in special populations of people with diabetes.

Economic burden of diabetes-related hypoglycemia on patients, payors, and employers

The economic and psychological consequences of diabetes-related hypoglycemic events are multifold and shared across various parties, including patients and their family or caregivers, payors, and employers. Hypoglycemic events contribute to increased morbidity, mortality, and a substantial portion of diabetes economic burden. Both severe and non-severe hypoglycemic episodes contribute to economic and psychological burden, and can have short-term consequences, such as emergency services, hospitalization, clinic visits, and increased use of diabetes supplies. Severe hypoglycemic events also generate additional follow-up costs, and are likely to occur again. Left untreated, hypoglycemia can have long-term consequences including, death, cardiovascular events, and cognitive issues. Costs vary geographically based on the treatment protocols which focus on outpatient treatment versus increased in-patient hospitalization. Certain types of medications are also associated with increased hypoglycemia, which requires closer monitoring of the patient, such as with basal insulin initiation. Some individuals with diabetes may be more vulnerable to hypoglycemia, such as the elderly, postoperative bariatric patients, and adolescent females. Measures to mitigate hypoglycemia are essential to ease the economic burden of these events. Medication management, optimal glucose control, lifestyle modifications and frequent glucose monitoring are some interventions which may help prevent hypoglycemia.

Population segmentation of type 2 diabetes mellitus patients and its clinical applications - a scoping review

Background

Population segmentation permits the division of a heterogeneous population into relatively homogenous subgroups. This scoping review aims to summarize the clinical applications of data driven and expert driven population segmentation among Type 2 diabetes mellitus (T2DM) patients.

Methods

The literature search was conducted in Medline®, Embase®, Scopus® and PsycInfo®. Articles which utilized expert-based or data-driven population segmentation methodologies for evaluation of outcomes among T2DM patients were included. Population segmentation variables were grouped into five domains (socio-demographic, diabetes related, non-diabetes medical related, psychiatric / psychological and health system related variables). A framework for PopulAtion Segmentation Study design for T2DM patients (PASS-T2DM) was proposed.

Results

Of 155,124 articles screened, 148 articles were included. Expert driven population segmentation approach was most commonly used, of which judgemental splitting was the main strategy employed (n = 111, 75.0%). Cluster based analyses (n = 37, 25.0%) was the main data driven population segmentation strategies utilized. Socio-demographic (n = 66, 44.6%), diabetes related (n = 54, 36.5%) and non-diabetes medical related (n = 18, 12.2%) were the most used domains. Specifically, patients’ race, age, Hba1c related parameters and depression / anxiety related variables were most frequently used. Health grouping/profiling (n = 71, 48%), assessment of diabetes related complications (n = 57, 38.5%) and non-diabetes metabolic derangements (n = 42, 28.4%) were the most frequent population segmentation objectives of the studies.

Conclusions

Population segmentation has a wide range of clinical applications for evaluating clinical outcomes among T2DM patients. More studies are required to identify the optimal set of population segmentation framework for T2DM patients.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12874-021-01209-w.

Meta-Analysis: Association Between Hypoglycemia and Serious Adverse Events in Older Patients Treated With Glucose-Lowering Agents

AIMS

We conducted a meta-analysis of serious adverse events (dementia, macro- and micro-vascular events, falls and fractures, and death) associated with hypoglycemia in older patients treated with glucose lowering drugs.

MATERIALS AND METHODS

Meta-analysis of studies reporting on hypoglycemia and adverse events. The search included studies from two previously published systematic reviews, and an updated search of MEDLINE and EMBASE from April 2014 to November 2019. We assessed study validity based on ascertainment of hypoglycemia, adverse events and adjustment for confounders, and conducted a random effects meta-analyses, assessing heterogeneity using the I² statistic.

RESULTS

We included 44 studies involving 2,507,434 participants. Most of the studies used adjusted analysis for confounders and hypoglycaemic events were typically identified based on healthcare databases (severe events). Hypoglycemia was associated with increased likelihood of death in a meta-analysis of eighteen studies, pooled OR 2.02 (95% Confidence Interval 1.75-2.32). Studies assessing mortality signal a time-response relationship with a higher risk of adverse events occurring within the first 90 days after hypoglycemia. Our meta-analysis of nine studies demonstrated that hypoglycaemic episodes were associated with dementia - pooled OR 1.50 (95% CI 1.29-1.74). Our meta-analysis of nineteen studies demonstrated associations between hypoglycaemia and macrovascular complications, pooled OR 1.81 (95% CI 1.70-1.94), and microvascular complications (two studies) pooled OR 1.77 (95% CI 1.49-2.10). There is also an association between hypoglycemia and cardiovascular death (six studies) - pooled OR 2.11 (95% CI 1.55 to 2.87). Similarly, our meta-analysis of six studies demonstrated an association between hypoglycemia and falls and fractures, pooled OR 1.78 (95% CI 1.44-2.21) and 1.68 (95% CI 1.37-2.07) respectively.

CONCLUSION

This meta-analysis confirms previously reported concerns of serious harm following hypoglycemia, especially in the immediate time period after a hypoglycaemic event. Avoidance of hypoglycaemic episodes should be a priority in this vulnerable population.

Associations between multimorbidity, all-cause mortality and glycaemia in people with type 2 diabetes: A systematic review

Introduction

Type 2 diabetes (T2D) is a major health priority worldwide and the majority of people with diabetes live with multimorbidity (MM) (the co-occurrence of ≥2 chronic conditions). The aim of this systematic review was to explore the association between MM and all-cause mortality and glycaemic outcomes in people with T2D.

Methods

The search strategy centred on: T2D, MM, comorbidity, mortality and glycaemia. Databases searched: MEDLINE, EMBASE, CINAHL Complete, The Cochrane Library, and SCOPUS. Restrictions included: English language, quantitative empirical studies. Two reviewers independently carried out: abstract and full text screening, data extraction, and quality appraisal. Disagreements adjudicated by a third reviewer.

Results

Of the 4882 papers identified; 41 met inclusion criteria. The outcome was all-cause mortality in 16 studies, glycaemia in 24 studies and both outcomes in one study. There were 28 longitudinal cohort studies and 13 cross-sectional studies, with the number of participants ranging from 96–892,223. Included studies were conducted in high or upper-middle-income countries. Fifteen of 17 studies showed a statistically significant association between increasing MM and higher mortality. Ten of 14 studies showed no significant associations between MM and HbA1c. Four of 14 studies found higher levels of MM associated with higher HbA1c. Increasing MM was significantly associated with hypoglycaemia in 9/10 studies. There was no significant association between MM and fasting glucose (one study). No studies explored effects on glycaemic variability.

Conclusions

This review demonstrates that MM in T2D is associated with higher mortality and hypoglycaemia, whilst evidence regarding the association with other measures of glycaemic control is mixed. The current single disease focused approach to management of T2D seems inappropriate. Our findings highlight the need for clinical guidelines to support a holistic approach to the complex care needs of those with T2D and MM, accounting for the various conditions that people with T2D may be living with.

Systematic review registration

International Prospective Register of Systematic Reviews CRD42017079500

Association of hypoglycaemia severity with clinical, patient-reported and economic outcomes in US patients with type 2 diabetes using basal insulin

AIMS

To evaluate the clinical and patient-reported outcomes and healthcare utilization and costs associated with patient-reported hypoglycaemia in US adults with type 2 diabetes (T2D) treated with basal insulin.

MATERIALS AND METHODS

This was an observational, cross-sectional, survey-based study of adults with T2D on basal insulin ± oral antidiabetes drugs (OADs) or rapid-acting/premixed insulin, who had in the past ever experienced hypoglycaemia, using US data from the National Health and Wellness Survey. Eligible patients were categorized as having no hypoglycaemia (38.7%), non-severe hypoglycaemia (55.1%), or severe hypoglycaemia (6.2%) in the preceding 3 months. Outcomes included health-related quality of life (HRQoL), work productivity and activity impairment, healthcare resource utilization, and estimated direct and indirect costs. Multivariable regression models were performed to control for patient characteristics.

RESULTS

Patients who experienced severe hypoglycaemia had significantly (P < .05) lower HRQoL scores, greater overall impairment of work productivity and activity, greater healthcare resource utilization, and higher costs compared with those who experienced non-severe or no hypoglycaemia. Patients with non-severe hypoglycaemia also reported an impact on the number of provider visits, indirect costs, and HRQoL.

CONCLUSIONS

Patients with T2D using basal insulin ± OADs or rapid-acting/premixed insulin in the United States who experienced severe hypoglycaemia had greater impairment of activity and work productivity, utilized more healthcare resources, and incurred higher associated costs than those with non-severe or no hypoglycaemia. The study also demonstrated the impact that non-severe hypoglycaemic events have on economic and HRQoL outcomes. Reducing the incidence and severity of hypoglycaemia could lead to clinically meaningful improvements in HRQoL and may result in lower healthcare utilization and associated costs.

All-cause and diabetes-related healthcare costs among US adults with type 2 diabetes initiating exenatide once weekly or insulin glargine

AIMS

To compare healthcare utilization and costs between patients with type 2 diabetes (T2D) treated with exenatide (Bydureon) once weekly (EQW) and patients treated with insulin glargine (IG).

MATERIALS AND METHODS

Using the MarketScan Commercial and Medicare Supplemental databases, we conducted a retrospective cohort study of adult US patients with claim with a diagnosis of T2D, initiating EQW or IG from February 1, 2012 to June 30, 2014 (first claim = index date). All-cause and diabetes-related utilization and costs were measured during the 12 months after the index date. EQW patients were matched 1:1 to IG patients, using propensity scores. Logistic and ordinary least-squares regression models were fit to model differences between the matched cohorts.

RESULTS

There were 7749 EQW patients matched to 7749 IG patients. EQW patients had significantly (P < .05) lower odds of all-cause inpatient (IP) admissions (odds ratio = 0.737 [95% confidence interval, 0.661, 0.822]), diabetes-related IP admissions (0.720 [95% confidence interval, 0.635, 0.815]) and diabetes-related IP admissions or emergency room visits (0.778 [95% confidence interval, 0.713, 0.847]). EQW patients had significantly (P < .05) lower all-cause (cost difference = -113 USD [95% confidence interval, -120 USD, -106 USD]) and diabetes-related (-806 USD [95% confidence interval, -871 USD, -746 USD]) medical costs, and had significantly (P < .05) higher all-cause total costs (ie, medical plus pharmacy) (3228 USD [95% confidence interval, 3110 USD, 3367 USD]), diabetes-related total costs (1951 USD [95% confidence interval, 1873 USD, 2036 USD]), all-cause pharmacy costs (2792 USD [95% confidence interval, 2700 USD, 2928 USD]) and diabetes-related pharmacy costs (1923 USD [95% confidence interval, 1890 USD, 1957 USD]) than those of IG patients.

CONCLUSIONS

Among adults with T2D, EQW initiators had lower odds of IP admission and lower medical costs in the 12 months after initiation than IG initiators. Higher total costs in EQW patients were driven by greater pharmacy costs.