The prevalence of depression in white-European and South-Asian people with impaired glucose regulation and screen-detected type 2 diabetes mellitus

Association between prediabetes and depression: A meta-analysis

BACKGROUND

Previous studies evaluating the association between prediabetes and depression have shown inconsistent results. Consequently, the aim of the systematic review and meta-analysis was to investigate whether prediabetes is associated with depression in the general population.

METHODS

Relevant observational studies were obtained by searching the Medline, Web of Science, and Embase databases. A random-effects model was utilized to pool the results by incorporating the influence of heterogeneity. Multiple subgroup analysis was performed to evaluate the influence of the study characteristics on the outcome.

RESULTS

Sixteen large-scale cross-sectional studies involving 322,863 participants were included. Among the total participants, 82,154 (25.4%) had prediabetes. The pooled results showed that prediabetes was associated with a higher prevalence of depression in this population (odds ratio [OR]: 1.16, 95% confidence interval [CI]: 1.05 to 1.28, p = 0.003; I2 = 58%). Subgroup analysis showed a stronger association between prediabetes and depression in younger subjects (<50 years old, OR: 1.25, 95% CI: 1.04 to 1.50) than that in older subjects (≥50 years old, OR: 1.05, 95% CI: 1.10 to 1.10; p for subgroup difference = 0.03). Other study characteristics, such as the study country, sex of the participants, definition of prediabetes, methods for the detection of depression, and study quality score, did not seem to significantly affect the results (p for subgroup difference all > 0.05).

CONCLUSIONS

Prediabetes may be associated with a slightly higher prevalence of depression in the general population, particularly in subjects aged <50 years old.

Improving movement behavior in office workers: effects of two multi-level cluster-RCT interventions on mental health

BACKGROUND

We have previously reported on the design and efficacy of two cluster-randomized multi-level workplace interventions, attempting to decrease sedentary behavior (SED) or increase moderate to vigorous physical activity (MVPA) among office workers to improve mental health outcomes. The aim of this study was to investigate intervention effects on mental health outcomes, i.e., mental wellbeing, depression or anxiety symptoms, and stress immediately after the 6-month intervention period.

METHODS

Teams of 263 office workers were cluster-randomized to one of two interventions or a waitlist control group. The PA intervention (iPA) focused on increasing MVPA and the SED intervention (iSED) on reducing SED. Both multi-level interventions targeted individual office workers and their social, physical, and organizational work environment, incorporating counseling based on cognitive behavioral therapy and motivational interviewing. Mental health outcomes were assessed using validated questionnaires before and immediately after the intervention. Intervention effects were analyzed using linear mixed effects models.

RESULTS

Participants were mostly female and highly educated, with a mean age of 42 years and had favorable levels of mental health at baseline. Mental wellbeing improved for the iSED group (β = 8, 95% CI 1 to 15, p = 0.030) but not for the iPA group (β = 6, 95% CI -1 to 12, p = 0.072) compared to the control group. No effects were found for depression or anxiety symptoms or stress.

CONCLUSIONS

The multi-level interventions improved mental wellbeing among this population of office workers, reaching statistical significance in the iSED group. The size of the effect can be regarded meaningful, considering favorable mental health and high PA level at baseline. Thus, workplace interventions that provide support on multiple levels appear to have potential for improving mental wellbeing, but not reducing ill-health variables, among healthy office workers. More research is needed to understand the mechanisms through which such improvements can be achieved and to identify the most effective intervention components.

TRIAL REGISTRATION

ISRCTN92968402 (27 February 2018).

Dynamic relationships between depressive symptoms and insulin resistance over 20 years of adulthood

BACKGROUND

Bidirectional longitudinal relationships between depression and diabetes have been observed, but the dominant direction of their temporal relationships remains controversial.

METHODS

The random-intercept cross-lagged panel model decomposes observed variables into a latent intercept representing the traits, and occasion-specific latent 'state' variables. This permits correlations to be assessed between the traits, while longitudinal 'cross-lagged' associations and cross-sectional correlations can be assessed between occasion-specific latent variables. We examined dynamic relationships between depressive symptoms and insulin resistance across five visits over 20 years of adulthood in the population-based Coronary Artery Risk Development in Young Adults (CARDIA) study. Possible differences based on population group (Black v. White participants), sex and years of education were tested. Depressive symptoms and insulin resistance were quantified using the Center for Epidemiologic Studies Depression (CES-D) scale and the homeostatic model assessment for insulin resistance (HOMA-IR), respectively.

RESULTS

Among 4044 participants (baseline mean age 34.9 ± 3.7 years, 53% women, 51% Black participants), HOMA-IR and CES-D traits were weakly correlated (r = 0.081, p = 0.002). Some occasion-specific correlations, but no cross-lagged associations were observed overall. Longitudinal dynamics of these relationships differed by population groups such that HOMA-IR at age 50 was associated with CES-D score at age 55 (β = 0.076, p = 0.038) in White participants only. Longitudinal dynamics were consistent between sexes and based on education.

CONCLUSIONS

The relationship between depressive symptoms and insulin resistance was best characterized by weak correlations between occasion-specific states and enduring traits, with weak evidence that insulin resistance might be temporally associated with subsequent depressive symptoms among White participants later in adulthood.

Impaired glucose regulation, depressive symptoms, and health-related quality of life

INTRODUCTION

This study aims to investigate whether the associations between impaired glucose regulation and health-related quality of life are modified by severity or type of depressive symptoms.

RESEARCH DESIGN AND METHODS

For this cross-sectional study, we included 1939 individuals (mean age 61.5 years) from the Helsinki Birth Cohort Study. Between 2001 and 2004, a standard 2-hour 75 g oral glucose tolerance test was applied to define normoglycemia, pre-diabetes, and newly diagnosed diabetes. Information on previously diagnosed diabetes was collected from national registers and questionnaires. Pre-diabetes was defined as having either impaired fasting glucose or impaired glucose tolerance. The Mental and Physical Component Scores of health-related quality of life were assessed with Short Form-36. Beck's Depression Inventory was employed to investigate the severity of depressive symptoms and to define minimal (depression score <10), non-melancholic, and melancholic types of depression. We analyzed data with general linear models adjusted for sex, age, lifestyle factors, comorbidities, and body mass index.

RESULTS

Glucose regulation subgroups, especially previously known diabetes, were associated with lower Physical Component Score (p=0.001) and higher depression score (p=0.015), but not with the Mental Component Score (p=0.189). Non-melancholic depression was associated with lower Physical and Mental Component Scores compared with those with depression score <10 and melancholic depression (p<0.001), independently of glucose regulation status (p for glucose regulation status by depression type interaction >0.54).

CONCLUSIONS

Non-melancholic type of depression and previously known diabetes are independently associated with lower health-related quality of life. This should be appraised in long-term treatment of diabetes and when treating non-melancholic depressive symptoms to maintain a higher health-related quality of life.

Depression and Diabetes Distress in South Asian Adults Living in Low- and Middle-Income Countries: A Scoping Review

OBJECTIVES

In this study, we conducted a scoping review to identify the prevalence of both depression and diabetes distress in patients with type 2 diabetes in low- and middle-income countries in South Asia.

METHODS

This scoping review was grounded in the methodology of Arksey and O'Malley by searching for relevant studies using Ovid MEDLINE, PsycINFO and Cumulative Index of Nursing and Allied Health Literature databases, as well as grey literature sources and hand searches. Two reviewers independently screened and extracted data from articles that met the inclusion criteria.

RESULTS

A total of 46 studies were included, with only 1 addressing both depression and diabetes distress. We present 42 total articles on depression and 5 on diabetes distress. The prevalence of type 2 diabetes and elevated depressive symptoms ranged from 11.6% to 67.5%, whereas the prevalence of diabetes distress ranged from 18.0% to 76.2%.

CONCLUSIONS

The prevalence of elevated depressive symptoms was found to be much higher than that reported in data from high-income countries and in data on South Asians living in high-income countries. Diabetes distress was found to be lower compared with other studies; however, the scarcity of data makes this observation inconclusive. Variations in depression inventories, lack of culturally tailored inventories and the focus on urban clinic-based populations are identified as limitations and areas requiring further research. Our review provides evidence for the need of increased mental health screening and treatment in diabetes care in South Asian countries.

Association of depression and anxiety with clinical, sociodemographic, lifestyle and environmental factors in South Asian and white European individuals at high risk of diabetes

AIM

To investigate the prevalence and correlates of depressive and anxiety symptoms within South Asian and white European populations at high risk of developing Type 2 diabetes.

METHODS

Data were collected at baseline, and at 12, 24 and 36 months from 1429 white European individuals (age 64±7 years, 35.8% women) and 160 South Asian individuals (age 59±9 years, 30.6% women) who were at high risk of Type 2 diabetes and who took part in two Type 2 diabetes prevention trials in Leicestershire, UK. The Hospital Anxiety and Depression Scale was administered during each study visit. Clinical, sociodemographic, lifestyle and environmental data were collected.

RESULTS

At baseline, the burden of depressive symptoms varied by ethnic group and gender, with 9.9% of white European men, 14.9% of white European women, 23.6% of South Asian men and 29.2% of South Asian women exceeding the cut-off score for mild-to-severe depression. During the course of the study and after adjustment for clinical, sociodemographic, lifestyle and environmental factors, depressive symptoms remained higher in the South Asian compared to the white European participants [score higher by 1.5, 95% CI 0.9-2.1]. Levels of anxiety were also higher in the South Asian participants, although associations were attenuated after adjustment. Social deprivation, BMI, proximity to fast-food outlets and physical activity were correlates for depression in both the South Asian and white European participants.

CONCLUSIONS

A higher burden of depressive symptoms was consistently evident among the South Asian individuals, even after adjustment for multiple covariates. It is important to understand both the reasons why these differences are present, to help reduce health inequalities, and whether higher levels of depressive symptoms affect the uptake of and retention rates in diabetes prevention programmes in South Asian communities.

Glucose status and depressive symptoms: a cohort study of elderly people in northwest Finland

Objective: To assess the association between depressive symptoms and impaired glucose metabolism in the elderly population in arctic latitudes. Design: A population-based study. Setting. Community. Subjects: The study population consisted of 1,830 subjects born between the years 1915 and 1958 in the northernmost part of Finland, the Muonio-Enontekiö district, who participated in a health survey during 1974-1984. In 2014, a health questionnaire was sent to 1,037 subjects, and 757 participants (73%) answered it. Those (n = 629) living in the Muonio-Enontekiö district undergone a clinical examination in 2014 and 2015 including blood collections. Main outcome measures: Depressive symptoms defined by the Beck Depression Inventory II (BDI II) with a cut-off point of 14. Different diabetic states based on WHO's classification criteria defined by fasting plasma glucose and ADA's criteria by glycosylated haemoglobin (HbA1c) values. Results: According to logistic regression analysis, depressive symptoms (BDI-II ≥ 14) were associated statistically significantly with previously known type 2 diabetes, the odds ratio (OR) being 4.33 (95% CI 1.53-14.14). Regarding prediabetic fasting glucose/HbA1c values, the corresponding OR was 2.94 (95% CI 1.17-8.94). The prevalence of depressive symptoms (BDI-II ≥ 14) was 7.1%, (men 9.7% and women 5.4%) and 13.7% (men 9.9% and women 17.0%) in subjects living in Muonio-Enontekiö district and in those who had moved away from there, respectively. Conclusions: The association of depressive symptoms between prediabetes and diabetes seems to be present also in the northernmost latitudes of the world.

The prevalence of comorbid depression in patients with type 2 diabetes: an updated systematic review and meta-analysis on huge number of observational studies

AIMS

Depression is a common co-morbidity in patients with type 2 diabetes mellitus (T2DM). Untreated depression in these patients adversely affects self-care activities and other diabetes complications. The aim of this study is to estimate the prevalence of depression among patients with T2DM by conducting a meta-analysis of observational studies.

METHODS

MEDLINE, Web of Science, Science Direct, and Google Scholar databases were searched for all observational studies that assessed depression in T2DM. Relevant articles were searched using the combination of Medical Subject Heading (MeSH) terms of "depression", "depressive disorder", and "diabetes mellitus" published between January 2007 and July 2018. Random effects model was used to estimate the weighted prevalence rates and 95% CI using "metaprop program in STATA 11".

RESULTS

In total, the 248 included studies (with 273 reported prevalence) identified 83,020,812 participants; of them, 23,245,827 (28%; 95% CI 27, 29) suffered from different severity levels of depressive disorders. The prevalence of depression was separately reported in 137,372 males and 134,332 females. Of them, 31,396 males (23%, 95% CI: 20, 26) and 45,673 females (34%, 95% CI: 31, 38) were depressed. Compared with global estimate, depression prevalence was lower in Europe (24%) and Africa (27%), but higher in Australia (29%) and Asia (32%). The prevalence in America was equal to the estimated prevalence in the world (28%). Depression was more common in subjects younger than 65 compared with elderlies (31% vs. 21%).

CONCLUSION

Our findings demonstrated that almost one in four adults with T2DM experienced depression. Given the high prevalence of depressive disorders in diabetic patients, screening these patients for co-morbid depression and its relevant risk factors is highly recommended.

Prevalence of Depression and Associated Factors among Patients with Type 2 Diabetes Attending the Diabetic Clinic at a Tertiary Care Hospital in Sri Lanka: A Descriptive Study

Background

Research focusing on the psychological aspect of diabetes is limited in Sri Lanka.

Aim

Determine the prevalence of depression among patients with type 2 diabetes mellitus (T2DM) attending an out-patient clinic at a tertiary care hospital in Colombo, the capital of Sri Lanka.

Methods

A descriptive cross-sectional study carried out among patients diagnosed with T2DM. Pregnant and patients with a prior psychiatric history were excluded. Depression assessed using validated Sinhala and Tamil version of the Beck's Depression Index. Sociodemographic data and health related data were obtained from interviewer-based questionnaires and health records.

Results

Of the 3000 patients, 72.7% were female. Mean age was 58.3 ±10.3 years and mean duration of diabetes 10.8 ± 7.3 years. Percentage of depression was 5.9% in the entire patient population with mild, moderate, and severe depression in 4.0%, 1.6%, and 0.3%, respectively. In multiple logistic regression, depression was significantly associated with female gender (OR 2.63, 95% CI 1.26-5.46; P=0.009), living without a spouse (single/divorced/widowed) (OR 1.83, 95% CI 1.12-2.98; P=0.01), lower education level (OR 1.92, 95% CI 1.14-3.22; P=0.01), and peripheral neuropathy (OR 1.79, 95% CI 1.00-3.18; P=0.04). Only 13.3% of the respondents said that doctors have ever inquired to their mental well-being.

Conclusion

Depression was low in prevalence comparative to neighboring countries in the region. Patients were much more affected by the social factors than disease related factors. An individualized holistic approach taking psychosocial issues to consideration should be focused in the comprehensive plan of management.

Association between depression and persistence with oral antihyperglycemic drugs in type 2 diabetes mellitus patients in Germany

The goal of the present work was to study the impact of depression on persistence with oral antihyperglycemic drugs in type 2 diabetes mellitus (T2DM) patients followed in general practices in Germany. We included T2DM patients who were treated with oral antihyperglycemic drugs and had an initial diagnosis of depression from 1262 general practices in Germany between January 2013 and December 2015. T2DM controls without depression were included and matched (1:1) to T2DM cases with depression based on age, sex, physician, and initial antihyperglycemic therapy, using a propensity score method. Persistence was estimated as therapy duration without treatment disruption, which was defined as at least 3 months without oral antihyperglycemic drugs. This study included 6449 T2DM patients with depression and 6449 T2DM patients without depression. After 12 months of follow-up, 67.5% of cases with depression and 69.7% of controls without depression were found to be persistent with oral antihyperglycemic drugs (p = 0.627). Depression had no significant impact on persistence with antihyperglycemic drugs in the entire population (HR = 1.03) or in the different subgroups (HRs ranging from 1.00 to 1.06). Depression was not significantly associated with persistence with antihyperglycemic drugs in Germany.

Are Ethnic Disparities in HbA1c Levels Explained by Mental Wellbeing? Analysis of Population-Based Data from the Health Survey for England

Aims

It is unclear how ethnic differences in HbA_1c levels are affected by individual variations in mental wellbeing. Thus, the aim of this study was to assess the extent to which HbA_1c disparities between Caucasian and South Asian adults are mediated by various aspects of positive psychological functioning.

Methods

Data from the 2014 Health Survey for England was analysed using bootstrapping methods. A total of 3894 UK residents with HbA_1c data were eligible to participate. Mental wellbeing was assessed using the Warwick-Edinburgh Mental Well-being Scale. To reduce bias BMI, blood pressure, diabetes status, and other factors were treated as covariates.

Results

Ethnicity directly predicted blood sugar control (unadjusted coefficient −2.15; 95% CI −3.64, −0.67), with Caucasians generating lower average HbA_1c levels (37.68 mmol/mol (5.6%)) compared to South Asians (39.87 mmol/mol (5.8%)). This association was mediated by positive mental wellbeing, specifically concerning perceived vigour (unadjusted effect 0.30; 95% CI 0.13, 0.58): South Asians felt more energetic than Caucasians (unadjusted coefficient −0.32; 95% CI −0.49, −0.16), and greater perceived energy predicted lower HbA_1c levels (unadjusted coefficient −0.92; 95% CI −1.29, −0.55). This mediator effect accounted for just over 14% of the HbA_1c variance and was negated after adjusting for BMI.

Conclusions

Caucasian experience better HbA_1c levels compared with their South Asian counterparts. However, this association is partly confounded by individual differences in perceived energy levels, which is implicated in better glycaemic control, and appears to serve a protective function in South Asians.

Risk of depressive symptoms associated with impaired glucose metabolism, newly diagnosed diabetes, and previously diagnosed diabetes: a meta-analysis of prospective cohort studies

AIMS

Patients with diabetes had a higher risk of developing depressive symptoms. Little is known about the risk of depressive symptoms associated with different glucose metabolism status. We performed a meta-analysis of prospective cohort studies to investigate the risk of depressive symptoms among individuals with impaired glucose metabolism (IGM), newly diagnosed diabetes (NDM), and previously diagnosed diabetes (PDM), compared with those with normal glucose metabolism (NGM), and further examined the influence of diabetes-related comorbidities on the association.

METHODS

PubMed and EMBASE were searched for relevant studies through 5 September 2015. The random-effects model was used to calculated overall relative risk (RR) and confidence interval (CI). Three separated meta-analyses were conducted by estimating the risk of depressive symptoms among people with IGM, NDM, and PDM, with NGM as a common reference category. Secondary analyses were conducted to examine whether adjustment for diabetes-related comorbidities affected the association.

RESULTS

Five prospective cohort studies were included in the analyses, with a total of 18,051 participants involved. People with IGM (RR = 1.08, 95 % CI 0.84-1.38) and NDM (RR = 1.07, 95 % CI 0.74-1.55) were not associated with risk of developing depressive symptoms, whereas patients with PDM were associated with a modest increased risk of depressive symptoms (RR = 1.29, 95 % CI 1.03-1.63), after adjustment for demographic/socioeconomic factors. The risk of depressive symptoms associated with PDM was attenuated to be non-significant after pooling RRs that were adjusted for diabetes-related comorbidities.

CONCLUSIONS

Our meta-analysis suggested people with PDM, but not IGM or NDM had an increased risk of developing depressive symptoms, and the risk was partially explained by diabetes-related comorbidities. Our findings indicated that routine diabetes care should put more emphasis on psychological problems of diabetic patients with complications.

Association of depression with pre-diabetes, undiagnosed diabetes, and previously diagnosed diabetes: a meta-analysis

We performed a meta-analysis to analyze the associations of depression with pre-diabetes (PreDM), undiagnosed diabetes (UDM), and previously diagnosed diabetes (PDM), and whether the association was affected by important study characteristics. We searched relevant articles published in PubMed and EMBASE up to August, 2015. Studies reporting cross-sectional associations of depression with PreDM, UDM, or PDM compared with normal glucose metabolism (NGM) were included. Odds ratios (ORs) were pooled with random-effect and fixed-effect models. Subgroup analyses by sex, study mean age, different degrees of adjustment, publication year, quality score, and depression assessment scales were also performed. Twenty studies were eligible and included in current analysis. Summary estimates showed that compared with NGM individuals, prevalence of depression was moderately increased in PreDM (random-effect odds ratio (OR) 1.11, 95 % confidence interval (CI) 1.03-1.19) and UDM (OR 1.27, 95 % CI 1.02-1.59), and markedly increased in PDM (OR 1.80, 95 % CI 1.40-2.31). Subgroup analyses showed that the positive association remained only among studies with mean age <60 years old but not among those with mean age ≥60 years old. Summary estimates of ORs with cardiovascular disease adjustment substantially attenuated the association. Our findings suggested that risk of prevalent depression was gradually increased with the deterioration of glucose metabolism among younger age groups but not among older age groups. Comorbid cardiovascular diseases might be an important intermediate factor underlying the association between depression and diabetes.

Change in well-being amongst participants in a four-month pedometer-based workplace health program

BACKGROUND

There is increasing uptake of workplace physical activity programs to prevent chronic disease. While they are frequently evaluated for improvement in biomedical risk factors there has been little evaluation of additional benefits for psychosocial health. We aimed to evaluate whether participation in a four-month, team-based, pedometer-based workplace health program known to improve biomedical risk factors is associated with an improvement in well-being, immediately after the program and eight-months after program completion.

METHODS

At baseline (2008), 762 adults (aged 40 ± 10 SD years, 42% male) employed in primarily sedentary occupations and voluntarily enrolled in a physical activity program were recruited from ten Australian worksites. Data was collected at baseline, at the completion of the four-month program and eight-months after program completion. The outcome was the WHO-Five Well-being Index (WHO-5), a self-administered five-item scale that can be dichotomised as 'poor' (less than 52%) or 'positive' (more than or equal to 52%) well-being.

RESULTS

At baseline, 75% of participants had positive well-being (mean: 60 ± 19 SD WHO-5 units). On average, well-being improved immediately after the health program (+3.5 units, p < 0.001) and was sustained eight-months later (+3.4 units from baseline, p < 0.001). In the 25% with poor well-being at baseline, 49.5% moved into the positive well-being category immediately after program completion, sustained eight-months later (p < 0.001).

CONCLUSIONS

Clinically relevant immediate and sustained improvements in well-being were observed after participation in the health program. These results suggest that participation in workplace programs, such as the one evaluated here, also has the potential to improve well-being.

Depression and type 2 diabetes: a causal association?

There is a controversy regarding whether depression and type 2 diabetes are causally linked. To assess this issue, we review key findings for the association between depression and diabetes, and its underlying mechanisms. Findings from meta-analyses of cohort studies show a modestly sized bidirectional association between depression and type 2 diabetes (ie, depression predicts diabetes onset and diabetes predicts future depression). However, depression-related biological alterations in the hypothalamic-pituitary-adrenal cortex axis and the sympathetic nervous system, and subclinical inflammation, are not consistently linked with increased diabetes risk. The evidence for an association between depression and glycaemic traits (eg, glucose, insulin, insulin sensitivity, and insulin secretion) is also mixed. Diabetes increases the risk of depression to the same extent as do other chronic disorders (eg, cardiac diseases, osteoarthritis, lung disease, and poor hearing). At present, the available evidence suggests that pathophysiological changes preceding the onset of type 2 diabetes might not cause depression, nor might depression directly increase the risk of developing type 2 diabetes. Despite insufficient robust causal evidence, treating physicians should be aware of the co-occurrence of depression and type 2 diabetes.

Glycemia, insulin resistance, insulin secretion, and risk of depressive symptoms in middle age

OBJECTIVE

The extent to which abnormal glucose metabolism increases the risk of depression remains unclear. In this study, we investigated prospective associations of levels of fasting glucose and fasting insulin and indices of insulin resistance and secretion with subsequent new-onset depressive symptoms (DepS).

RESEARCH DESIGN AND METHODS

In this prospective cohort study of 3,145 adults from the Whitehall II Study (23.5% women, aged 60.6 ± 5.9 years), baseline examination included fasting glucose and insulin level, the homeostasis model assessment of insulin resistance (HOMA2-%IR), and the homeostasis model assessment of β-cell insulin secretion (HOMA2-%B). DepS (Center for Epidemiologic Studies Depression Scale ≥16 or use of antidepressive drugs) were assessed at baseline and at 5-year follow-up.

RESULTS

Over the 5-year follow-up, DepS developed in 142 men and 84 women. Women in the lowest quintile of insulin secretion (HOMA2-%B ≤55.3%) had 2.18 (95% CI 1.25-3.78) times higher odds of developing DepS than those with higher insulin secretion. This association was not accounted for by inflammatory markers, cortisol secretion, or menopausal status and hormone replacement therapy. Fasting insulin measures were not associated with DepS in men, and fasting glucose measures were not associated with new-onset DepS in either sex.

CONCLUSIONS

Low insulin secretion appears to be a risk factor for DepS in middle-aged women, although further work is required to confirm this finding.

The relationship between psychiatric symptoms and glycemic status in a Chinese population

With the exception of depression and anxiety, there has been no study designed to evaluate the association between other psychiatric symptoms and Type 2 diabetes. The aim of this study was to investigate the relationship between different psychiatric symptoms and diabetes as well as pre-diabetes (Pre-DM) in a Chinese population. Totally, 9561 participants without a history of diabetes, depression, psychosis, use of hypnotics, and abnormal thyroid function were enrolled. Psychiatric symptoms were measured by Brief Symptoms Rating Scale questionnaire, which consists of three global indices [General Severity Index (GSI), Total Number of Positive Symptoms (PST), and Positive Symptom Distress Index (PSDI)] and ten subscales, including somatization, obsession, interpersonal sensitivity, depression, anxiety, hostility, phobia, paranoid ideation, psychoticism and additional symptoms. Different glycemic statuses included normal glucose tolerance (NGT), Pre-DM, and newly-diagnosed diabetes (NDD) group. GSI, somatization, hostility, phobia, psychoticism, and additional symptoms were the factors positively associated with NDD as well as pre-DM in an age-adjusted model. After adjustments for age, gender, body mass index, educational level, hypertension, plasma triglycerides and creatinine, smoking, alcohol use, regular exercise, marital status, and family history of diabetes mellitus, the following psychiatric symptoms were independently related to both NDD and pre-DM: GSI, PST, somatization, obsession, interpersonal sensitivity, depression, anxiety, hostility, phobia, psychoticism, and additional symptoms. In addition to depression and anxiety, global indices of psychiatric symptoms and other subscales, including somatization, obsession, interpersonal sensitivity, hostility, phobia, psychoticism and additional symptoms, may have an impact on both diabetes and Pre-DM.

A study of association of depressive symptoms among the type 2 diabetic outpatients presenting to a tertiary care hospital

BACKGROUND

The prevalence of diabetes mellitus is increasing among Indian population over time. There are varying reports about the association of depression among type 2 diabetic individuals. However, there is limited data about this in India.

AIMS

To study the association of depression, demographic and socio-medical factors in type 2 diabetes patients.

SETTINGS AND DESIGN

Cross-sectional, epidemiological study.

MATERIALS AND METHODS

All the consenting type 2 diabetes mellitus patients attending to Medical OPD (n=210) were screened for symptoms of depression using beck depression inventory. All the participants were physically examined and a detailed psychiatric assessment were done. The relevant investigations were advised to identify comorbid conditions.

STATISTICAL ANALYSIS

Chi-square test with odd's ratio.

RESULTS

One-fourth of the screened diabetic patients were found to be having depression. Females and overweight individuals were found to have features of depression. Patients with long duration of diabetes and on combination of antidiabetic drugs were significantly associated with depression. Among depressed diabetics 25.9% were having Ischemic heart disease as a comorbid medical illness.

CONCLUSIONS

This study shows there is increased rate of depression among type 2 diabetic individuals. The interesting association of depression with several demographic and sociomedical factors have an important implication in type 2 diabetics.

Haemoglobin A1c, fasting glucose and future risk of elevated depressive symptoms over 2 years of follow-up in the English Longitudinal Study of Ageing

BACKGROUND

The cross-sectional association between impaired glucose/diabetes and depression is inconsistent. We examined the longitudinal associations between diabetes, indicators of glucose metabolism and depressive symptoms over 2 years of follow-up.

METHOD

Participants were 4338 men and women from the English Longitudinal Study of Ageing, a prospective study of community-dwelling older adults [aged 62.9 (s.d.=9.0) years, 45.2% men]. Depressive symptoms were assessed at baseline and after 2 years of follow-up using the eight-item Centre of Epidemiological Studies--Depression (CES-D) scale. Glycated haemoglobin (HbA1c) levels, fasting glucose and other biological and behavioural risk factors were also assessed at baseline.

RESULTS

Approximately 11.5% of the sample were categorized with elevated depressive symptoms at follow-up (a score ≥ 4 on the CES-D). There was an association between HbA1c and depressive symptoms at follow-up [per unit increase, odds ratio (OR) 1.17, 95% confidence interval (CI) 1.03-1.33] after adjustment for age and baseline CES-D. Cross-sectionally, the probability of depressive symptoms increased with increasing HbA1c levels until the value of 8.0% after which there was a plateau [p(curve)=0.03]. Compared with those with normal fasting glucose, participants with diabetes (confirmed through self-report or elevated fasting blood glucose) at baseline had an elevated risk of depressive symptoms at follow-up (OR 1.52, 95% CI 1.01-2.30) after adjusting for depressive symptoms at baseline, behavioural and sociodemographic variables, adiposity and inflammation.

CONCLUSIONS

These data suggest that poor glucose metabolism and diabetes are risk factors for future depression in older adults. There was no evidence of a U-shaped association.

Prevalence of depression in individuals with impaired glucose metabolism or undiagnosed diabetes: a systematic review and meta-analysis of the European Depression in Diabetes (EDID) Research Consortium

OBJECTIVE

Meta-analyses have shown that the risk for depression is elevated in type 2 diabetes. Whether this risk in individuals with impaired glucose metabolism (IGM) or undiagnosed diabetes (UDD) is elevated relative to normal glucose metabolism (NGM) or decreased relative to previously diagnosed type 2 diabetes (PDD) has not been the subject of a systematic review/meta-analysis. This study examined the prevalence of depression in IGM and UDD subjects relative to each other and to NGM and PDD subjects by reviewing the literature and conducting a meta-analysis of studies on this topic.

RESEARCH DESIGN AND METHODS

EMBASE and MEDLINE databases were searched for articles published up to May 2010. All studies that compared the prevalence of depression in subjects with IGM and UDD were included. Odds ratios (ORs) were calculated using fixed and random-effects models.

RESULTS

The meta-analysis showed that the risk for depression was not increased in IGM versus NGM subjects (OR 0.96, 95% CI 0.85-1.08). Risk for depression did not differ between individuals with UDD and individuals with either NGM (OR 0.94, 95% CI 0.71-1.25) or IGM (OR 1.16, 95% CI 0.88-1.54). Finally, individuals with IGM or UDD both had a significantly lower risk of depression than individuals with PDD (OR 0.59, 95% CI 0.48-0.73, and OR 0.57, 95% CI 0.45-0.74, respectively).

CONCLUSIONS

Results of this meta-analysis show that the risk of depression is similar for NGM, IGM, and UDD subjects. PDD subjects have an increased risk of depression relative to IGM and UDD subjects.

Association of depressive symptoms with impaired glucose regulation, screen-detected, and previously known type 2 diabetes: findings from the Finnish D2D Survey

OBJECTIVE

To study the association between impaired glucose regulation (IGR), screen-detected type 2 diabetes, and previously known diabetes and depressive symptoms.

RESEARCH DESIGN AND METHODS

Altogether, 2,712 participants from three hospital districts in Finland attended a health examination. Cutoff scores ≥10 and ≥16 in the 21-item Beck Depression Inventory (BDI-21) were used for depressive symptoms. The participants were defined as having known diabetes if they reported diabetes. An oral glucose tolerance test was used to detect normal glucose regulation (NGR), impaired fasting glucose (IFG), impaired glucose tolerance (IGT), and screen-detected diabetes. The participants were defined as having IGR if they had IFG or IGT.

RESULTS

Prevalence of depressive symptoms, defined as a BDI-21 cutoff score ≥10, was 14.4% for those with NGR, 13.7% for those with IGR, 14.8% for those with screen-detected diabetes, and 26.4% for those with previously known diabetes. The corresponding prevalences for a cutoff score ≥16 were 3.4, 3.4, 4.2, and 7.5%, respectively. Compared with NGR and adjusted for demographic, lifestyle, and biological factors, the odds ratios for IGR, screen-detected diabetes, and previously known diabetes were 0.91 (95% CI 0.69-1.20), 0.70 (0.45-1.08), and 1.35 (0.84-2.15), respectively, for a cutoff score ≥10. For a cutoff score ≥16, the corresponding odds ratios were 1.05 (0.62-1.76), 0.87 (0.40-1.90), and 1.56 (0.69-3.50), respectively.

CONCLUSIONS

Participants with diagnosed diabetes had a higher prevalence of depressive symptoms than participants with NGR, IGR, and previously unknown diabetes. When potential confounding factors were included in the analysis, previously known diabetes was not significantly associated with depressive symptoms.

Diagnosis of co-morbid axis-I psychiatric disorders among women with newly diagnosed, untreated endocrine disorders

OBJECTIVES

To determine the prevalence of major depressive disorder (MDD) and other selected axis-I disorders among women with newly diagnosed, untreated endocrine disorders.

METHODS

Two hundred and eighteen consecutive women, aged 18-65, with newly diagnosed, untreated endocrine disorders were referred for potential diagnosis of co-morbid axis-I disorders with the use of the Structured Clinical Interview for Axis I-Patient Edition (SCID-P). The SCID-P was re-administered after 12 weeks.

RESULTS

At baseline, 64 (29.3%) women met criteria for at least one axis-I disorder. Women who were diagnosed with hyperthyroidism were more likely to meet criteria for generalized anxiety disorder and panic disorder than women without hyperthyroidism. Nine of 154 (5.8 %) women who did not meet criteria for an axis-I disorder at baseline met criteria for at least one axis-I disorder during follow-up. Among them, the presence of diabetes mellitus was statistically correlated with a higher probability of developing major depressive disorder at follow-up.

CONCLUSIONS

Although preliminary, our findings are consistent with previous studies and suggest an increased prevalence of MDD and other axis-I disorders among women with newly diagnosed endocrine disorders, providing further evidence suggesting that women with endocrine abnormalities may be at increased risk of depression and/or anxiety disorders.

The prevalence of depressive symptoms in a white European and South Asian population with impaired glucose regulation and screen-detected Type 2 diabetes mellitus: a comparison of two screening tools

AIMS

To compare the identification of prevalent depressive symptoms by the World Health Organization-5 Wellbeing Index (WHO-5) and Centre for Epidemiological Studies Depression Scale (CES-D) for South Asian and white European people, male and female, attending a diabetes screening programme, and to explore the adequacy of the screening tools for this population. An additional aim was to further explore associations of depressive symptoms with impaired glucose regulation (IGR) and Type 2 diabetes mellitus (Type2 DM).

METHODS

Eight hundred and sixty-four white European (40-75 years old) and 290 South Asian people (25-75 years old) underwent an oral glucose tolerance test (OGTT), detailed history and anthropometric measurements and completed the WHO-5 and CES-D. Depressive symptoms were defined by a WHO-5 score <or= 13, and CES-D score >or= 16.

RESULTS

Unadjusted prevalence of depressive symptoms with the WHO-5, for people with Type2 DM was 42.3% (47.4% in white European; 28.6% in South Asian) and for IGR 30.7% (26% in white European; 45.8% in South Asian). With the CES-D, the prevalence in Type2 DM was 27.2% (25.4% in white European; 31.8% in South Asian) and for IGR 30.7% (27.8% in white European; 40.7% in South Asian). Statistically significant differences in the prevalence of depressive symptoms for sex or ethnicity were not identified. Odds ratios adjusted for age, sex and ethnicity showed no significant association of depression with Type2 DM or IGR, with either WHO-5 or CES-D. Agreement was moderate (kappa = 0.48, 95% confidence intervals 0.42-0.54), and reduced when identifying depressive symptoms in people with Type2 DM. For this group, a WHO-5 cut-point of <or= 10 was optimal.

CONCLUSIONS

Depressive symptoms, identified by WHO-5 or CES-D, were not significantly more prevalent in people with Type2 DM or IGR. The WHO-5 and CES-D differed in their identification of depressive symptoms in people with Type2 DM, though discrepancies between sex and ethnicity were not identified.

Diabetes prevalence, diabetes regimen and co-morbidity in depressed patients compared with non-depressed patients in primary care in the Netherlands

AIMS

To assess the prevalence of diabetes in depressed patients compared with non-depressed matched controls and to compare diabetes regimen and co-morbidity in depressed patients with diabetes vs. non-depressed patients with diabetes in primary care in the Netherlands.

METHODS

A retrospective case-control study over 3 years (2002-2004). Data for depressed patients (n = 7128) and non-depressed matched controls (n = 23,772) were available from an electronic medical record system of 20 general practices organized in one large primary care organization in the Netherlands. Matching was based on year and month of birth, sex and general practitioner. Diabetes, diabetes regimen (i.e. oral glucose medication, insulin or both) and co-morbidity were defined using Anatomical Therapeutic Chemical classification codes of delivered medication.

RESULTS

The prevalence of diabetes was 5.5% (n = 393) among depressed patients, which was 2.6 times higher than in non-depressed matched controls where the figure was 2.1% (n = 494; P < 0.001). Diabetes regimen, i.e. the proportions of subjects on oral glucose medication, insulin or both did not differ among depressed patients with diabetes (51, 27 and 22%, respectively) compared with non-depressed patients with diabetes (51, 30, 19%; P = 0.53). Co-morbidity was significantly more prevalent among depressed patient with diabetes than in non-depressed patients with diabetes.

CONCLUSIONS

Compared with non-depressed matched controls, adults with treated depression have almost three times higher rates of diabetes. Depressed patients with diabetes had more co-morbidities compared with non-depressed patients with diabetes, whereas diabetes regimen did not differ.

Depression, anxiety and glucose metabolism in the general dutch population: the new Hoorn study

Background

There is a well recognized association between depression and diabetes. However, there is little empirical data about the prevalence of depressive symptoms and anxiety among different groups of glucose metabolism in population based samples. The aim of this study was to determine whether the prevalence of increased levels of depression and anxiety is different between patients with type 2 diabetes and subjects with impaired glucose metabolism (IGM) and normal glucose metabolism (NGM).

Methodology/Principal Findings

Cross-sectional data from a population-based cohort study of 2667 residents, 1261 men and 1406 women aged 40–65 years from the Hoorn region, the Netherlands. Depressive symptoms and anxiety were measured using the Centre for Epidemiologic Studies Depression Scale (CES-D, score ≥16) and the Hospital Anxiety and Depression Scale – Anxiety Subscale (HADS-A, score ≥8), respectively. Glucose metabolism status was determined by oral glucose tolerance test. In the total study population the prevalence of depressive symptoms and anxiety for the NGM, IGM and type 2 diabetes were 12.5, 12.2 and 21.0% (P = 0.004) and 15.0, 15.3 and 19.9% (p = 0.216), respectively. In men, the prevalence of depressive symptoms was 7.7, 9.5 and 19.6% (p<0.001), and in women 16.4, 15.8 and 22.6 (p = 0.318), for participants with NGM, IGM and type 2 diabetes, respectively. Anxiety was not associated with glucose metabolism when stratified for sex. Intergroup differences (NGM vs. IGM and IGM vs. type 2 diabetes) revealed that higher prevalences of depressive symptoms are mainly manifested in participants with type 2 diabetes, and not in participants with IGM.

Conclusions

Depressive symptoms, but not anxiety are associated with glucose metabolism. This association is mainly determined by a higher prevalence of depressive symptoms in participants with type 2 diabetes and not in participants with IGM.