Introduction

Diabetes is a degenerative chronic illness that affects adulthood and older, induced with the potential risk of hyperglycaemia. Raised glucose in blood, was main effect of unrestrained diabetes and through duration it leads to serious damage to many of the organ systems, especially the nerves and blood vessels.¹ (Figure 1)

Figure 1. Age groups Associated with raised fasting blood sugar in west Ethiopia, 2019. (p<0.05)

Non communicable illness formerly assumed as a disease of Western and the wealthy, but nowadays it affects all nations worldwide. The fact showed that the prevalence type2 diabetes (79%) has been rising more rapidly in lowand middle-income countries than in high-income countries. If not early treated diabetes can damage the heart, blood vessels, eyes, kidneys and nerves. Risk of heart attacks and strokes have 50%-75% increased among adults with diabetes.2,3 Diabetes retinopathy is an important cause of 2.6% of global blindness and arises as a result of long-term accumulated damage to the small blood vessels in the retina.4 Studies postulated that diabetes is among the leading causes of kidney failure.5

Fasting glucose intolerance or pre-diabetes is a grave health condition where blood sugar levels are higher than normal, but not high enough yet to be diagnosed as type 2 diabetes until FBS>126mg/dl.2 Approximately 88 million (33.33%) American adults have pre-diabetes. Of those, more than 84% don’t know they have it. Pre-diabetes puts you at increased risk of developing type 2 diabetes, heart diseases, and stroke.

Globally, the prevalence of type2 diabetes has been increasing among adults; 451 million people living with diabetes as of International diabetes Federation Atlas report in 2017, and projected to tall to 693 million by 2045.6 Based on inhabited the prevalence of diabetes higher in urban than rural area.7

Likewise, the prevalence of diabetes mellitus is growing among adult Ethiopian; as of world health organization 2000 projection by 2030, the magnitude of DM expected to be 1.8 million.8, 9 Studies from north Ethiopia, figure out about 2.3% in Gondar city and 10.2% in Bahir dar city 22 individuals lived with undiagnosed DM.10

Like to other world, study conducted in 2014 in Ethiopia showed, about 1,603,100(75.1%) of populations undiagnosed for diabetes mellitus. It is known that adults are still at the highest risk for developing type2 diabetes. In 2015, around 1.5 million new total diabetes cases were recorded among adults as the CDC’s 2017 National Diabetes Statistics Report. In 2015, adults aged 45 to 64 were the most diagnosed age group for diabetes; therefore, it is important to know which age group contributes towards its onset. In which age group is type 2 diabetes most likely to occur? The study aimed to investigate which age group most strongly associated with onset of diabetes in adults aged 41-64 years among urban residents conducted in study site.

Methods

Study area and period

The current study was performed purposively on urban residents in hub towns of west Ethiopia from February 1- 15, 2019, which is 328Km far from Addis Ababa.

Research design

A community based cross sectional study design was applied.

Populations

Adults 41-64 years lived more than six months in the city were included. While individuals on treatment for diabetes; pregnant, lactating; psychiatric conditions; ill; use of weight-impacting medication and physically disables was excluded.

Sample and Sampling techniques

The sample size was calculated by taking prevalence of dependent variable among healthy Ethiopian adults. The most common component of metabolic syndrome is abdominal obesity (19.6%) in Ethiopia.14 Therefore, considering 5% margin error, a confidence level of 95% and 10% gnawing away, finally 266 samples were researched.

Statistical data analysis and administration

For quality data, first it was checked for completeness and consistency, cleaned for outliers and missing values. Epi-Data version 3.1.2 was used for data entry and tracked to SPSS version 24 for analysis. Statistical analyses of the setting individuality and possible risks for raised blood glucose of samples were carried out. The results presented in frequencies with aid of tables and its association in chart.

Biomarker

To analyse the biomarker, from finger pluck blood specimen were collected as of standard.

Operational definitions

Raised fasting blood sugar (FBS≥126mg/dl) is defined as diabetes and FBS≥100-125mg/dl were pre-diabetes.15

Results

Participant’s characteristics

From two hundred sixty six study samples, 99 of them were males and 167females respectively. With age group, 145 in between 41-48 years, 77 in the 49-56 years and 44 in the 57- 64 years old. Out of undiagnosed samples, the estimated crude prevalence of newly diabetes was 7.14%. From this respondents majority (93.56%) of them had low physical activity, physically inactive population account 6.77%. With sex stratification, females’ account 4.51% diabetes and 2.63% of them were male. Regarding alcohol consumption, 24.81% were having history of risky alcohol drinking; of these 11.86% of them were current drunker. Current drinking increased the concentration of fasting plasma glucose. Using cross tabulation, physical inactive, female, and alcohol drinking being associated with raised fasting blood sugar. (Table1)

Prevalence of Diabetes

The prevalence of pre-diabetes (impaired fasting blood glucose) was 4.89% and 2.25% of the participants were diabetic patients. Six participants with elevated fasting blood glucose were referred to chronic care center ( Wollega University specialized Hospital).

Associated factors with diabetes

Trends in age-adjusted prevalence of undiagnosed diabetes including pre-diabetes among middle age adulthood in west Ethiopia in 2019 was 7.14%. From the three age groups of population, age between 40-48 years were highly (3.78%) affected. Meaning age of 40s was associated with onset of both pre-diabetes and diabetes. From healthier adult did not now having diabetes but diagnosed during study, prevalence of hyperglycemia peak at age in between 41-48 years group. The magnitude declined in between 49-64 years, but in general middle aged adulthood was the peak season for onset of diabetes (Table2).

In the binary logistic analysis adjusted for sex, high prevalence (3.78%) of fasting plasma glucose was registered in between 41-48 years old and with associated OR of 1.74 (.35,3.24) (Table3).

Associated factors with diabetes

Trends in age-adjusted prevalence of undiagnosed diabetes including pre-diabetes among middle age adulthood in west Ethiopia in 2019 was 7.14%. From the three age groups of population, age between 40-48 years were highly (3.78%) affected. Meaning age of 40s was associated with onset of both pre-diabetes and diabetes. From healthier adult did not now having diabetes but diagnosed during study, prevalence of hyperglycemia peak at age in between 41-48 years group. The magnitude declined in between 49-64 years, but in general middle aged adulthood was the peak season for onset of diabetes (Table3).

In the binary logistic analysis adjusted for sex, high prevalence (3.78%) of fasting plasma glucose was registered in between 41-48 years old and with associated OR of 1.74 (.35,3.24) (Table3).

Discussion

The finding of this study confirmed that the prevalence of undiagnosed diabetes including pre-diabetes was 7.14%; of this 2.25% came with FBS>126mg/dl. This number is higher than results reported in different urban population of Ethiopia.

Any other issue is that at which age group (early, middle and late adulthood) was the prevalence of diabetes is high. From general diabetes risks, age is common risk factor for it. Aging speed up during middle age adulthood and decline in vision, hearing, immune-system functioning and end of menopause. Similar to study done in, his study also implies that middle aged adulthood is highly risk factor for type2 diabetes. Also studies argue age 45 and above are the onset of type2 DM and testing should begin at age 45 years, but the current study recommend age above 45 were candidate for complication like diabetes retinopathy.

Conclusion

Since peak age for onset of diabetes is 40-48 groups for middle age adults; it needs revision policy for screening before complications occur.

Ethical approval

This study was approved by the IBR of health institute, Jimma University (Reference No. IHRPGD/596/2019; January 1, 2019). Support letter was also taken from all concerned bodies. Prior to the first interview, participants were informed about objectives of the study and privacy during the interview.

Disclosure

There is no competing interest among authors.

Funding

Financial support was not received for the publication.

Author Contributions

All authors equally credited for the paper.

Acknowledgement

We acknowledge study subjects, data collectors, Nekemte Health Bureau, cheleleki health center and other structural bodies

References

1. World Health Organization, 2006. Definition and Diagnosis of Diabetes Mellitus and Intermediate Hyperglycemia: Report of a WHO/IDF Consultation. Geneva: Available at http:// whqlibdoc.who.int/ publications/2006/9241594934_eng.pdf Last accessed 12 June 2008
2. Centers for Disease Control and Prevention (CDC), National diabetes fact sheet: general information and national estimates on diabetes in the United States, 2007, (Atlanta GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, 2008).
3. Sarwar N, Gao P, Seshasai SR, et al. Diabetes mellitus, fasting blood glucose concentration, and risk of vascular disease: a collaborative meta-analysis of 102 prospective studies. Emerging Risk Factors Collaboration;2010:26:375:2215-2222.
4. Bourne RR, Stevens GA, White RA, et al. Causes of vision loss worldwide, 1990-2010: A systematic analysis. Lancet Global Health;2013:1:e339-e349.
5. Bethesda MD. 2014 USRDS annual data report: Epidemiology of kidney disease in the United States. United States Renal Data System. National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases; 2014:188–210
6. Cho N, Shaw J, Karuranga S, et al. IDF diabetes atlas: Global estimates of diabetes prevalence for 2017 and projections for 2045. Diabetes Res Clin Pract; 2018:138:271–28.
7. Ogurtsova K, da Rocha Fernandes J, Huang Y, et al. IDF diabetes atlas: Global estimates for the prevalence of diabetes for 2015 and 2040. Diabetes Res Clin Pract; 2017:128:40–50.
8. Shimels T. Prevalence and factors associated with diabetes mellitus and impaired fasting glucose level among members of federal police Commission residing in Addis Ababa, Ethiopia. BMC Endocr Disord;2016:16:68-14.
9. Belachew T, Asaminew B, Befekadu O, et al. Type II diabetes mellitus in Jimma  Town, South West Ethiopia. Eth J Health Sci;2007:17(2).
10. Worede A, Alemu S, Gelaw YA, et al. The prevalence of impaired fasting glucose and undiagnosed diabetes mellitus and associated risk factors among adults living in a rural Koladiba town, Northwest Ethiopia. BMC Res Notes;2017:10:251.