Globally, type 2 diabetes accounts for the majority of deaths, sufferings and burden to individuals and health care services . There is a wealth of evidence to prove that high quality structured diabetes self-management education (DSME) can have significant effect on health outcome and enhance patients’ quality of life. . This summative report aims at reviewing the evidence for the benefits of structured education in Type 2 diabetes.
DSME is the cornerstone to successful everyday diabetes management and can be transformative for individuals suffering from diabetes . This is evident in a systematic review of group-based education for patients with Type 2 diabetes in which 21 randomised controlled trials (RCTs) on diabetes structured education were assessed. This study revealed major improvement in participants’ knowledge about diabetes .
CLINICAL OUTCOME, SELF-MANAGEMENT AND BEHAVIOR CHANGE
DSME programmes have also shown major improvement in glycemic control and diabetes outcomes. Norris et al.  demonstrated that HbA1c levels decreased by 0.76% in participants who undertook DSME. Chrvala et al.  also reviewed existing literature and found similar reductions in HbA1c, with the greatest reduction of 0.88% in both individual and group setting for participants who completed DSME. Nonetheless, in the former studies the effect of DSME was not sustainable long after intervention amongst participants in comparison with the latter. This is quite substantial as the United Kingdom Prospective Diabetes Study (UKPDS) demonstrated that even a 0.9% decrease in HbA1c is associated with reductions in micro-vascular complications, diabetes-related mortality and all-cause mortality .
In the UK, DESMOND’s (Diabetes Education and Self-Management for On-going and Newly Diagnosed) intervention has yielded similar results. Khunti et al.  reported a 1.49% decrease in HbA1c after 12 months and a sustained decrease after 3 years (-1.32%). However, there were no significant differences in other biomedical factors such as blood pressure and 10 year cardiovascular disease risk. In similar terms the reviews by DESMOND and 8 showed that greater exposure to structured education was linked to better glycemic control. An Italian based intervention, ROMEO (Rethink Organization to iMprove Education and Outcomes), built on the efforts of these earlier studies to develop a lifestyle-change education programme focusing on metabolic control, which was carried out over a longer duration of 2 years. The findings demonstrated that the participants in the ROMEO study had improved HbA1C, lipid profile, blood pressure and BMI than in control groups . This suggests that an on-going model of structured education may result in improvements in glycemic control as well as other biomedical factors, which can likely lead to less long term complications.In addition to improving health outcomes in individuals with type 2 diabetes, DESMOND’s programmes also showed that structured education was beneficial in helping participants self-manage their diabetes and change health behaviors .
Examined this and found that after 12 months, the odds of having stopped smoking were up to 3.5 times higher in the intervention group than the control group. Positive results were also seen in areas of physical activities and diet change. Rygg et al.  in their study “examined the experience of participants in DSME in relation to change in diet and physical activity and the generating learning process that facilitated this change”. Their findings revealed that participants experienced a life of more confidence, security, increased control and well-being. The participants also experienced significant improvement in their diet and physical activity 6 months after completing the DSME programme. Similar findings of improved diet was reported by X-PERT programmes  and significant increase in the frequency of physical activity was reported by Daavies et al.  in their RCTs. X-PERT programmes also showed positive results in the area of self-management of blood glucose (SMBG) although, increase in SMBG only lasted for 4 months. Results after 14 months revealed no significant difference between participants and the control group . Nevertheless, The Diabetes Equity Project (DEP), in their study, confirmed improvement in regularity of SMBG which lasted 12 months. SMBG and results of other activities indicated increased competence in managing their diabetes.
These education programs did not specifically measure adherence to medical treatment and care, though the positive results would suggest that overall adherence improved. Van Netten et al.  in their systematic review of 30 studies with 19 RCTs revealed that DSME may have no impact in improving foot care behavior.
SELF-DETERMINATION AND PSYCHOSOCIAL ADJUSTMENT
Khunti et al.  in his research has conclusively proven that well-structured education programs have contributed tremendously towards self-determination and mental adjustments in patients with diabetes. This is corroborated with the study from Essien et al.  which indicated that DSME and social support has positive effect on self-efficacy and patient’s empowerment. There are also studies suggesting that DSME has proven to promote healthy coping mechanisms and decrease diabetes related distress and depression in their studies evidence significant improvement of quality of life for participants with diabetes related stress after completing the DSME [8,14,15].
Although many studies have shown that structured education can cause significant improvement in lifestyle, clinical and psychosocial outcomes; its role in the prevention of diabetes complications is an area of emerging research.
An early study by Nicolucci et al.  showed that complications such as; critical limb ischemia, amputation, chronic renal failure, dialysis treatment, proliferative retinopathy and blindness can occur approximately 4 times more often in diabetic individuals with no education.
A more recent study that looked at the effects of glycemic control and incidence of cardiovascular complications showed that Patient Empowerment Programme participants were associated with lower incidence of first micro-vascular event and nephropathy .
The population-based cohort analysis study of Patient Empowerment Programme by Wong et al.  in obese type 2 diabetes patients again revealed that Patient Empowerment Programme participants had lesser incidence rates of all-cause mortality and first macro-vascular or micro-vascular disease events from diabetes.
A systematic review of literature from 2001 to 2011 by Nazar et al.  revealed that diabetes complications could be minimized by developing enhanced diabetes knowledge and education to treat diabetes at the right time. This can in turn reduce morbidity and mortality amongst patients with diabetes. These studies further explored that amputation rates can be reduced through DSME which in turn can result in huge cost savings.
A long-term study with 13 year follow up investigated the impact gender may have on diabetes outcomes and found that structured education was able to reduce mortality and morbidity in women but not in men .
Another systematic review and meta-analysis by He et al.  also suggested that DSME can reduce all-cause mortality risk in type 2 diabetic patients with risk reduction estimated to be 4 per 1000 person less yearly.
UTILISATION OF HEALTH CARE SERVICES
Although there is a wealth of evidence to prove that DSME can improve the health outcome and life quality for the individual with Type 2 diabetes, there is very limited recent research to prove that DSME can minimise the use of healthcare services.
Norris et al.  in a systematic review of five studies only reported one study that experienced reduction in emergency room visits four months after receiving DSME. Their findings from four other studies on admissions outcomes and hospital length of stay showed no major difference between participants who had DSME and the control group. Greisinger et al.  reviewed one study that covered hospitalizations between 1993 and 2001 and concluded that patients with low income served by primary healthcare could react differently to these services than patients with high-income. There was no significant reduction in the use of eye specialist services as reported by Norris et al. .
DELIVERY MODE AND COST EFFECTIVENESS
DSME can be delivered by nurses, physicians, specialist and other healthcare professionals in hospitals, community, outpatient clinics, diabetes centres and in primary care settings. DSME can be delivered as a group or one- to-one session depending on the individual’s needs. Both groups and individual education have shown to have significant improvements in participants’ clinical outcome and lifestyle changes according to systematic review studies carried out by Chrvala et al.  and Van Netten et al. . According to Van Netten et al. , the yearly cost for each participant without labor and admin in the X-PERT structured programme was £26. On average, one medication cost £433 yearly. However, after completing the DSME with people having better outcome, it is estimated that the cost for medication savings was £56,723 for 432 diabetic patients. Hence, over £367 million could be saved yearly if all 2.8 million patients with diabetes in the UK participated in X-PERT programmes.
In conclusion, this essay has examined the review of the benefits of structured education in type 2 diabetes in relation to increasing patients’ knowledge, self-management, behavior change, clinical outcome, healthcare service utilisation, long term outcomes, psychological adjustment and self-determination. It further looked into the effectiveness of the delivery modes of type 2 diabetes structured education and also discussed the cost effectiveness and socio-economic implication of type 2 diabetes structured education. In the studies reviewed, there is no concrete evidence that diabetes structured education may reduce the use of healthcare service and 10 year cardiovascular risk. Nonetheless, there is substantial evidence that diabetes structured education can improve the general heath outcome of individuals with type 2 diabetes especially in areas such as physical activities, diet, medication adherence, smoke cessation, glycemic control as well as the psychosocial well-being of the individual with type 2 diabetes. Diabetes structured education can also reduce the huge cost on both individuals and health care services.
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