Data has been collected from English General Practitioners since 1998 from over 400,000 patients. The algorithms are based on variables that patients are likely to know or that can be found from asking your GP. Knowing your risk could be worthwhile so you would know to intensify your control and monitor your condition more stringently.
For clinicians, complication risk could enable screening programs to be tailored to an individual’s need for support and the more rational use of scarce resources. Retinopathy could be done more frequently than once a year for those who need it and less frequently than once a year for those who do not. Those at higher risk of amputation might benefit from a proactive targeted program to prevent lower extremity amputation (including more frequent checks, tailored patient education, specially designed protective footwear, and early reporting of foot injuries), as this has been shown to substantially reduce the risk of emergency admissions, use of antibiotics, foot operations, and lower limb amputation compared with usual practice.
I found this diabetes complication calculator at the excellent site co run by Dr. Katharine Morrison which can be found here. How accurate this tool is, is open to debate, but if it is a good indicator for future complications, as a type two diabetic I would be happy with the results it gave me. Let's face it, all diabetics have a higher risk of complications, but we can drastically improve our chances of not succumbing to serious complications by holding excellent blood glucose numbers.