Diabetes Obes Metab. 2014 Mar 17. doi: 10.1111/dom.12288. [Epub ahead of print]:
Effectiveness and cost-effectiveness of 3-monthly versus 6-monthly monitoring of well-controlled type 2 diabetes patients: a pragmatic randomised controlled patient-preference equivalence trial in primary care (EFFIMODI study).
Wermeling PR1, Gorter KJ, Stellato RK, de Wit GA, Beulens JW, Rutten GE.

In this study of 2000 patients in the Netherlands, key clinical indicators were largely the same when well controlled patients with established and stable Type II diabetes were seen at six monthly intervals rather than three monthly.

“Patients with good cardiometabolic control and without preference for their monitoring frequency can visit the primary care physician less often. The cost-savings can be considerable.”