Improving glycemic control with insulin detemir using the 303 Algorithm in insulin naïve patients with type 2 diabetes: a subgroup analysis of the US PREDICTIVE 303 study

Curr Med Res Opin. 2008 Jan;24(1):11-20. doi: 10.1185/030079908x242755.


Objective: PREDICTIVE 303 was a 26-week, prospective, randomized, open-label, multi-center study in patients with type 2 diabetes that investigated whether patient-driven adjustments of insulin detemir doses using the 303 Algorithm achieved similar glycemic control compared to standard-of-care, physician-driven adjustments in doses. This post hoc sub-analysis evaluates insulin naïve patients on oral anti-diabetic drugs (OADs) who were directed to start on once-daily insulin detemir as add-on therapy to any other glucose-lowering regimens.

Methods: Patients in the 303 Algorithm group were instructed to adjust their detemir dose every 3 days based on mean fasting plasma glucose (FPG) values using a simple algorithm: mean FPG < 80 mg/dL, reduce dose by 3 units; between 80-110mg/dL, no change; > 110mg/dL, increase by 3 units. Physicians adjusted the detemir dose for patients in the Standard-of-care group according to their usual practice. No control insulin was used for comparison to insulin detemir.

Results: Reductions in glycosylated hemoglobin (HbA(1c)) from baseline were similar between those patients in the 303 Algorithm and Standard-of-care groups (-1.1 and -1.0%, respectively; between group p = 0.0933); patients in the 303 Algorithm group achieved a greater reduction in FPG. Patients in both groups experienced a similar, low rate of hypoglycemia. Over 95% and 92% of patients, respectively, used detemir once daily.

Conclusion: These data indicate that patients with type 2 diabetes naïve to insulin can effectively implement the 303 Algorithm to initiate and adjust a once-daily dose of insulin detemir to achieve improvements in glycemic control.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Algorithms*
  • Blood Glucose / drug effects*
  • Body Weight / drug effects
  • Circadian Rhythm
  • Diabetes Mellitus, Type 2 / drug therapy*
  • Drug Dosage Calculations*
  • Fasting / blood
  • Female
  • Glycated Hemoglobin A / analysis
  • Humans
  • Hypoglycemia / chemically induced
  • Hypoglycemic Agents / administration & dosage
  • Hypoglycemic Agents / adverse effects
  • Insulin / administration & dosage
  • Insulin / adverse effects
  • Insulin / analogs & derivatives*
  • Insulin Detemir
  • Insulin, Long-Acting
  • Male
  • Middle Aged
  • United States


  • Blood Glucose
  • Glycated Hemoglobin A
  • Hypoglycemic Agents
  • Insulin
  • Insulin, Long-Acting
  • hemoglobin A1c protein, human
  • Insulin Detemir