Comparing Efficacy and Safety of Insulin Detemir Plus Insulin Aspart and NPH Insulin Plus Human Soluble Insulin With or Without Metformin in Chinese Patients With Type 2 Diabetes

Inclusion Criteria

• •Type 2 diabetes mellitus (diagnosed clinically) for at 12 months or longer
• •Currently treated with basal insulin once daily or premixed insulin twice daily for at least 3 months with or without OAD(s), and total daily insulin dose less than 1.4 IU (U)/kg (If treated with metformin, unchanged total daily dose of at least 1000 mg for at least 3 months)
• •Body Mass Index (BMI) equal to 40 kg/m\^2 or below
• •HbA1c (glycosylated haemoglobin A1c) between 7.0% and 10.0% by central laboratory analysis
• •Plan to be admitted for optimising glycaemic control at least 2 days prior to the randomisation