Background The effectiveness and safety of initiating biphasic insulin aspart 30 in patients who were poorly controlled on oral glucose-lowering drugs were studied in randomized controlled trials,while results from clinical practice remain limited.This subgroup analysis was to provide such findings from a large-scale non-interventional study.Methods A1chieve was a multinational,prospective,open-label,non-interventional,24-week study in patients with type 2 diabetes initiating insulin analogues in 28 countries across Asia,Africa,Europe,and Latin America.After physician had taken the decision to use this insulin,any patient with type 2 diabetes who was not treated with or who had started the study insulin within 4 weeks before inclusion was eligible.Patients were treated with study insulin alone or in combination with oral glucose-lowering drugs.Data on adverse drug reactions,hypoglycemia and glycemic control were collected at baseline,week 12 and 24.This is a report of a Chinese subgroup analysis from the A1chieve study.Results Totally,4 100 patients constituted this subgroup.No serious adverse drug reactions were reported.Rates of total,major,noctal hypoglycemic events (events/patient per year) were 1.47,0.10,0.31 at baseline and 1.35,0.00,0.22 at week 24,respectively.Glycemic control was improved as measured by hemoglobin A1c (mean 9.3％ to 7.0％,reduction -2.3％),fasting plasma glucose (mean 10.2 to 6.8 mmol/L,reduction-3.5 mmol/L) and postprandial plasma glucose (mean 14.4 to 8.8 mmol/L,reduction-5.6 mmol/L),all P ＜0.001.Change in mean body weight was +0.3 kg (P ＜0.001).Conclusion In this subgroup analysis of the A1chieve study,biphasic insulin aspart 30 improved glycemic control with low risk of hypoglycemia.