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  • Title: Initiating insulin therapy with, or switching existing insulin therapy to, biphasic insulin aspart 30/70 (NovoMix 30) in routine care: safety and effectiveness in patients with type 2 diabetes in the IMPROVE observational study.
    Author: Valensi P, Benroubi M, Borzi V, Gumprecht J, Kawamori R, Shaban J, Shah S, Shestakova M, Wenying Y, IMPROVE Study Group Expert Panel.
    Journal: Int J Clin Pract; 2009 Mar; 63(3):522-31. PubMed ID: 19187170.
    Abstract:
    AIMS: The IMPROVE observational study evaluated the safety profile and effectiveness of biphasic insulin aspart 30/70 (BIAsp 30) in patients with type 2 diabetes in routine practice in 11 countries. METHODS: Patients who initiated insulin therapy with, or switched existing insulin therapy to, BIAsp 30 in routine care were eligible for this 26-week, non-interventional observational study. Data on adverse events, hypoglycaemia and glycaemic parameters were obtained from patients' diaries and medical notes. Questionnaire-based patient treatment satisfaction was also measured. We report global results and, uniquely for a diabetes observational study, country-specific data. RESULTS: A total of 52,419 patients were enrolled from three prestudy treatment groups: no pharmaceutical therapy (n = 8966, diabetes duration 2.0 years, baseline HbA1c 9.9%), oral antidiabetic drugs (OADs) only (n = 33,797, diabetes duration 7.4 years, baseline HbA1c 9.2%) and insulin +/- OADs (n = 9568, diabetes duration 10.4 years, baseline HbA1c 9.3%). At final visit, HbA1c, fasting and postprandial blood glucose were significantly reduced from baseline in all subgroups (no pharmaceutical therapy: -3.1%, -5.9 and -9.0 mmol/l, respectively; OADs-only: -2.1%, -4.1 and -6.1 mmol/l; insulin +/- OADs: -2.0%, -3.3 and -5.1 mmol/l). Major hypoglycaemia rates decreased in all subgroups; minor hypoglycaemia increased in the insulin-naïve groups. There was no mean weight gain across subgroups. Across all countries, glycaemic parameters and major hypoglycaemia were reduced; weight increases were seen in some countries. Treatment satisfaction increased in all subgroups and countries following BIAsp 30 therapy. CONCLUSIONS: Initiating insulin with, or switching insulin therapy to, BIAsp 30 in routine care resulted in improved glycaemic control, reduced major hypoglycaemia and greater treatment satisfaction.
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