Background Metformin, in the absence of contraindications or
intolerance, is recommended as first-line treatment for patients with type 2
diabetes mellitus (T2DM). This observational, retrospective study assessed
the real-world adequacy of glycaemic control in Greek patients with T2DM
initiating metformin monotherapy at maximum tolerated dose.
Methods Included patients received metformin monotherapy for
≥24 months; relevant patient data were collected immediately prior
to metformin initiation (baseline) and at other prespecified time points.
The primary objective was to report, after 9 months of metformin treatment,
the percentage of patients with baseline glycated haemoglobin
(HbA1c) levels ≥6.5%
(≥48 mmol/mol) achieving
HbA1c<6.5%. Secondary objectives included the
assessment of time spent with poor glycaemic control and time to treatment
intensification. A sensitivity analysis assessed the percentage of patients
with baseline HbA1c≥7%
(≥53 mmol/mol) achieving
HbA1c<7%
(<53 mmol/mol).
Results Of the enrolled patients (N=316), 247 had baseline
HbA1c ≥6.5%; following 9 months on metformin,
90 (36.4%) patients achieved HbA1c<6.5%
(mean HbA1c change−1.3%
[−14 mmol/mol]). Median time of exposure to
HbA1c ≥6.5% was 23.4 months and time to
treatment intensification was 28.0 months. The sensitivity analysis revealed
that the proportion of patients achieving
HbA1c<7.0% was 50% (mean
HbA1cpy for up to 24 months. Addressing clinical inertia could
improve disease outcomes and, possibly, economic burden.