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Revista del Cuerpo Médico Hospital Nacional Almanzor Aguinaga Asenjo

Print version ISSN 2225-5109On-line version ISSN 2227-4731


DE LA CRUZ-SALDANA, Tania et al. Effects of an Intervention with educational phone calls to improve adherence and metabolic control in people with type 2 diabetes mellitus: a randomized clinical trial. Rev. Cuerpo Med. HNAAA [online]. 2021, vol.14, n.4, pp.438-446.  Epub Dec 29, 2021. ISSN 2225-5109.


Information and communication technologies can help us improve metabolic control and adherence in people with type 2 diabetes mellitus (DM2).


To evaluate the effects of an intervention with telephone calls in outpatients with poorly controlled DM2 in a hospital in Peru.


Randomized clinical trial. We included adults with DM2 with poor glycemic control, who were randomized to the control group (usual care) or to the intervention group (usual care plus a telephone intervention every two weeks for three months). The primary outcome was a ≥ 1% reduction in glycosylated hemoglobin at three months.


94 participants were recruited (47 in each group). Mean age was 59.8 years (SD: 10.2), 69.2 % were women. At three months, only 14/47 participants in the control group and 13/47 participants in the intervention group had HbA1c measurement. Among these, the percentage of those who achieved a ≥ 1% decrease in HbA1c was 35,7% (5/14) in the control group and 53,8% (7/13) in the intervention group (RR: 0,72, 95% CI: 0,35-1,47). No differences were found in adherence to treatment between groups.


No statistically significant differences were found for the outcomes of interest. This is possibly due to the low percentage of participants who were able to complete follow-up. Innovative solutions are needed to improve the control of people with DM2.

Keywords : Type 2 diabetes; Telecommunications; Glycated hemoglobin A; Adherence.

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