Evidence mapPaperPMID 41776754Full record

ArticleEndocrinology, diabetes & metabolism2026

Understanding Medication Adherence and Glycaemic Level in People With Type 2 Diabetes Across Countries: A Cross-Sectional and Longitudinal Analysis of Medication Beliefs, Illness Perceptions, Resistance to Illness and Mood.

Vivien Teo, John Weinman, Kai Zhen Yap, Shaun Eric Lopez, Anna Hodgkinson, Mark Chamley

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Article in Endocrinology, diabetes & metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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6 authors.

Vivien TeoInstitute of Pharmaceutical Sciences, King's College London, London, UK.ORCID https://orcid.org/0000-0003-3054-9822
John WeinmanInstitute of Pharmaceutical Sciences, King's College London, London, UK.ORCID https://orcid.org/0000-0002-6786-0166
Kai Zhen YapDepartment of Pharmacy and Pharmaceutical Sciences, National University of Singapore, Singapore, Singapore.ORCID https://orcid.org/0000-0002-8440-0313
Shaun Eric LopezDivision of Pharmacy, Tan Tock Seng Hospital, Singapore, Singapore.ORCID https://orcid.org/0000-0003-4953-0136
Anna HodgkinsonLambeth Diabetes Intermediate Care Team, Guy's and St Thomas' NHS Foundation Trust, London, UK.ORCID https://orcid.org/0000-0001-9375-4511
Mark ChamleyLambeth Diabetes Intermediate Care Team, Guy's and St Thomas' NHS Foundation Trust, London, UK.ORCID https://orcid.org/0000-0002-4596-3906

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsLow medication adherence is prevalent in diabetes, and many adherence factors found are non-modifiable by interventions. Adherence interventions have limited effectiveness due to a lack of tailoring and understanding of common modifiable factors. Hence, this study aimed to identify common and distinctive factors associated with medication adherence and glycaemic levels among people with type 2 diabetes in Singapore and the United Kingdom (UK) using cross-sectional and longitudinal analyses of standardised measures.

methodsMedication adherence, medication beliefs, illness perceptions, mood, and glycaemic level were assessed using validated questionnaires and glycated haemoglobin (HbA1c) among 550 participants. Regressions and multilevel models investigated factors associated with baseline and 3-6-month adherence and HbA1c.

resultsOverall, participants with greater resistance to illness (β = -0.084, p = 0.031), medication concern (β = -0.069, p = 0.026) and reduced understanding of diabetes (β = 0.105, p = 0.053) had lower baseline adherence. Participants with greater adherence (β = -0.088, p = 0.006), personal control (β = -0.154, p < 0.001) and reduced emotional impact (β = 0.076, p = 0.008) had lower baseline HbA1c. Perceived treatment control was associated with follow-up adherence (β = 0.140, p = 0.051), while personal control was associated with follow-up HbA1c (β = -0.092, p = 0.009). In Singapore, resistance to illness (β = -0.110, p = 0.011) and medication concern (β = -0.101, p = 0.006) were significant adherence factors. Participants with greater testing treatment tendency (β = 0.146, p = 0.028) and lower personal control (β = -0.132, p = 0.006) had higher HbA1c. In the UK, sensitivity to medication was related to adherence (β = -0.262, p = 0.019), while adherence (β = -1.020, p = 0.040) and personal control (β = -1.803, p = 0.001) were linked to HbA1c.

conclusionsCommon factors, such as resistance to illness and perceived personal control, may affect medication adherence or glycaemic level. Distinctive factors associated with medication adherence or glycaemic level include perceived sensitivity to medication and testing treatment. The common and distinctive factors identified could be used to support broadly applicable and locally relevant personalised intervention development.

Indexed as

AffectDiabetes Mellitus, Type 2Drug MonitoringHealth Knowledge, Attitudes, PracticeHypoglycemic AgentsMedication AdherenceAgedBlood GlucoseCross-Sectional StudiesFemaleGlycated HemoglobinHumansLongitudinal StudiesMaleMiddle AgedSingaporeBlood GlucoseGlycated Hemoglobinhemoglobin A1c protein, humanHypoglycemic Agentsglycated haemoglobinmedication adherencetype 2 diabetes mellitus

Identifiers

PMID41776754
PMCPMC12956836

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.