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Factors Associated with Diabetes-Related Clinical Inertia in a Managed Care Population and Its Effect on Hemoglobin A1c Goal Attainment: A Claims-Based Analysis.

Abstract：

BACKGROUND:Despite evidence showing the benefits of treatment intensification following an elevated hemoglobin A1c (A1c), clinical inertia, or failure to establish and/or escalate treatment to achieve treatment goals, is a concern among patients diagnosed with type 2 diabetes (T2DM). Clinical inertia may contribute to increased health care utilization and costs due to poor clinical outcomes in MCOs. OBJECTIVES:To (a) identify factors associated with clinical inertia in T2DM and (b) determine differences in A1c goal attainment between patients who experience clinical inertia versus treatment intensification in a commercially insured population. METHODS:Medical and pharmacy claims data were used to identify commercially insured patients in a regional MCO with a recorded A1c ≥ 8.0% between January 1, 2013, and December 31, 2015. In the 4 months following the first elevated A1c value (index date), patients were classified into 2 groups: treatment intensification or clinical inertia. Treatment intensification was defined as the addition of ≥ 1 new noninsulin antihyperglycemic medication, the addition of insulin, or a dose increase of any current noninsulin antihyperglycemic medication. Patients were required to have ≥ 1 follow-up A1c value 6-12 months after the index date and continuous enrollment in the health plan for 12 months before and after the index date. Patients were excluded if they had a diagnosis for gestational diabetes or type 1 diabetes or if they were on insulin in the pre-index period. The primary outcome of attaining A1c < 7.0% was compared between groups after propensity score matching (PSM). Factors associated with clinical inertia were identified using logistic regression. RESULTS:3,078 patients, with a mean (SD) age of 54.4 (10.6) years and a mean (SD) baseline A1c of 9.6% (1.7), were included in the study. Of these, 1,093 patients (36%) experienced clinical inertia. After PSM, 1,760 patients remained; 880 in each group. In the clinical inertia group, 23% of patients achieved an A1c < 7.0% in the post-index period, compared with 35% in the treatment intensification group (P < 0.001). A greater likelihood of experiencing clinical inertia was associated with baseline treatment with 2 (OR = 1.51, 95% CI = 1.22-2.86; P < 0.001) or ≥ 3 (OR = 1.78, 95% CI = 1.30-2.42; P < 0.001) antihyperglycemic medications (vs. none), baseline age ≥ 65 years (OR = 2.11, 95% CI = 1.63-2.74; P < 0.001), and diagnosis of coronary heart disease (OR = 1.44, 95% CI = 1.10-1.88; P = 0.007). A baseline A1c ≥ 9.0% (vs. 8.0%-8.9%) was associated with a lower likelihood of experiencing clinical inertia (OR = 0.56, 95% CI = 0.48-0.66; P < 0.001). CONCLUSIONS:More than a third of patients in a commercially insured population with T2DM and a baseline A1c ≥ 8% experienced clinical inertia. Clinical inertia resulted in worse A1c outcomes over the 12-month follow-up period. Results of this study suggest that treatment intensification should be monitored, with efforts made to educate health care providers on strategies aimed at improving glycemic control for high-risk patients. DISCLOSURES:This study was funded by a grant from Janssen Scientific Affairs, which was involved in study design, interpretation of results, and manuscript review. Wander reports consulting fees from Sanofi Aventis outside the submitted work. McAdam-Marx reports grants from Sanofi Aventis and AstraZeneca outside the submitted work. Pesa and Bailey were employees of Janssen Scientific Affairs during the conduct of the study. Bailey also reports stock ownership in Johnson and Johnson. This study was presented as a poster at the Academy of Managed Care Pharmacy Nexus 2017; October 16-19, 2017; Grapevine, TX.

journal_name

J Manag Care Spec Pharm

journal_title

Journal of managed care & specialty pharmacy

authors

Ruiz-Negrón N,Wander C,McAdam-Marx C,Pesa J,Bailey RA,Bellows BK

doi

10.18553/jmcp.2019.25.3.304

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

304-313

issue

eissn

2376-0540

issn

2376-1032

journal_volume

pub_type

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Factors Associated with Diabetes-Related Clinical Inertia in a Managed Care Population and Its Effect on Hemoglobin A1c Goal Attainment: A Claims-Based Analysis.