Treatment Adherence Among Patients With Inflammatory Bowel Disease Receiving Anti-TNF Therapy
Effect of Health Belief Model-Based Nurse-Led Patient Education on Treatment Adherence Among Patients With Inflammatory Bowel Disease Receiving Anti-Tumor Necrosis Factor Therapy
Inflammatory bowel disease (IBD) is a chronic condition characterized by periods of remission and relapse, requiring long-term treatment adherence to maintain disease control and prevent complications. Anti-tumor necrosis factor (anti-TNF) agents are widely used in the management of moderate to severe IBD; however, suboptimal adherence remains a significant clinical problem due to concerns related to adverse effects, treatment burden, and insufficient patient knowledge.
This randomized controlled trial evaluated the effectiveness of a nurse-led, Health Belief Model (HBM)-based structured patient education program on treatment adherence among patients with inflammatory bowel disease (IBD) receiving anti-TNF-α therapy. The study was conducted as a two-center trial between February and July 2024 in the gastroenterology inpatient units and outpatient clinics in Izmir, Turkey.
A total of 408 patients were screened, and 140 eligible patients were enrolled and allocated 1:1 to intervention (n=70) and control (n=70) groups.
Participants were randomized using stratified randomization to balance potential confounders, with strata defined by sex, age group (18-35, 36-54, ≥55), IBD type (ulcerative colitis/Crohn's disease), IBD diagnosis duration (<12, 13-24, 25-36 months), and anti-TNF treatment duration (<6, 6-12, 13-36 months). Assignments were generated via SPSS with a fixed block size within strata.
Eligible participants were adults (≥18 years), Turkish-literate, diagnosed with IBD for ≥6 months, using anti-TNF-α therapy for ≥3 months, able to communicate and cognitively competent, and willing to participate. Key exclusions included cognitive disorders (e.g., dementia/Alzheimer's), malignant/pre-malignant disease history, and use of more than four medications.
The intervention group received the HBM-based structured education, while the control group received standard education. Outcomes were assessed using a pre-test/post-test design to determine the program's impact on adherence-related measures.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
This study was designed as a randomized controlled trial to evaluate the effect of a nurse-led, structured patient education program based on the Health Belief Model on treatment adherence among patients receiving anti-TNF therapy. The study was conducted in two tertiary care hospitals in Türkiye between February and July 2024.
Eligible participants were allocated in a 1:1 ratio to either an intervention group or a control group using stratified randomization. Stratification variables included demographic and disease-related characteristics to ensure balance between study arms. Randomization sequences were generated using a computer-based randomization procedure.
Participants in the intervention group received a structured patient education program delivered by trained nurses and grounded in the constructs of the Health Belief Model, focusing on adherence-related beliefs, perceived benefits and barriers, and self-management of anti-TNF therapy. Participants in the control group received standard education routinely provided in outpatient clinical practice.
The study followed a pre-test/post-test design with follow-up assessment to evaluate changes over time. Outcome assessments were conducted at baseline, immediately after the intervention, and at follow-up. The effectiveness of the intervention was evaluated by comparing adherence-related outcomes between the intervention and control groups over time.
This trial aimed to contribute evidence on the role of theory-based, nurse-led patient education in supporting treatment adherence among patients receiving biologic therapies.
研究の種類
研究の種類
入学 (実際)
入学
段階
段階
- 適用できない
連絡先と場所
研究場所
-
-
-
Izmir、トルコ(Türkiye)
- Izmir Ekonomi University Medical Point Hospital
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Izmir、トルコ(Türkiye)
- Izmir Ataturk Training and Research Hospital
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-
参加基準
適格基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- Aged 18 years or older
- Diagnosed with inflammatory bowel disease (Crohn's disease or ulcerative colitis)
- Diagnosed with inflammatory bowel disease for at least 6 months
- Receiving anti-TNF-α therapy for at least 3 months
- Able to read and write in Turkish
- Able to communicate effectively
- Cognitively competent
- Provided written informed consent and agreed to participate in the study
Exclusion Criteria:
- Presence of cognitive disorders that may impair understanding or decision-making (e.g., dementia, Alzheimer's disease)
- History of malignant or premalignant disease
- Use of more than four concurrent medications (e.g., medications for hypertension, diabetes, cancer, or hematologic diseases)
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:支持療法
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
実験的:Health Belief Model-Based Structured Patient Education
Participants received a nurse-led, structured patient education program grounded in the Health Belief Model to support adherence to anti-TNF therapy and treatment self-management in inflammatory bowel disease.
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A nurse-led structured patient education program based on the Health Belief Model, targeting adherence-related beliefs and behaviors for anti-TNF therapy, including education on medication use and addressing concerns and barriers to adherence.
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アクティブコンパレータ:Standard Education
Participants received standard outpatient clinic education routinely provided as part of usual care for patients receiving anti-TNF therapy.
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Standard patient education routinely provided in outpatient clinical practice for patients receiving anti-TNF therapy, without a structured theoretical framework.
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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Anti-TNF Alpha Treatment Adherence Scale
時間枠:Baseline (pre-intervention), immediately post-intervention, and 1-month follow-up
|
Treatment adherence was measured using the Anti-TNF Alpha Treatment Adherence Scale, a validated self-report instrument assessing patients' adherence behaviors related to anti-TNF therapy.
The scale evaluates multiple domains including medication-taking behavior, concerns about treatment, perceived barriers, and factors influencing continuation or discontinuation of therapy.
Higher scores indicate better adherence to anti-TNF treatment.
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Baseline (pre-intervention), immediately post-intervention, and 1-month follow-up
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Partners in Healthcare Scale
時間枠:Baseline (pre-intervention), immediately post-intervention, and 1-month follow-up
|
Nurse-patient collaboration was assessed using the Partners in Healthcare Scale-Turkish (PIH-TR), which measures the degree of cooperation, shared decision-making, and partnership between patients and healthcare professionals in disease management.
Higher scores reflect stronger collaboration.
|
Baseline (pre-intervention), immediately post-intervention, and 1-month follow-up
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Patient Satisfaction With Education
時間枠:Immediately post-intervention
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Patient satisfaction with the education received was measured using the The Psychometric Assessment on Patient Educationn Scale, a validated instrument evaluating patients' perceptions of the clarity, usefulness, and adequacy of the educational intervention provided during the study.
|
Immediately post-intervention
|
協力者と研究者
出版物と役立つリンク
一般刊行物
- Sullivan GM, Feinn R. Using Effect Size-or Why the P Value Is Not Enough. J Grad Med Educ. 2012 Sep;4(3):279-82. doi: 10.4300/JGME-D-12-00156.1. No abstract available.
- Cummings KM, Jette AM, Rosenstock IM. Construct validation of the health belief model. Health Educ Monogr. 1978 Winter;6(4):394-405. doi: 10.1177/109019817800600406.
- Ciftci B, Avsar G, Sarialioglu A. A psychometric assessment on patient education: Developing a satisfaction scale. Perspect Psychiatr Care. 2022 Oct;58(4):2237-2245. doi: 10.1111/ppc.13052. Epub 2022 Feb 16.
- Basak N, Ozgursoy Uran BN, Saritas Yuksel E. Treatment Adherence of Anti-TNF Drugs in the Patients with Inflammatory Bowel Disease: A Scale Development Study. Turk J Gastroenterol. 2022 Apr;33(4):336-345. doi: 10.5152/tjg.2022.211170.
- King K, Czuber-Dochan W, Chalder T, Norton C. Medication Non-Adherence in Inflammatory Bowel Disease: A Systematic Review Identifying Risk Factors and Opportunities for Intervention. Pharmacy (Basel). 2025 Feb 7;13(1):21. doi: 10.3390/pharmacy13010021.
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (実際)
一次修了
研究の完了 (実際)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
キーワード
追加の関連 MeSH 用語
その他の研究ID番号
その他の研究ID番号
- 0588
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
米国で製造され、米国から輸出された製品。
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