August 01, 2004 article Patterns of intra-cluster correlation from primary care research to inform study design and analysis Journal of Clinical Epidemiology DOI: 10.1016/j.jclinepi.2003.12.013 OpenAlex Authors 0 Author list not loaded yet. Cited by 7 stored of 620 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access Impact of a diagnostic strategy for appendicitis in children with acute abdominal pain in primary care: study protocol for a hybrid type 1 cluster randomised controlled trial 2026 Diagnostic and Prognostic Research article Medicine Appendicitis Diagnosis and Management Open access 0 citations Kostenfreie Pharmakotherapie zur Tabakentwöhnung in der Hausarztpraxis: eine cluster-randomisierte Pilotstudie 2026 SUCHT - Zeitschrift für Wissenschaft und Praxis / Journal of Addiction Research and Practice article Medicine Smoking Behavior and Cessation Open access 0 citations Reimbursement of pharmacotherapy for smoking cessation in the context of brief general practitioner advice: A cluster-randomised pilot study in the HAFO.NRW primary care research network in Germany 2025 medRxiv preprint Medicine Smoking Behavior and Cessation Open access 0 citations Hotspotters Project: a study protocol for a stepped wedge cluster RCT on the cost-effectiveness of 12-month proactive, integrated and personalised care for patients with problems on multiple life domains and high acute care use 2025 BMJ Open article Medicine Chronic Disease Management Strategies Open access 2 citations Lifestyle behaviour change of patients following cardiac rehabilitation: the BENEFIT intervention study with one-year follow-up 2025 European Journal of Preventive Cardiology article Medicine Cardiac Health and Mental Health Open access 3 citations Effectiveness of the ‘SELF-program’ on nurses' activity encouragement behavior and nursing home resident's ADL self-reliance; a cluster-randomized trial 2024 International Journal of Nursing Studies article Health Professions Geriatric Care and Nursing Homes Open access 6 citations Towards optimal treatment selection for borderline personality disorder patients (BOOTS): a study protocol for a multicenter randomized clinical trial comparing schema therapy and dialectical behavior therapy 2022 BMC Psychiatry article Psychology Personality Disorders and Psychopathology Open access 30 citations 7 results References 0