Crutzen, Rik

A simple formula for the calculation of sample size in pilot studies

Viechtbauer, W., Smits, L., Kotz, D., Budé, L., Spigt, M., Serroyen, J., & Crutzen, R. (2015) · Journal of Clinical Epidemiology

Statistical Methods in EpidemiologyStatistical Methods in Clinical Trials

Cited by 612

Which Intervention Characteristics are Related to More Exposure to Internet-Delivered Healthy Lifestyle Promotion Interventions? A Systematic Review

Brouwer, W., Kroeze, W., Crutzen, R., de Nooijer, J., de Vries, N. K., Brug, J., & Oenema, A. (2011) · Journal of Medical Internet Research

Digital Mental Health InterventionsMobile Health and mHealth Applications

Cited by 455

Virtual and augmented reality applications in medicine: analysis of the scientific literature

Yeung, A. W. K., Tosevska, A., Klager, E., Eibensteiner, F., Laxar, D., Stoyanov, J., Glisic, M., Zeiner, S., Kulnik, S. T., Crutzen, R., et al. (2021) · Journal of Medical Internet Research

Augmented Reality ApplicationsVirtual Reality Applications and Impacts

Cited by 428

Measuring Engagement in eHealth and mHealth Behavior Change Interventions: Viewpoint of Methodologies

Short, C. E., DeSmet, A., Woods, C., Williams, S. L., Maher, C., Middelweerd, A., Müller, A. M., Wark, P. A., Vandelanotte, C., Poppe, L., et al. (2018) · Journal of Medical Internet Research

Mobile Health and mHealth ApplicationsDigital Mental Health Interventions

Cited by 400

Online Prevention Aimed at Lifestyle Behaviors: A Systematic Review of Reviews

Kohl, L. F., Crutzen, R., & de Vries, N. K. (2013) · Journal of Medical Internet Research

Digital Mental Health InterventionsMobile Health and mHealth Applications

Cited by 388

An Artificially Intelligent Chat Agent That Answers Adolescents' Questions Related to Sex, Drugs, and Alcohol: An Exploratory Study

Crutzen, R., Peters, G.-J. Y., Portugal, S. D., Fisser, E. M., & Grolleman, J. J. (2011) · Journal of Adolescent Health

Adolescent Sexual and Reproductive HealthArtificial Intelligence in Healthcare and Education

Cited by 205

Strategies to Facilitate Exposure to Internet-Delivered Health Behavior Change Interventions Aimed at Adolescents or Young Adults: A Systematic Review

Crutzen, R., de Nooijer, J., Brouwer, W., Oenema, A., Brug, J., & de Vries, N. K. (2011) · Health Education & Behavior

Digital Mental Health InterventionsMobile Health and mHealth Applications

Cited by 158

Characteristics of visitors and revisitors to an Internet-delivered computer-tailored lifestyle intervention implemented for use by the general public

Brouwer, W., Oenema, A., Raat, H., Crutzen, R., de Nooijer, J., de Vries, N. K., & Brug, J. (2010) · Health Education Research

Mobile Health and mHealth ApplicationsBehavioral Health and Interventions

Cited by 147

Differential attrition in health behaviour change trials: a systematic review and meta-analysis

Crutzen, R., Viechtbauer, W., Spigt, M., & Kotz, D. (2015) · Psychology & Health

Meta-analysis and systematic reviewsBehavioral Health and Interventions

Cited by 132

An Exploration of Factors Related to Dissemination of and Exposure to Internet-Delivered Behavior Change Interventions Aimed at Adults: A Delphi Study Approach

Brouwer, W., Oenema, A., Crutzen, R., de Nooijer, J., de Vries, N. K., & Brug, J. (2008) · Journal of Medical Internet Research

Digital Mental Health InterventionsMobile Health and mHealth Applications

Cited by 115

Using Google Analytics as a process evaluation method for Internet-delivered interventions: an example on sexual health

Crutzen, R., Roosjen, J. L., & Poelman, J. (2013) · Health Promotion International

Social Media in Health EducationHealth Literacy and Information Accessibility

Cited by 113

The Role of User Control in Adherence to and Knowledge Gained from a Website: Randomized Comparison Between a Tunneled Version and a Freedom-of-Choice Version

Crutzen, R., Cyr, D., & de Vries, N. K. (2012) · Journal of Medical Internet Research

Health Literacy and Information AccessibilityDigital Mental Health Interventions

Cited by 91

What makes people decide to visit and use an internet‐delivered behavior‐change intervention?: A qualitative study among adults

Brouwer, W., Oenema, A., Crutzen, R., de Nooijer, J., de Vries, N. K., & Brug, J. (2009) · Health Education

Digital Mental Health InterventionsMobile Health and mHealth Applications

Cited by 67

Who Follows eHealth Interventions as Recommended? A Study of Participants' Personal Characteristics From the Experimental Arm of a Randomized Controlled Trial

Reinwand, D. A., Schulz, D. N., Crutzen, R., Kremers, S. P., & de Vries, H. (2015) · Journal of Medical Internet Research

Mobile Health and mHealth ApplicationsDigital Mental Health Interventions

Cited by 62

Impact of educational level on study attrition and evaluation of web-based computer-tailored interventions: results from seven randomized controlled trials

Reinwand, D. A., Crutzen, R., Elfeddali, I., Schneider, F., Schulz, D. N., Stanczyk, N. E., Tange, H., Voncken-Brewster, V., Walthouwer, M. J. L., Hoving, C., et al. (2015) · Journal of Medical Internet Research

Digital Mental Health InterventionsBehavioral Health and Interventions

Cited by 54

Adding effect sizes to a systematic review on interventions for promoting physical activity among European teenagers

Crutzen, R. (2010) · International Journal of Behavioral Nutrition and Physical Activity

Physical Activity and HealthObesity, Physical Activity, Diet

Cited by 49

Research on digital technology use in cardiology: bibliometric analysis

Yeung, A. W. K., Kulnik, S. T., Parvanov, E. D., Fassl, A., Eibensteiner, F., Völkl-Kernstock, S., Kletecka-Pulker, M., Crutzen, R., Gutenberg, J., Höppchen, I., et al. (2022) · Journal of Medical Internet Research

scientometrics and bibliometrics researchDiverse Approaches in Healthcare and Education Studies

Cited by 44

Strength exercises during physical education classes in secondary schools improve body composition: a cluster randomized controlled trial

Ten Hoor, G. A., Rutten, G. M., Van Breukelen, G. J. P., Kok, G., Ruiter, R. A. C., Meijer, K., Kremers, S. P. J., Feron, F. J. M., Crutzen, R., Schols, A. M. J. W., et al. (2018) · International Journal of Behavioral Nutrition and Physical Activity

Physical Activity and HealthObesity, Physical Activity, Diet

Cited by 33

No differential attrition was found in randomized controlled trials published in general medical journals: a meta-analysis

Crutzen, R., Viechtbauer, W., Kotz, D., & Spigt, M. (2013) · Journal of Clinical Epidemiology

Meta-analysis and systematic reviewsStatistical Methods in Clinical Trials

Cited by 32

A Web-Based Intervention for Health Professionals and Patients to Decrease Cardiovascular Risk Attributable to Physical Inactivity: Development Process

Sassen, B., Kok, G., Mesters, I., Crutzen, R., Cremers, A., & Vanhees, L. (2012) · JMIR Research Protocols

Mobile Health and mHealth ApplicationsBehavioral Health and Interventions

Cited by 26

Patient-Generated Health Data (PGHD) Interoperability: An Integrative Perspective

Hussein, R., Crutzen, R., Gutenberg, J., Kulnik, S. T., Sareban, M., & Niebauer, J. (2021) · Studies in Health Technology and Informatics

Electronic Health Records SystemsMobile Health and mHealth Applications

Cited by 24

Dealing with complexity: How to use a hybrid approach to incorporate complexity in health behavior interventions

Mkhitaryan, S., Giabbanelli, P. J., de Vries, N. K., & Crutzen, R. (2020) · Intelligence-Based Medicine

Cognitive Science and MappingBehavioral Health and Interventions

Cited by 22

Barriers to and facilitators of partner notification for chlamydia trachomatis among health care professionals

Theunissen, K. A., Schipper, P., Hoebe, C. J., Crutzen, R., Kok, G., & Dukers-Muijrers, N. H. (2014) · BMC Health Services Research

Reproductive tract infections researchHealth Policy Implementation Science

Cited by 18

Social presence and use of Internet-delivered interventions: a multi-method approach

Crutzen, R., Cyr, D., Larios, H., Ruiter, R. A. C., & de Vries, N. K. (2013) · PLoS ONE

Virtual Reality Applications and ImpactsMedia Influence and Health

Cited by 12