Gryaznov, Dmitry

Nonregistration, discontinuation, and nonpublication of randomized trials: A repeated metaresearch analysis

Speich, B., Gryaznov, D., Busse, J. W., Gloy, V. L., Lohner, S., Klatte, K., Taji Heravi, A., Ghosh, N., Lee, H., Mansouri, A., et al. (2022) · PLOS Medicine

Meta-analysis and systematic reviewsAcademic Publishing and Open Access

Cited by 69

Reporting quality of clinical trial protocols: a repeated cross-sectional study about the Adherence to SPIrit Recommendations in Switzerland, CAnada and GErmany (ASPIRE-SCAGE)

Gryaznov, D., von Niederhäusern, B., Speich, B., Kasenda, B., Ojeda-Ruiz, E., Blümle, A., Schandelmaier, S., Mertz, D., Odutayo, A., Tomonaga, Y., et al. (2022) · BMJ Open

Meta-analysis and systematic reviewsStatistical Methods in Clinical Trials

Cited by 22

A longitudinal assessment of trial protocols approved by research ethics committees: The Adherance to SPIrit REcommendations in the UK (ASPIRE-UK) study

Speich, B., Odutayo, A., Peckham, N., Ooms, A., Stokes, J. R., Saccilotto, R., Gryaznov, D., von Niederhäusern, B., Copsey, B., Altman, D. G., et al. (2022) · Trials

Meta-analysis and systematic reviewsPharmaceutical industry and healthcare

Cited by 21

A meta-research study of randomized controlled trials found infrequent and delayed availability of protocols

Schönenberger, C. M., Griessbach, A., Taji Heravi, A., Gryaznov, D., Gloy, V. L., Lohner, S., Klatte, K., Ghosh, N., Lee, H., Mansouri, A., et al. (2022) · Journal of Clinical Epidemiology

Meta-analysis and systematic reviewsAcademic Publishing and Open Access

Cited by 17

Evaluation of Planned Subgroup Analysis in Protocols of Randomized Clinical Trials

Taji Heravi, A., Gryaznov, D., Schandelmaier, S., Kasenda, B., Briel, M., Adherence to SPIRIT Recommendations (ASPIRE) Study Group, von Niederhäusern, B., Speich, B., Ojeda-Ruiz, E., Blümle, A., et al. (2021) · JAMA Network Open

Statistical Methods in Clinical TrialsMeta-analysis and systematic reviews

Cited by 5