Siersma, Volkert

Sample Size in Qualitative Interview Studies: Guided by Information Power

Malterud, K., Siersma, V. D., & Guassora, A. D. (2016) · Qualitative Health Research

Qualitative Research Methods and ApplicationsFocus Groups and Qualitative Methods

Cited by 12,703

Efficacy of psychosocial intervention in patients with mild Alzheimer’s disease: the multicentre, rater blinded, randomised Danish Alzheimer Intervention Study (DAISY)

Waldorff, F. B., Buss, D. V., Eckermann, A., Rasmussen, M. L. H., Keiding, N., Rishoj, S., Siersma, V., Sorensen, J., Sorensen, L. V., Vogel, A., et al. (2012) · BMJ

Dementia and Cognitive Impairment ResearchNursing care and research

Cited by 106

Changes in Prescription Routines for Treating Hypothyroidism Between 2001 and 2015: An Observational Study of 929,684 Primary Care Patients in Copenhagen

Medici, B. B., Nygaard, B., la Cour, J. L., Grand, M. K., Siersma, V., Nicolaisdottir, D. R., Lind, B., Olivarius, N. D. F., & Andersen, C. L. (2019) · Thyroid®

Thyroid Disorders and TreatmentsThyroid and Parathyroid Surgery

Cited by 63

Patients with Alzheimer's disease who carry the APOE ε4 allele benefit more from physical exercise

Jensen, C. S., Simonsen, A. H., Siersma, V., Beyer, N., Frederiksen, K. S., Gottrup, H., Hoffman, K., Høgh, P., Frikke‐Schmidt, R., Sobol, N. A., et al. (2019) · Alzheimer's & Dementia: Translational Research & Clinical Interventions

Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Cited by 55

Quantitative Electroencephalography Analyzed by Statistical Pattern Recognition as a Diagnostic and Prognostic Tool in Mild Cognitive Impairment: Results from a Nordic Multicenter Cohort Study

Schjønning Nielsen, M., Simonsen, A. H., Siersma, V., Engedal, K., Jelic, V., Andersen, B. B., Naik, M., Hasselbalch, S. G., & Høgh, P. (2018) · Dementia and Geriatric Cognitive Disorders Extra

Dementia and Cognitive Impairment ResearchEEG and Brain-Computer Interfaces

Cited by 15