title: The stepped wedge cluster randomized trial always requires fewer clusters but not always fewer measurements, that is, participants than a parallel cluster randomized trial in a cross-sectional design. In reply.
authors.affiliation: Department for Health Evidence 133, Radboud University Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands. Electronic address: E.deHoop@ebh.umcn.nl.
authors.forename: Esther
authors.initials: E
authors.lastname: de Hoop
authors.forename: Willem
authors.initials: W
authors.lastname: Woertman
authors.forename: Steven
authors.initials: S
authors.lastname: Teerenstra
mesh_terms: D003863:Depression / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D018401:Sample Size