title: [Is usually more often than frequently, or how often is sometimes?].
authors.forename: A
authors.initials: A
authors.lastname: Bakker
mesh_terms: D012107:Research Design; D012660:Semantics; D013223:Statistics as Topic; D011795:Surveys and Questionnaires
vernacular_title: Is doorgaans vaker dan dikwijls; of hoe vaak is soms?