Secular trends and evaluation of complex interventions: the rising tide phenomenon
نویسندگان
چکیده
منابع مشابه
Secular trends and evaluation of complex interventions: the rising tide phenomenon
Evaluations of service delivery interventions with contemporaneous controls often yield null results, even when the intervention appeared promising in advance. There can be many reasons for null results. In this paper we introduce the concept of a 'rising tide' phenomenon being a possible explanation of null results. We note that evaluations of service delivery interventions often occur when aw...
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ژورنال
عنوان ژورنال: BMJ Quality & Safety
سال: 2015
ISSN: 2044-5415,2044-5423
DOI: 10.1136/bmjqs-2015-004372