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Table 1 Academic and grey literature searches and search terms used to identify interventions to promote healthier ready-to-eat meals (to eat in, take away, or delivered) sold by specific food outlets in England

From: A description of interventions promoting healthier ready-to-eat meals (to eat in, to take away, or to be delivered) sold by specific food outlets in England: a systematic mapping and evidence synthesis

Academic searches
Bibliographic databases MEDLINE (Ovid), EMBASE (Ovid), CINAHL (Ebscohost), PsycINFO (Ebscohost), ASSIA (ProQuest) and the NHS Economic Evaluation Database (Wiley Cochrane). (searched from start 1993 to end 2013). For more details about search strategies, please see references [17, 18]
Research and trial Registersa The National Research Register (NRR) (archived from 2000 to 2007) and the International Standard Randomised Controlled Trial Number (ISRCTN) Register (search date 10 January 2014)
Grey literature searchesa
Grey literature databases OpenGrey, Social Care Online and Prevention Information & Evidence eLibrary (search date 16 December 2013)
Media database Nexis (search date 16 December 2013)
Specific websites Food Standards Agency (archived web site from 2001 to 2009), Department of Health, Public Health England, National Obesity Observatory, Chartered Institute of Environmental Health (CIEH), Food Vision, Change4Life, Sustain, British Heart Foundation, Obesity Learning Centre, UK Health Forum, NICE, Food For Life, Soil Association, Focus On Food Campaign, RH Environmental, Children’s Food Trust and Local Food Grants (searches conducted 13–16 January 2014).
Internet search engineb Google (searches conducted 17–23 December 2013)
  1. aSearch terms used for research and trial registers, and grey literature searches, were: Fast food, take-away, out-of-home food, café, restaurant, food environment, health, healthy eating, programme, project, intervention
  2. bThe first 100 hits of each search were accessed, or earlier if saturation was achieved (i.e. no new interventions were found in the last 20 hits)