"...a systematic approach to literature retrieval.. is both methodical and reasoned. As with other research procedures, literature searches should be documented and verifiable. There are no set ways of going about this, so documentary procedure is germane" (Haraldstad & Christophersen, 2007, s. 127 in Laake, Benestead & Olsen (red) Research methodology in the Medical and Biological Sciences)
"The so-called building-block strategy is commonly used when formulating a search strategy. Each part of the PICO that has been selected for use in the search strategy usually corresponds to a block of search terms and search phrases. In Assessment of methods in health care A handbook, Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU), Sweden, 2018, p. 26
The last search result will include words from all the concepts, elements from my search question that has been chosen for the search:
Search number |
Concept, Elements from my search question
|
Search words (a block of words representing the concept, element from my question) How and at what frequency should repositioning (I) be undertaken for the prevention of pressure ulcers (O) immobile bedridden elders (P) |
Population- or sample, or problem | aged OR elder* | |
1 | Intervention- or issue or phenomenon of interest, or exposition or risk, or instrument | repositioning* OR turn OR turning OR position* |
2 | Comparison- or Context | |
3 | outcomes - or evaluations | pressure NEARBY (ulcer* OR sore* OR injur*) |
4 | P AND I AND O | 1 AND 2 AND 3 |
5 | possible S study designs/research methods | |
6 | possible T time or Type of study |
Strategies used in the initial phases before undertaking a systematic search, and as a follow up search strategy