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Table 2

From: Post-trial follow-up methodology in large randomized controlled trials: a systematic review protocol

Step

Search domain

Search terms

1

Randomized controlled trials

randomized controlled trial.pt. or random?ed control* trial*.mp. or random allocation/

2

Post- trial

(Post-trial or post trial or attrition or drop out? or dropout? or follow-up or followup? or extension* or trial closure? or long-term or longterm or extended observation* or extended stud*).mp.

3

Outcomes

(cost effective* or cost benefit* or costs or survivors or hospital admission? or hospitali?ation? or primary outcome* or secondary outcome* or primary endpoint? or secondary endpoint? or composite endpoint? or primary end point? or secondary end point? or composite end point? or outcome measure* or outcome assessment or outcomes research).mp. or treatment outcome/

4

Types of methodological follow-up

electronic data processings/or automatic data processing/or “surveys and questionnaires”/or telephone/or interview/or data collection methods/or data collection/or data linkage/or data system?.mp. or data reporting/or epidemiologic method?.mp. or incidence.mp. or mortality.mp. or health episode statistics.mp. or electronic health record?.mp. or electronic patient record?.mp. or computeri?ed record-linkage system?.mp. or national register*.mp. or national database*.mp. or episode of care/or routine data.mp. or routinely collected data.mp.

5

 

1 and 2 and 3 or 4

6

5

exp animals/not humans.sh.

7

6

limit to (abstracts and English language and yr=“2006 -Current”)