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Table 5 Retained candidate terms

From: Identifying observational studies of surgical interventions in MEDLINE and EMBASE

MEDLINE EMBASE
Precision Specificity Precision Specificity
Comparative studies/ Follow-up studies/ Comparative studies/ Follow-up studies/ Time factors/ Controlled study/ Treatment outcome/ Major clinical study/ Controlled study/ Treatment outcome/ Major clinical study/ Clinical trial/
(preoperat$ or pre operat$).mp (preoperat$ or pre operat$).mp (preoperat$ or pre operat$).mp  
chang$.tw chang$.tw chang$.tw chang$.tw
evaluat$.tw evaluat$.tw evaluat$.tw evaluat$.tw
reviewed.tw reviewed.tw reviewed.tw reviewed.tw
prospective$.tw prospective$.tw   
retrospective$.tw retrospective$.tw   
baseline.tw baseline.tw   baseline.tw
cohort.tw cohort.tw   
consecutive$.tw    
(compare$ or compara$).tw   (compare$ or compara$).tw (compare$ or compara$).tw
  case series.tw