Table 2 Search strategy for Embase
Step | Concept | Search strategy |
|---|---|---|
#1 | Population = pregnant women | “Pregnancy”/de OR pregnant:TI,AB,kw OR pregnanc*:TI,AB,kw OR gestation*:TI,AB,kw OR fetus/exp. OR fetal:TI,AB,kw OR foetal:TI,AB,kw OR fetus:TI,AB,kw OR foetus:TI,AB,kw OR foetuses:TI,AB,kw OR fetuses:TI,AB,kw |
#2 | Index test = ultrasound | “ultrasound”/exp. OR “echography”/de OR “fetus echography”/de OR (“Doppler ultrasonography”/exp. Not “Doppler echocardiography”/exp) OR ultrasonograph*:TI,AB,kw OR ultrasound:TI,AB,kw OR “ultra sound”:TI,AB,kw OR scan:TI,AB,kw OR Doppler:TI,AB,kw OR sonograph*:TI,AB,kw OR echograph*:TI,AB,kw |
#3 | Reference test = small for gestational age measured by birth weight | “Birth weight”/exp. OR “fetus weight”/exp. OR “intrauterine growth retardation”/de OR “small for date infant”/exp. OR “small for gestational age”:TI,AB,kw OR “small for age infant”:TI,AB,kw OR SGA:TI,AB,kw OR “birth weight”:TI,AB,kw OR birth-weight:TI,AB,kw OR birthweight:TI,AB,kw OR “growth restriction”:TI,AB,kw OR “growth retardation”:TI,AB,kw OR IUGR:TI,AB,kw OR ((fetal OR foetal OR fetus OR foetus OR newborn OR infant OR neonatal) NEAR/2 (weight OR size OR growth)):TI,AB,kw |
#4 | Outcome = predictive value | “Sensitivity and Specificity”/exp. OR “Predictive Value”/exp. OR Sensitivit*:TI,AB,kw OR specificity:TI,AB,kw OR “predictive value*”:TI,AB,kw OR “predictive model*”:TI,AB,kw OR “false-positive rate”:TI,AB,kw OR “detection rate”:TI,AB,kw OR “ROC curve”:TI,AB,kw OR “receiver operating characteristic”:TI,AB,kw OR “AUC”:TI,AB,kw OR “area under the curve”:TI,AB,kw OR “screening”/de OR “screening test”/exp. OR “Prenatal screening”/exp. OR “Newborn screening”/exp. OR screening:TI,AB,kw |
#5 | Human filter | “Animal”/exp. NOT “Human”/exp |
#6 | Filter Embase only | [embase]/lim NOT [medline]/lim |
#7 | Combination of concepts | #1 AND #2 AND #3 AND #4 AND #6 NOT #5 |