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Table 2 Planned process measures relating to each element of Saving Babies Lives Care Bundle

From: Saving babies’ lives project impact and results evaluation (SPiRE): a mixed methodology study

Element Outcome Type Process Outcome
Element 1 Smoking and Pregnancy Primary Outcome Proportion of women smoking at delivery
Secondary Outcomes Proportion of women offered carbon monoxide (CO) test
Proportion of women accepting CO test
Proportion of women referred to smoking cessation
Proportion of women ceasing smoking between booking and delivery
Proportion of women referred to smoking cessation with a positive CO test
Element 2: Detection of SGA Primary Outcome Proportion of SGA singletons detected prior to delivery
Secondary Outcomes Proportion of all singletons with growth charts in notes
Proportion of SGA pregnancies with estimated fetal weight (EFW) plotted on growth chart
Proportion of SGA pregnancies with symphysis fundal height (SFH) plotted on growth chart
Proportion of SGA pregnancies with EFW correctly plotted on growth chart
Exploratory Outcomes Proportion of babies identified as SGA during pregnancy that were appropriate for gestation age (AGA) at birth (false positives)
Proportion of babies identified as AGA during pregnancy that were SGA at birth (false negatives)
Proportion of pregnancies with customised growth chart
Birthweight centile at last scan (by EFW measurement)
Number of third trimester growth scans
Element 3: Patient information provision and RFM management Co-primary outcomes Proportion of women receiving RFM leaflet
Proportion of women with RFM managed according to checklist
Secondary outcomes Number of women attending antenatal triage clinic
Proportion of triage women presenting with RFM on at least one occasion
Proportion of women with RFM who had scan
Exploratory outcomes Proportion of women with RFM who had FH monitoring
Gestation of baby at RFM episodes
Number of growth scans due to RFM
Time to scan from reporting RFM
Number of RFM episodes per pregnancy
Element 4: Effective fetal monitoring during labour Primary outcome Proportion of deliveries where both buddy and stickers used
Secondary outcomes Proportion of staff completing annual CTG training
Proportion of pregnancies where escalation protocol was used