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. 2023 Oct 24;2023(10):CD014967. doi: 10.1002/14651858.CD014967.pub2

Summary of findings 8. Summary of findings table ‐ Lignocaine versus benzodiazepines as second‐line ASM for EEG‐confirmed neonatal seizures.

Lignocaine versus benzodiazepines as second‐line ASM for EEG‐confirmed neonatal seizures
Patient or population: neonates with EEG‐confirmed seizures
Setting: Neonatal intensive care unit
Intervention: lignocaine as second‐line ASM
Comparison: benzodiazepines as second‐line ASM
Outcomes Anticipated absolute effects* (95% CI) Relative effect
(95% CI) № of participants
(studies) Certainty of the evidence
(GRADE) Comments
Risk with benzodiazepines as second‐line ASM Risk with lignocaine as second‐line ASM
Proportion of infants who achieve seizure control after first loading dose of ASM ‐ not reported The included trial did not report this outcome.
Proportion of infants who achieve seizure control after maximal loading dose of ASM 0 per 1000 0 per 1000
(0 to 0) RR 8.17
(0.52 to 128.42) 11
(1 RCT) ⊕⊝⊝⊝
Very lowa,b  
Mortality or neurodevelopmental disability at 12 months 1000 per 1000 1000 per 1000
(710 to 1000) RR 1.00
(0.71 to 1.41) 10
(1 RCT) ⊕⊝⊝⊝
Very lowa,b,c  
Mortality before hospital discharge 333 per 1000 400 per 1000
(83 to 1000) RR 1.20
(0.25 to 5.71) 11
(1 RCT) ⊕⊝⊝⊝
Very lowa,b,c  
Neurodevelopmental disability at 12 months 600 per 1000 600 per 1000
(216 to 1000) RR 1.00
(0.36 to 2.75) 10
(1 RCT) ⊕⊝⊝⊝
Very lowa,b,c  
*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: confidence interval; RR: risk ratio
GRADE Working Group grades of evidenceHigh certainty: we are very confident that the true effect lies close to that of the estimate of the effect.
Moderate certainty: we are moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different.
Low certainty: our confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect.
Very low certainty: we have very little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of effect.
See interactive version of this table: https://gdt.gradepro.org/presentations/#/isof/isof_question_revman_web_438957465149804345.

a Downgraded by two levels for very serious risk of bias due to high risk of bias in the only included trial
b Downgraded by two levels for very serious imprecision due to very low sample size and event rate not meeting the 'Optimal Information Size' criteria
c Downgraded by one level for serious indirectness of the intervention as the study population included neonates who required second‐ and third‐line ASMs as well