Topiramate (Epilepsy) updated on 04-22-2025

Microcephaly / Small head circumference for gestational age

R analysis
id Study   Lib. in paper Exposition period    Study type 
 Control type 
 
Tags OR 95%CI x1/n1 x0/n0 no cases no exposed ROB Ref.
S16085
R66751		 Christensen (Topiramate) (Epilepsy) (Controls exposed to LTG), 2024 Microcephaly (z-score for head circumference ≤3rd percentile for gestational week, sex, and country (including newborns with congenital malformations)) during pregnancy (anytime or not specified) population based cohort retrospective exposed to other treatment, sick excluded Adjustment: No 1.34 [0.72;2.51] C
excluded (control group) 		11/290   151/5,299 162 290
ref
S16041
R66583		 Christensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 Microcephaly (z-score for head circumference ≤3rd percentile for gestational week, sex, and country (including newborns with congenital malformations)) during pregnancy (anytime or not specified) population based cohort retrospective unexposed, sick Adjustment: Yes 1.30 [0.70;2.39] 11/290   699/22,227 710 290
ref
Total 1 studies 1.30 [0.70;2.40] 710 290
x1: number of endpoints among exposed, n1: number of exposed; x0: number of endpoints among non exposed, n0: number of non exposed; C: calculated odds ratio from numbers of events and effectives

Forest plot

StudyTE95% CIn casesn exposedweightROBABCDEF Christensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024Christensen, 2024 1 1.30[0.70; 2.39]7102900%ROB confusion: criticalROB selection: lowROB classification: criticalROB missing: lowROB mesure: unclearROB reporting: moderate0.55.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Topiramate) (Epilepsy) (Controls unexposed, general population;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 1.30[0.70; 2.40]710290 -NAChristensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 1 case control studiescase control studies 0 Type of controls unexposed, sickunexposed, sick 1.30[0.70; 2.40]710290 -NAChristensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 1 Tags Adjustment   - Yes  - Yes 1.30[0.70; 2.40]710290 -NAChristensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 1 All studiesAll studies 1.30[0.70; 2.40]710290 -NAChristensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 10.55.01.0

Publication bias and p-hacking diagnosis

funnel plot

Funnel plot not drawn. Less than 3 points.

Asymetry test p-value = NaN (by Egger's regression)

not enought points

p values plot

Funnel plot not drawn. Less than 3 points.

Sub-groups analysis using all included studies

excluded 16085

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed, sick controlsunexposed, sick controls 1.30[0.70; 2.40]710290 -NAChristensen (Topiramate) (Epilepsy) (Controls unexposed, general population), 2024 1 exposed to other treatment, sick controlsexposed to other treatment, sick controls 1.34[0.72; 2.51]162290 -NAChristensen (Topiramate) (Epilepsy) (Controls exposed to LTG), 2024 10.510.01.0