Lamotrigine (Epilepsy)

Limb defects

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.
S7514
R47136		 Thomas (Controls unexposed, sick), 2021 Skeletal malformations 1st trimester prospective cohort unexposed, sick Adjustment: No 1.36 [0.06;28.82] C 0/50   2/340 2 50
ref
S9826
R37686		 Vajda, 2013 Skeletal / Limb Malformations at least 1st trimester prospective cohort unexposed, sick Adjustment: No 0.15 [0.01;3.81] C 0/315   1/147 1 315
ref
S9843
R35299		 Mawer (Controls unexposed, disease free), 2010 Skeletal / Limb Malformations 1st trimester prospective cohort unexposed, disease free excluded Adjustment: No Matched 24.04 [0.96;601.51] C
excluded (control group) 		1/37   0/285 1 37
ref
S9844
R35305		 Mawer (Controls unexposed, sick), 2010 Skeletal / Limb Malformations 1st trimester prospective cohort unexposed, sick Adjustment: No 3.42 [0.14;86.71] C 1/37   0/41 1 37
ref
Total 3 studies 0.90 [0.15;5.60] 4 402
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 Thomas (Controls unexposed, sick), 2021Thomas, 2021 1 1.36[0.06; 28.82]25036%ROB confusion: seriousROB selection: moderateROB classification: moderateROB missing: unclearROB mesure: moderateROB reporting: moderate Vajda, 2013Vajda, 2013 0.15[0.01; 3.81]131532%ROB confusion: NAROB selection: NAROB classification: NAROB missing: NAROB mesure: NAROB reporting: NA Mawer (Controls unexposed, sick), 2010Mawer, 2010 2 3.42[0.14; 86.71]13732%ROB confusion: criticalROB selection: moderateROB classification: lowROB missing: moderateROB mesure: moderateROB reporting: moderate Total (3 studies) I2 = 0% 0.90[0.15; 5.60]44020.010.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Controls unexposed, sick; 2: Controls unexposed, sick;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 0.90[0.15; 5.60]44020%NAThomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 3 case control studiescase control studies 0 Type of controls unexposed, sickunexposed, sick 0.90[0.15; 5.60]44020%NAThomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 3 Tags Adjustment   - No  - No 0.90[0.15; 5.60]44020%NAThomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 3 All studiesAll studies 0.90[0.15; 5.60]44020%NAThomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 30.010.01.0

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 9843

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) Out of scale24.04[0.96; 601.51]137 -NAMawer (Controls unexposed, disease free), 2010 1 unexposed, sick controlsunexposed, sick controls 0.90[0.15; 5.60]44020%NAThomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 30.510.01.0

Umbrella review (other published meta-analyses)

Published MATE95% CIn exposedkI2Control groupExposition period WestonWeston Out of scale23.12[0.96; 558.25]NA-unexposed, disease freeduring pregnancy (anytime or not specified)studies1 WestonWeston 0.72[0.12; 4.12]40-unexposed, sickduring pregnancy (anytime or not specified)studies2 metaPregmetaPreg 0.90[0.15; 5.60]0%402--Thomas (Controls unexposed, sick), 2021 Vajda, 2013 Mawer (Controls unexposed, sick), 2010 30.510.01.0