Gabapentin (All indications) updated on 04-22-2025

Small for gestational age (weight)

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.
S16190
R79478
The NAAED (Controls exposed to LTG) (Indications NOS), 2025 Small for gestational age at least 1st trimester prospective cohort exposed to other treatment, sick excluded Adjustment: No 1.19 [0.76;1.88] C
excluded (control group)
23/270   178/2,461 201 270
ref
S16180
R79476
The NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Small for gestational age at least 1st trimester prospective cohort unexposed, disease free Adjustment: No 0.89 [0.56;1.42] C 23/270   124/1,311 147 270
ref
S16070
R66690
Christensen (Gabapentin) (All indications) (Controls exposed to LTG), 2024 Small for gestational age (a z-score for birth weight ≤10th 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 1.23 [1.03;1.46] C
excluded (control group)
168/1,336   920/8,756 1,088 1,336
ref
S16034
R66556
Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Small for gestational age (a z-score for birth weight ≤10th percentile for gestational week, sex, and country (including newborns with congenital malformations)) during pregnancy (anytime or not specified) population based cohort retrospective unexposed (general population or NOS) Adjustment: Yes 1.13 [0.96;1.34] 168/1,336   446,267/4,467,848 446,435 1,336
ref
S8517
R28090
Coste (Controls unexposed, NOS) (Mixed indications), 2020 Small for gestational age (weight) during pregnancy (anytime or not specified) retrospective cohort (claims database) unexposed (general population or NOS) Adjustment: No 1.25 [0.91;1.70] C 45/378   167,376/1,710,441 167,421 378
ref
Total 3 studies 1.13 [0.98;1.30] 614,003 1,984
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 The NAAED (Controls unexposed, disease free) (Indications NOS), 2025The NAAED, 2025 1 0.89[0.56; 1.42]1472709%ROB confusion: criticalROB selection: unclearROB classification: moderateROB missing: unclearROB mesure: moderateROB reporting: low Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024Christensen, 2024 2 1.13[0.96; 1.34]446,4351,33671%ROB confusion: seriousROB selection: lowROB classification: criticalROB missing: lowROB mesure: moderateROB reporting: moderate Coste (Controls unexposed, NOS) (Mixed indications), 2020Coste, 2020 3 1.25[0.91; 1.70]167,42137820%ROB confusion: NAROB selection: NAROB classification: NAROB missing: NAROB mesure: NAROB reporting: NA Total (3 studies) I2 = 0% 1.13[0.98; 1.30]614,0031,9840.25.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Controls unexposed, disease free) (Indications NOS; 2: Gabapentin) (All indications) (Controls unexposed, general population; 3: Controls unexposed, NOS) (Mixed indications;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 1.13[0.98; 1.30]614,0031,9840%NAThe NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Coste (Controls unexposed, NOS) (Mixed indications), 2020 3 case control studiescase control studies 0 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 1.13[0.98; 1.30]614,0031,9840%NAThe NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Coste (Controls unexposed, NOS) (Mixed indications), 2020 3 Tags Adjustment   - No  - No 1.10[0.81; 1.51]167,56864827%NAThe NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Coste (Controls unexposed, NOS) (Mixed indications), 2020 2   - Yes  - Yes 1.13[0.96; 1.34]446,4351,336 -NAChristensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 1 All studiesAll studies 1.13[0.98; 1.30]614,0031,9840%NAThe NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Coste (Controls unexposed, NOS) (Mixed indications), 2020 30.25.01.0

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 16070, 16190

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 1.13[0.98; 1.30]614,0031,9840%NAThe NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Coste (Controls unexposed, NOS) (Mixed indications), 2020 3 exposed to other treatment, sick controlsexposed to other treatment, sick controls 1.22[1.04; 1.44]1,2891,6060%NAThe NAAED (Controls exposed to LTG) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls exposed to LTG), 2024 20.510.01.0

Umbrella review (other published meta-analyses)

Published MAControlPeriodTE95% CIn exposedkI2 Veroniki a (NMA) (All indications) (Prenatal ...Veroniki a (NMA) (All indications) (Prenatal growth restriction) 1.37[0.44; 3.61]NA-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT-9 metaPregmetaPreg 1.13[0.98; 1.30]0%1,984----The NAAED (Controls unexposed, disease free) (Indications NOS), 2025 Christensen (Gabapentin) (All indications) (Controls unexposed, general population), 2024 Coste (Controls unexposed, NOS) (Mixed indications), 2020 30.510.01.0