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

Intrauterine deaths (as a whole or unspecified)

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.
S18752
R79754
Moore (Gabapentin) (Mixed indications) (Controls exposed to LTG), 2025 Pregnancy loss (pregnancy outcome other than live birth at any gestation, including spontaneous loss (miscarriage, stillbirth) and termination of pregnancy) during pregnancy (anytime or not specified) population based cohort retrospective exposed to other treatment, sick excluded Adjustment: No 1.49 [1.31;1.70] C
excluded (control group)
852/2,624   481/1,976 1,333 2,624
ref
S18753
R79758
Moore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 Pregnancy loss (pregnancy outcome other than live birth at any gestation, including spontaneous loss (miscarriage, stillbirth) and termination of pregnancy) during pregnancy (anytime or not specified) population based cohort retrospective unexposed (general population or NOS) Adjustment: Yes Matched 1.33 [1.21;1.46] 852/2,624   5,952/25,691 6,804 2,624
ref
S8500
R27931
Vajda (Controls exposed to Lamotrigine, sick), 2018 Intrauterine foetal death throughout pregnancy prospective cohort exposed to other treatment, sick excluded Adjustment: No 0.94 [0.05;16.57] C
excluded (control group)
0/14   14/382 14 14
ref
S8501
R27932
Vajda (Controls unexposed, sick), 2018 Intrauterine foetal death throughout pregnancy prospective cohort unexposed, sick Adjustment: No 4.16 [0.16;107.12] C 0/14   1/170 1 14
ref
S8490
R27884
Miškov (Controls exposed to Lamotrigine, sick), 2016 Fetal loss during pregnancy (anytime or not specified) prospective cohort exposed to other treatment, sick excluded Adjustment: No 2.41 [0.08;68.55] C
excluded (control group)
0/2   4/37 4 2
ref
S8491
R27890
Miškov (Controls unexposed, disease free), 2016 Fetal loss during pregnancy (anytime or not specified) prospective cohort unexposed, disease free excluded Adjustment: No 85.00 [1.23;5885.76] C
excluded (control group)
0/2   0/128 0 2
ref
S8492
R27896
Miškov (Controls unexposed, sick), 2016 Fetal loss during pregnancy (anytime or not specified) prospective cohort unexposed, sick Adjustment: No 2.33 [0.03;182.92] C 0/2   0/4 0 2
ref
S8485
R27853
Arkilo, 2015 Unsuccessful pregnancies (miscarriages/stillbirths) during pregnancy (anytime or not specified) retrospective cohort exposed to other treatment, sick Adjustment: No 8.60 [0.14;536.34] C 0/1   2/24 2 1
ref
Total 4 studies 1.33 [1.21;1.46] 6,807 2,641
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 Moore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025Moore, 2025 1 1.33[1.21; 1.46]6,8042,624100%ROB confusion: seriousROB selection: lowROB classification: moderateROB missing: unclearROB mesure: moderateROB reporting: low Vajda (Controls unexposed, sick), 2018Vajda, 2018 2 4.16[0.16; 107.12]1140%ROB confusion: criticalROB selection: moderateROB classification: lowROB missing: lowROB mesure: moderateROB reporting: moderate Miškov (Controls unexposed, sick), 2016Miškov, 2016 3 2.33[0.03; 182.92]020%ROB confusion: criticalROB selection: lowROB classification: moderateROB missing: criticalROB mesure: moderateROB reporting: moderate Arkilo, 2015Arkilo, 2015 8.60[0.14; 536.34]210%ROB confusion: criticalROB selection: criticalROB classification: criticalROB missing: unclearROB mesure: moderateROB reporting: moderate Total (4 studies) I2 = 0% 1.33[1.21; 1.46]6,8072,6410.520.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Gabapentin) (Mixed indications) (Controls unexposed, general pop; 2: Controls unexposed, sick; 3: Controls unexposed, sick;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 1.33[1.21; 1.46]6,8072,6410%NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 Vajda (Controls unexposed, sick), 2018 Miškov (Controls unexposed, sick), 2016 Arkilo, 2015 4 case control studiescase control studies 0 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 1.33[1.21; 1.46]6,8042,624 -NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 1 unexposed, sickunexposed, sick 3.38[0.25; 45.81]1160%NAVajda (Controls unexposed, sick), 2018 Miškov (Controls unexposed, sick), 2016 2 exposed to other treatment, sickexposed to other treatment, sick 8.60[0.14; 536.34]21 -NAArkilo, 2015 1 Tags Adjustment   - No  - No 4.41[0.49; 39.98]3170%NAVajda (Controls unexposed, sick), 2018 Miškov (Controls unexposed, sick), 2016 Arkilo, 2015 3   - Yes  - Yes 1.33[1.21; 1.46]6,8042,624 -NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 1 MatchedMatched 1.33[1.21; 1.46]6,8042,624 -NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 1 All studiesAll studies 1.33[1.21; 1.46]6,8072,6410%NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 Vajda (Controls unexposed, sick), 2018 Miškov (Controls unexposed, sick), 2016 Arkilo, 2015 40.520.01.0

Publication bias and p-hacking diagnosis

funnel plot
0.0-5.25.52.6700.000Moore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025Vajda (Controls unexposed, sick), 2018Miškov (Controls unexposed, sick), 2016Arkilo, 2015

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

not enought points

p values plot
0.01.00.01.0

Sub-groups analysis using all included studies

excluded 8490, 8491, 8500, 18752

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 6.06[0.12; 306.33]6,8042,62673%NAMoore (Gabapentin) (Mixed indications) (Controls unexposed, general pop), 2025 Miškov (Controls unexposed, disease free), 2016 2 unexposed, sick controlsunexposed, sick controls 3.38[0.25; 45.81]1160%NAVajda (Controls unexposed, sick), 2018 Miškov (Controls unexposed, sick), 2016 2 exposed to other treatment, sick controlsexposed to other treatment, sick controls 1.50[1.31; 1.71]1,3532,6410%NAMoore (Gabapentin) (Mixed indications) (Controls exposed to LTG), 2025 Vajda (Controls exposed to Lamotrigine, sick), 2018 Miškov (Controls exposed to Lamotrigine, sick), 2016 Arkilo, 2015 40.510.01.0