Valproate (Epilepsy) updated on 04-22-2025

ASD (Autism spectrum disorder): Diagnosis

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.
S16764
R70394
Hernandez-Diaz (Valproate) (Epilepsy) (Controls exposed to LTG), 2024 Autism spectrum disorder (ASD) - At least two visits with codes for ASD - Median follow-up was 2 years 2nd and/or 3rd trimester retrospective cohort (claims database) exposed to other treatment, sick excluded Adjustment: No 1.59 [0.95;2.68] C
excluded (control group)
24/561   38/1,392 62 561
ref
S16765
R70396
Hernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Autism spectrum disorder (ASD) - At least two visits with codes for ASD - Median follow-up was 2 years 2nd and/or 3rd trimester retrospective cohort (claims database) unexposed, sick Adjustment: Yes 2.96 [1.79;4.89] 24/561   102/8,815 126 561
ref
S17439
R73278
Madley-Dowd_SE (Valproate) (Controls exposed to LTG), 2024 Autism - ICD-8/9/10 codes - Mean 5-20 years old (according groups) during pregnancy (anytime or not specified) population based cohort retrospective exposed to other treatment, sick excluded Adjustment: No Partial overlapping 5.08 [3.56;7.24] C
excluded (control group)
82/792   53/2,383 135 792
ref
S17440
R73284
Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Autism - ICD-8/9/10 codes - Mean 5-20 years old (according groups) during pregnancy (anytime or not specified) population based cohort retrospective unexposed, sick Adjustment: Yes Partial overlapping 2.15 [1.69;2.73] 82/792   425/10,769 507 792
ref
S17261
R72231
Madley-Dowd_UK (Valproate) (Controls exposed to LTG) (Epilepsy), 2024 Autism - ICD10 codes - Median follow up 9.32 (5.54-12.83) years old during pregnancy (anytime or not specified) retrospective cohort (claims database) exposed to other treatment, sick excluded Adjustment: No 1.46 [0.68;3.15] C
excluded (control group)
11/354   17/791 28 354
ref
S17256
R72219
Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Autism - ICD10 codes - Median follow up 9.32 (5.54-12.83) years old during pregnancy (anytime or not specified) retrospective cohort (claims database) unexposed, sick Adjustment: Yes 1.41 [0.75;2.67] 11/354   78/4,075 89 354
ref
S15877
R65488
Dreier (Valproate) (Epilepsy) (Controls exposed to LTG), 2023 Autism spectrum disorder - Corresponding ICD-10 F-chapter - Up to 22 years of age during pregnancy (anytime or not specified) population based cohort propective exposed to other treatment, sick excluded Adjustment: No 4.08 [2.96;5.64] C
excluded (control group)
93/1,952   64/5,288 157 1,952
ref
S18070
R76061
Dreier (Valproate) (Epilepsy) (Controls unexposed, sibling), 2023 Autism spectrum disorder - ICD-10 code F84 excluding F84.2-F84.4 - Up to 22 years of age (median 7.2 years) during pregnancy (anytime or not specified) population based cohort propective sibling excluded Adjustment: Yes 6.41 [2.00;20.58]
excluded (control group)
32/529   11/604 43 529
ref
S15878
R65477
Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Autism spectrum disorder - Corresponding ICD-10 F-chapter - Up to 22 years of age during pregnancy (anytime or not specified) population based cohort propective unexposed, sick Adjustment: Yes 2.45 [1.84;3.26] 93/1,952   323/22,203 416 1,952
ref
S10070
R36645
Coste (Valproate) (Controls exposed to Lamotrigine, sick), 2020 Diagnosis Pervasive developmental disorders (F84) (mean age of 3.7 years old) during pregnancy (anytime or not specified) retrospective cohort (claims database) exposed to other treatment, sick excluded Adjustment: Yes 4.70 [1.90;11.40]
excluded (control group)
17/991   7/2,108 24 991
ref
S7799
R23030
Coste (Valproate) (Controls unexposed, NOS), 2020 Diagnosis Pervasive developmental disorders (F84) (mean age of 3.6 years old) during pregnancy (anytime or not specified) retrospective cohort (claims database) unexposed (general population or NOS) Adjustment: Yes 4.60 [2.90;7.50] 17/991   4,280/1,710,441 4,297 991
ref
S7508
R22469
Huber-Mollema (Valproate), 2019 Diagnosis of autism spectrum disorder throughout pregnancy prospective cohort exposed to other treatment, sick Adjustment: No 2.74 [0.57;13.12] C 3/26   4/88 7 26
ref
S5549
R16273
Wood (Valproate), 2015 Score >30 (CARS) during pregnancy (anytime or not specified) prospective cohort exposed to other treatment, sick Adjustment: No 1.04 [0.04;28.06] C 1/26   0/9 1 26
ref
S6662
R35210
Bromley (Valproate) (Controls exposed to Lamotrigine, sick), 2013 Autistic Spectrum Disorders (at 6 years old) during pregnancy (anytime or not specified) prospective cohort exposed to other treatment, sick excluded Adjustment: No 2.52 [0.27;23.69] C
excluded (control group)
4/50   1/30 5 50
ref
S6659
R35211
Bromley (Valproate) (Controls unexposed, disease free), 2013 Autistic Spectrum Disorders (at 6 years old) during pregnancy (anytime or not specified) prospective cohort unexposed, disease free excluded Adjustment: No 4.57 [1.10;18.93] C
excluded (control group)
4/50   4/214 8 50
ref
S6602
R35212
Bromley (Valproate) (Controls unexposed, sick), 2013 Autistic Spectrum Disorders (at 6 years old) during pregnancy (anytime or not specified) prospective cohort unexposed, sick Adjustment: No 5.04 [0.26;97.51] C 4/50   0/26 4 50
ref
S7175
R27086
Adab (Valproate), 2004 Asperger’s syndrome during pregnancy (anytime or not specified) retrospective cohort unexposed, sick Adjustment: No 4.90 [0.20;122.25] C 1/63   0/101 1 63
ref
Total 9 studies 2.54 [2.00;3.23] 5,448 4,815
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 Hernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024Hernandez-Diaz, 2024 1 2.96[1.79; 4.89]12656115%ROB confusion: moderateROB selection: moderateROB classification: moderateROB missing: criticalROB mesure: criticalROB reporting: moderate Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024Madley-Dowd_SE, 2024 2 2.15[1.69; 2.73]50779229%ROB confusion: moderateROB selection: lowROB classification: lowROB missing: lowROB mesure: criticalROB reporting: moderate Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024Madley-Dowd_UK, 2024 3 1.41[0.75; 2.67]8935411%ROB confusion: moderateROB selection: lowROB classification: criticalROB missing: unclearROB mesure: criticalROB reporting: moderate Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023Dreier, 2023 4 2.45[1.84; 3.26]4161,95226%ROB confusion: seriousROB selection: lowROB classification: moderateROB missing: lowROB mesure: criticalROB reporting: moderate Coste (Valproate) (Controls unexposed, NOS), 2020Coste, 2020 5 4.60[2.90; 7.50]4,29799116%ROB confusion: moderateROB selection: moderateROB classification: moderateROB missing: moderateROB mesure: criticalROB reporting: moderate Huber-Mollema (Valproate), 2019Huber-Mollema, 2019 6 2.74[0.57; 13.12]7262%ROB confusion: criticalROB selection: lowROB classification: moderateROB missing: criticalROB mesure: moderateROB reporting: moderate Wood (Valproate), 2015Wood, 2015 7 1.04[0.04; 28.06]1261%ROB confusion: criticalROB selection: lowROB classification: moderateROB missing: criticalROB mesure: lowROB reporting: moderate Bromley (Valproate) (Controls unexposed, sick), 2013Bromley, 2013 8 5.04[0.26; 97.51]4501%ROB confusion: criticalROB selection: lowROB classification: lowROB missing: moderateROB mesure: moderateROB reporting: moderate Adab (Valproate), 2004Adab, 2004 9 4.90[0.20; 122.25]1631%ROB confusion: criticalROB selection: criticalROB classification: lowROB missing: criticalROB mesure: lowROB reporting: moderate Total (9 studies) I2 = 34% 2.54[2.00; 3.23]5,4484,8150.520.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Valproate) (Epilepsy) (Controls unexposed, sick; 2: Valproate) (Controls unexposed, sick; 3: Valproate) (Controls unexposed, sick) (Epilepsy; 4: Valproate) (Epilepsy) (Controls unexposed, sick; 5: Valproate) (Controls unexposed, NOS; 6: Valproate; 7: Valproate; 8: Valproate) (Controls unexposed, sick; 9: Valproate;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 2.54[2.00; 3.23]5,4484,81534%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Coste (Valproate) (Controls unexposed, NOS), 2020 Huber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 9 case control studiescase control studies 0 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 4.60[2.86; 7.40]4,297991 -NACoste (Valproate) (Controls unexposed, NOS), 2020 1 unexposed, sickunexposed, sick 2.27[1.92; 2.68]1,1433,7720%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 6 exposed to other treatment, sickexposed to other treatment, sick 2.29[0.56; 9.43]8520%NAHuber-Mollema (Valproate), 2019 Wood (Valproate), 2015 2 Tags Adjustment   - No  - No 2.88[0.88; 9.45]131650%NAHuber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 4   - Yes  - Yes 2.54[1.89; 3.41]5,4354,65065%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Coste (Valproate) (Controls unexposed, NOS), 2020 5 Partial overlappingPartial overlapping 2.15[1.69; 2.73]507792 -NAMadley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 1 All studiesAll studies 2.54[2.00; 3.23]5,4484,81534%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Coste (Valproate) (Controls unexposed, NOS), 2020 Huber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 90.520.01.0

Publication bias and p-hacking diagnosis

funnel plot
0.0-4.04.92.0170.000Hernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023Coste (Valproate) (Controls unexposed, NOS), 2020Huber-Mollema (Valproate), 2019Wood (Valproate), 2015Bromley (Valproate) (Controls unexposed, sick), 2013Adab (Valproate), 2004

Asymetry test p-value = 0.6715 (by Egger's regression)

slope=0.8406 (0.1627); intercept=0.3020 (0.6824); t=0.4425; p=0.6715

p values plot
0.01.00.01.0

Sub-groups analysis using all included studies

excluded 6662, 6659, 10070, 15877, 18070, 16764, 17439, 17261

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 4.60[2.93; 7.21]4,3051,0410%NACoste (Valproate) (Controls unexposed, NOS), 2020 Bromley (Valproate) (Controls unexposed, disease free), 2013 2 unexposed, sick controlsunexposed, sick controls 2.27[1.92; 2.68]1,1433,7720%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 6 exposed to other treatment, sick controlsexposed to other treatment, sick controls 2.97[1.93; 4.58]4194,75265%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls exposed to LTG), 2024 Madley-Dowd_SE (Valproate) (Controls exposed to LTG), 2024 Madley-Dowd_UK (Valproate) (Controls exposed to LTG) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls exposed to LTG), 2023 Coste (Valproate) (Controls exposed to Lamotrigine, sick), 2020 Huber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls exposed to Lamotrigine, sick), 2013 8 siblingssiblings 6.41[2.00; 20.56]43529 -NADreier (Valproate) (Epilepsy) (Controls unexposed, sibling), 2023 10.510.01.0

Umbrella review (other published meta-analyses)

Published MAControlPeriodTE95% CIn exposedkI2 Andrade (Autism spectrum disorder (ASD) (Adju ...Andrade (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Mono- and/or polytherapy)) 3.13[2.14; 4.57]60 %-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT3 metaPregmetaPreg 2.54[2.00; 3.23]34%4,815----Hernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, sick), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sick) (Epilepsy), 2024 Dreier (Valproate) (Epilepsy) (Controls unexposed, sick), 2023 Coste (Valproate) (Controls unexposed, NOS), 2020 Huber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 90.510.01.0