Valproate (All indications) 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.
S16197
R67127
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
S16196
R67126
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
S17423
R73167
Madley-Dowd_SE (Valproate) (Controls exposed to LTG) (Mixed indications), 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: Yes Partial overlapping 2.19 [1.70;2.82]
excluded (control group)
111/1,178   134/5,035 245 1,178
ref
S17424
R73173
Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 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 (general population or NOS) Adjustment: Yes Partial overlapping 1.82 [1.49;2.21] 111/1,178   68,788/2,651,210 68,899 1,178
ref
S17425
R73179
Madley-Dowd_SE (Valproate) (Controls unexposed, sibling) (Mixed indications), 2024 Autism - ICD-8/9/10 codes - Mean 5-20 years old (according groups) during pregnancy (anytime or not specified) population based cohort retrospective sibling excluded Adjustment: Yes Partial overlapping 1.13 [0.65;1.99]
excluded (control group)
-/-   -/- - -
ref
S17286
R72340
Madley-Dowd_UK (Valproate) (Controls exposed to LTG) (Mixed indications), 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: Yes 1.38 [0.69;2.74]
excluded (control group)
14/423   20/939 34 423
ref
S17271
R72297
Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 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 (general population or NOS) Adjustment: Yes 1.51 [0.87;2.63] 14/423   7,657/514,066 7,671 423
ref
S17279
R72322
Madley-Dowd_UK (Valproate) (Controls unexposed, sibling) (Mixed indications), 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) sibling excluded Adjustment: Yes 0.81 [0.28;2.31]
excluded (control group)
-/-   -/- - -
ref
S12708
R47947
Bjørk (Valproate) (Controls exposed to Lamotrigine, sick) (Mixed indications), 2022 Diagnosis of childhood autism (F84.0), atypical autism (F84.1), and Asperger syndrome (F84.5) - Median follow up valproate 9.9 (6.0-14.3) years old during pregnancy (anytime or not specified) population based cohort retrospective exposed to other treatment, sick excluded Adjustment: No 3.36 [2.47;4.58] C
excluded (control group)
82/2,421   82/7,950 164 2,421
ref
S12519
R47160
Bjørk (Valproate) (Controls unexposed NOS) (Mixed indications), 2022 Diagnosis of childhood autism (F84.0), atypical autism (F84.1), and Asperger syndrome (F84.5) - Median follow up valproate 9.9 (6.0-14.3) years old during pregnancy (anytime or not specified) population based cohort retrospective unexposed (general population or NOS) excluded Adjustment: Yes 3.44 [2.77;4.28]
excluded (control group)
82/2,421   38,437/4,463,879 38,519 2,421
ref
S12707
R47944
Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 Diagnosis of childhood autism (F84.0), atypical autism (F84.1), and Asperger syndrome (F84.5) - Median follow up valproate 9.9 (6.0-14.3) years old during pregnancy (anytime or not specified) population based cohort retrospective unexposed, sick Adjustment: No Controls: epilepsy indication 2.81 [2.18;3.61] C 82/2,421   267/21,634 349 2,421
ref
S9391
R32879
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
S9392
R32897
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
S9404
R32952
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
S9431
R33120
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
S9377
R35213
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
S9380
R35214
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
S9383
R35215
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
S9278
R32185
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 2.53 [1.87;3.42] 81,355 5,739
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]12656116%ROB confusion: moderateROB selection: moderateROB classification: moderateROB missing: criticalROB mesure: criticalROB reporting: moderate Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024Madley-Dowd_SE, 2024 2 1.82[1.49; 2.21]68,8991,17825%ROB confusion: seriousROB selection: lowROB classification: lowROB missing: lowROB mesure: criticalROB reporting: moderate Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024Madley-Dowd_UK, 2024 3 1.51[0.87; 2.63]7,67142314%ROB confusion: seriousROB selection: lowROB classification: criticalROB missing: unclearROB mesure: criticalROB reporting: moderate Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022Bjørk, 2022 4 2.81[2.18; 3.61]3492,42123%ROB confusion: unclearROB selection: lowROB classification: moderateROB missing: unclearROB mesure: moderateROB reporting: moderate Coste (Valproate) (Controls unexposed, NOS), 2020Coste, 2020 5 4.60[2.90; 7.50]4,29799116%ROB confusion: NAROB selection: NAROB classification: NAROB missing: NAROB mesure: NAROB reporting: NA Huber-Mollema (Valproate), 2019Huber-Mollema, 2019 6 2.74[0.57; 13.12]7263%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 = 60% 2.53[1.87; 3.42]81,3555,7390.520.01.0ROB: 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, general pop) (Mixed indications; 3: Valproate) (Controls unexposed, general pop) (Mixed indications; 4: Valproate) (Controls unexposed, sick) (Mixed indications; 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 2.53[1.87; 3.42]81,3555,73960%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 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) 2.31[1.26; 4.24]80,8672,59285%NAMadley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Coste (Valproate) (Controls unexposed, NOS), 2020 3 unexposed, sickunexposed, sick 2.85[2.28; 3.57]4803,0950%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 4 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 2.81[2.20; 3.59]3622,5860%NABjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 Huber-Mollema (Valproate), 2019 Wood (Valproate), 2015 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 5   - Yes  - Yes 2.45[1.53; 3.91]80,9933,15381%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Coste (Valproate) (Controls unexposed, NOS), 2020 4 Controls   - epilepsy indication  - epilepsy indication 2.81[2.18; 3.61]3492,421 -NABjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 1 Partial overlappingPartial overlapping 1.82[1.49; 2.22]68,8991,178 -NAMadley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 1 All studiesAll studies 2.53[1.87; 3.42]81,3555,73960%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 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, general pop) (Mixed indications), 2024Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022Coste (Valproate) (Controls unexposed, NOS), 2020Huber-Mollema (Valproate), 2019Wood (Valproate), 2015Bromley (Valproate) (Controls unexposed, sick), 2013Adab (Valproate), 2004

Asymetry test p-value = 0.4965 (by Egger's regression)

slope=0.7403 (0.1713); intercept=0.5897 (0.8223); t=0.7171; p=0.4965

p values plot
0.01.00.01.0

Sub-groups analysis using all included studies

excluded 9377, 9380, 9391, 12708, 12519, 16197, 17423, 17425, 17286, 17279

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 2.69[1.73; 4.20]119,3945,06386%NAMadley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Bjørk (Valproate) (Controls unexposed NOS) (Mixed indications), 2022 Coste (Valproate) (Controls unexposed, NOS), 2020 Bromley (Valproate) (Controls unexposed, disease free), 2013 5 unexposed, sick controlsunexposed, sick controls 2.85[2.28; 3.57]4803,0950%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 Bromley (Valproate) (Controls unexposed, sick), 2013 Adab (Valproate), 2004 4 exposed to other treatment, sick controlsexposed to other treatment, sick controls 2.35[1.75; 3.16]5425,67643%NAHernandez-Diaz (Valproate) (Epilepsy) (Controls exposed to LTG), 2024 Madley-Dowd_SE (Valproate) (Controls exposed to LTG) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls exposed to LTG) (Mixed indications), 2024 Bjørk (Valproate) (Controls exposed to Lamotrigine, sick) (Mixed indications), 2022 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 1.05[0.64; 1.72]--0%NAMadley-Dowd_SE (Valproate) (Controls unexposed, sibling) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, sibling) (Mixed indications), 2024 20.510.01.0

Umbrella review (other published meta-analyses)

Published MAControlPeriodTE95% CIn exposedkI2 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio)) 6.42[2.02; 20.42]NA-SsiblingAnyduring pregnancy (anytime or not specified)studies TTT1 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Control LTG)) 2.50[1.14; 5.47]66%-Eexposed to other treatment, sickAnyduring pregnancy (anytime or not specified)studies TTT2 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Mono- and/or polytherapy)) 1.39[0.79; 2.45]0%-Wwhatever (meta-analysis)T11st trimesterstudies TTT2 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Mono- and/or polytherapy)) 1.56[0.32; 7.47]60%-Wwhatever (meta-analysis)T2-T32nd and/or 3rd trimesterstudies TTT2 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Mono- and/or polytherapy)) 3.04[1.98; 4.66]0%-Wwhatever (meta-analysis)T33rd trimesterstudies TTT2 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Mono- and/or polytherapy)) 3.10[2.24; 4.28]40 %-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT4 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Adjusted hazard ratio) (Monotherapy)) 3.13[2.14; 4.57]60%-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT3 Andrade (Valproate) (Autism spectrum disorder ...Andrade (Valproate) (Autism spectrum disorder (ASD) (Unadjusted risk ratio) (Mono- and/or polytherapy)) 4.19[3.08; 5.69]37 %-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT6 metaPregmetaPreg 2.53[1.87; 3.42]60%5,739----Hernandez-Diaz (Valproate) (Epilepsy) (Controls unexposed, sick), 2024 Madley-Dowd_SE (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Madley-Dowd_UK (Valproate) (Controls unexposed, general pop) (Mixed indications), 2024 Bjørk (Valproate) (Controls unexposed, sick) (Mixed indications), 2022 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