Clonazepam (Psy and Mixed indications) updated on 02-10-2025

ASD (Autism spectrum disorder): Diagnosis/Risk

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.
S15671
R64701
Bjørk (Mixed indications), 2022 Diagnosis autism spectrum disorder (ASD): childhood autism (F84.0), atypical autism (F84.1), and Asperger syndrome (F84.5) - Median follow up clonazepam 9.5 (5.5-13.9) years old during pregnancy (anytime or not specified) population based cohort retrospective unexposed (general population or NOS) Adjustment: Yes BZD Coexposure: No (among antiseizure medications) 1.43 [0.96;2.12] 25/1,182   38,437/4,463,879 38,462 1,182
ref
S15674
R64726
Coste (Indications other than epilepsy), 2020 Diagnosis Pervasive developmental disorders (F84) - Mean age follow-up 4.4 years old during pregnancy (anytime or not specified) retrospective cohort (claims database) unexposed (general population or NOS) Adjustment: Yes BZD Coexposure: No (among antiseizure medications) 1.10 [0.50;2.10] 8/1,246   4,280/1,710,441 4,288 1,246
ref
Total 2 studies 1.34 [0.95;1.90] 42,750 2,428
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 Bjørk (Mixed indications), 2022Bjørk, 2022 1 1.43[0.96; 2.12]38,4621,18277%ROB confusion: moderateROB selection: lowROB classification: criticalROB missing: lowROB mesure: criticalROB reporting: moderate Coste (Indications other than epilepsy), 2020Coste, 2020 2 1.10[0.50; 2.10]4,2881,24623%ROB confusion: seriousROB selection: moderateROB classification: criticalROB missing: moderateROB mesure: criticalROB reporting: moderate Total (2 studies) I2 = 0% 1.34[0.95; 1.90]42,7502,4280.55.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Mixed indications; 2: Indications other than epilepsy;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 2 case control studiescase control studies 0 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 2 Tags Adjustment   - Yes  - Yes 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 2 BZD Coexposure   - No (among antiseizure medications)  - No (among antiseizure medications) 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 2 All studiesAll studies 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 20.55.01.0

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

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 1.34[0.95; 1.90]42,7502,4280%NABjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 20.510.01.0

Umbrella review (other published meta-analyses)

Published MAControlPeriodTE95% CIn exposedkI2 Xu (All indications) (ASD risk)Xu (All indications) (ASD risk) 1.38[0.94; 2.01]0%-U,GPunexposed (general population or NOS)Anyduring pregnancy (anytime or not specified)studies TTT-9 Veroniki b - Clonazepam (All indications) (Au ...Veroniki b - Clonazepam (All indications) (Autism / Dyspraxia) 6.51[0.47; 112.40]NA-Wwhatever (meta-analysis)Anyduring pregnancy (anytime or not specified)studies TTT-9 metaPregmetaPreg 1.34[0.95; 1.90]0%2,428----Bjørk (Mixed indications), 2022 Coste (Indications other than epilepsy), 2020 20.510.01.0