Acetaminophen (Paracetamol) updated on 09-20-2024

Late intrauterine deaths (> 22 weeks) / Stillbirths

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.
S18496
R78607
Xu, 2024 Stillbirth (NOS) during pregnancy (anytime or not specified) retrospective cohort unexposed (general population or NOS) Adjustment: Yes Paracetamol use: prescription or medical files 2.29 [1.19;4.43] 41/501   24/501 65 501
ref
S18513
R78656
Zafeiri, 2022 Stillbirth during pregnancy (anytime or not specified) retrospective cohort unexposed (general population or NOS) Adjustment: Yes Paracetamol use: maternal ITW/questionnaires during pregnancy 1.52 [1.30;1.77] 275/23,979   803/106,752 1,078 23,979
ref
S18546
R78823
Rebordosa, 2009 Stillbirth (dead fetus delivered spontaneously after the 28th gestational week (>196 days)) during pregnancy (anytime or not specified) prospective cohort unexposed (general population or NOS) Adjustment: Yes Paracetamol use: maternal ITW/questionnaires during pregnancy 0.90 [0.69;1.19] 98/-   111/- 209 -
ref
S18623
R79152
Pastore, 1999 Stillbirths (fetal deaths at 20 weeks' gestation or later) and infant deaths within 24 h of birth 2nd trimester case control unexposed (general population or NOS) Adjustment: Yes Matched Paracetamol use: maternal ITW/questionnaires after pregnancy 0.90 [0.80;1.00] 95/219   237/470 332 219
ref
Total 4 studies 1.21 [0.84;1.73] 1,684 24,699
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 Xu, 2024Xu, 2024 2.29[1.19; 4.43]6550115%ROB confusion: seriousROB selection: unclearROB classification: moderateROB missing: criticalROB mesure: moderateROB reporting: moderate Zafeiri, 2022Zafeiri, 2022 1.52[1.30; 1.77]1,07823,97929%ROB confusion: seriousROB selection: criticalROB classification: moderateROB missing: lowROB mesure: moderateROB reporting: moderate Rebordosa, 2009Rebordosa, 2009 0.90[0.69; 1.19]209-26%ROB confusion: moderateROB selection: moderateROB classification: moderateROB missing: criticalROB mesure: moderateROB reporting: moderate Pastore, 1999Pastore, 1999 0.90[0.80; 1.00]33221930%ROB confusion: criticalROB selection: criticalROB classification: criticalROB missing: unclearROB mesure: moderateROB reporting: moderate Total (4 studies) I2 = 92% 1.21[0.84; 1.73]1,68424,6990.25.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 1.37[0.88; 2.15]1,35224,48085%NAXu, 2024 Zafeiri, 2022 Rebordosa, 2009 3 case control studiescase control studies 0.90[0.80; 1.01]332219 -NAPastore, 1999 1 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 1.21[0.84; 1.73]1,68424,69992%NAXu, 2024 Zafeiri, 2022 Rebordosa, 2009 Pastore, 1999 4 Tags Adjustment   - Yes  - Yes 1.21[0.84; 1.73]1,68424,69992%NAXu, 2024 Zafeiri, 2022 Rebordosa, 2009 Pastore, 1999 4 MatchedMatched 0.90[0.80; 1.01]332219 -NAPastore, 1999 1 Paracetamol use   - maternal ITW/questionnaires after p ...  - maternal ITW/questionnaires after pregnancy 0.90[0.80; 1.01]332219 -NAPastore, 1999 1   - maternal ITW/questionnaires during ...  - maternal ITW/questionnaires during pregnancy 1.18[0.71; 1.98]1,28723,97991%NAZafeiri, 2022 Rebordosa, 2009 2   - prescription or medical files  - prescription or medical files 2.29[1.19; 4.42]65501 -NAXu, 2024 1 All studiesAll studies 1.21[0.84; 1.73]1,68424,69992%NAXu, 2024 Zafeiri, 2022 Rebordosa, 2009 Pastore, 1999 40.25.01.0

Publication bias and p-hacking diagnosis

funnel plot
0.0-1.01.00.4020.000Xu, 2024Zafeiri, 2022Rebordosa, 2009Pastore, 1999

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

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed controls (disease free or unspecified)unexposed controls (disease free or unspecified) 1.21[0.84; 1.73]1,68424,69992%NAXu, 2024 Zafeiri, 2022 Rebordosa, 2009 Pastore, 1999 40.510.01.0