Phenytoin (All indications)

Late intrauterine deaths (> 22 weeks)

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.
S9192
R31824
Aydin (Phenytoin) (Controls exposed to Lamotrigine, sick), 2020 Intrauterine fetal demise throughout pregnancy retrospective cohort exposed to other treatment, sick excluded Adjustment: No 13.00 [0.10;1680.94] C
excluded (control group)
0/1   0/7 0 1
ref
S9193
R31834
Aydin (Phenytoin) (Controls unexposed, sick), 2020 Intrauterine fetal demise throughout pregnancy retrospective cohort unexposed, sick Adjustment: No 43.00 [0.35;5328.22] C 0/1   0/22 0 1
ref
S9186
R31767
Arkilo (Phenytoin), 2015 Stillbirth during pregnancy (anytime or not specified) retrospective cohort exposed to other treatment, sick Adjustment: No 5.22 [0.09;299.04] C 0/5   0/24 0 5
ref
Total 2 studies 12.49 [0.56;277.13] 0 6
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 Aydin (Phenytoin) (Controls unexposed, sick), 2020Aydin, 2020 1 43.00[0.35; 5328.22]0141%ROB confusion: criticalROB selection: criticalROB classification: moderateROB missing: lowROB mesure: moderateROB reporting: moderate Arkilo (Phenytoin), 2015Arkilo, 2015 2 5.22[0.09; 299.04]0559%ROB confusion: criticalROB selection: criticalROB classification: criticalROB missing: unclearROB mesure: moderateROB reporting: moderate Total (2 studies) I2 = 0% 12.49[0.56; 277.13]-60.9100.01.0ROB: A: confusion, B: selection, C: classification, D: missing, E: measurement, F: reportinglow,moderate,serious,critical,unclear,

1: Phenytoin) (Controls unexposed, sick; 2: Phenytoin;

Sensitivity analysis

SubsetTE95% CIn casesn exposedkI2 Type of studies cohort studiescohort studies 12.49[0.56; 277.13]-60%NAAydin (Phenytoin) (Controls unexposed, sick), 2020 Arkilo (Phenytoin), 2015 2 case control studiescase control studies 0 Type of controls unexposed, sickunexposed, sick 43.00[0.35; 5328.22]-1 -NAAydin (Phenytoin) (Controls unexposed, sick), 2020 1 exposed to other treatment, sickexposed to other treatment, sick 5.22[0.09; 299.04]-5 -NAArkilo (Phenytoin), 2015 1 Tags Adjustment   - No  - No 12.49[0.56; 277.13]-60%NAAydin (Phenytoin) (Controls unexposed, sick), 2020 Arkilo (Phenytoin), 2015 2 All studiesAll studies 12.49[0.56; 277.13]-60%NAAydin (Phenytoin) (Controls unexposed, sick), 2020 Arkilo (Phenytoin), 2015 20.5100.01.0

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 9192

Sub-groupsTE95% CIn casesn exposedkI2ROB type of controls unexposed, sick controlsunexposed, sick controls Out of scale43.00[0.35; 5328.22]-1 -NAAydin (Phenytoin) (Controls unexposed, sick), 2020 1 exposed to other treatment, sick controlsexposed to other treatment, sick controls 7.59[0.34; 170.21]-60%NAAydin (Phenytoin) (Controls exposed to Lamotrigine, sick), 2020 Arkilo (Phenytoin), 2015 20.510.01.0