Calcium channel blockers (versus unexposed)

Hydrocephaly

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.
S13787
R54025
Fisher a - Calcium blockers, 2018 Hydrocephaly 1st trimester case control unexposed, disease free Adjustment: No Indications Antihypertensive: All hypertensions, any indications or not specified 0.84 [0.05;14.04] C 0/14   436/10,993 436 14
ref
S13996
R54981
Sorensen - Calcium blockers, 2001 Hydrocephaly 1st trimester case control unexposed (general population or NOS) Adjustment: Yes Indications Antihypertensive: All hypertensions, any indications or not specified 2.50 [0.30;18.10] 1/50   310/38,412 311 50
ref
Total 2 studies 1.71 [0.33;8.99] 747 64
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 Fisher a - Calcium blockers, 2018Fisher a - Calcium blockers, 2018 0.84[0.05; 14.04]4361435%ROB confusion: criticalROB selection: criticalROB classification: criticalROB missing: lowROB mesure: unclearROB reporting: moderate Sorensen - Calcium blockers, 2001Sorensen - Calcium blockers, 2001 2.50[0.30; 18.10]3115065%ROB confusion: criticalROB selection: criticalROB classification: moderateROB missing: lowROB mesure: unclearROB reporting: moderate Total (2 studies) I2 = 0% 1.71[0.33; 8.99]747640.25.01.0ROB: 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 0 case control studiescase control studies 1.71[0.33; 8.99]747640%NAFisher a - Calcium blockers, 2018 Sorensen - Calcium blockers, 2001 2 Type of controls unexposed (disease free or unspecified)unexposed (disease free or unspecified) 1.71[0.33; 8.99]747640%NAFisher a - Calcium blockers, 2018 Sorensen - Calcium blockers, 2001 2 Tags Adjustment   - No  - No 0.84[0.05; 14.04]43614 -NAFisher a - Calcium blockers, 2018 1   - Yes  - Yes 2.50[0.32; 19.42]31150 -NASorensen - Calcium blockers, 2001 1 Indications Antihypertensive   - All hypertensions, any indications ...  - All hypertensions, any indications or not specified 1.71[0.33; 8.99]747640%NAFisher a - Calcium blockers, 2018 Sorensen - Calcium blockers, 2001 2 All studiesAll studies 1.71[0.33; 8.99]747640%NAFisher a - Calcium blockers, 2018 Sorensen - Calcium blockers, 2001 20.25.01.0

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) 1.71[0.33; 8.99]747640%NAFisher a - Calcium blockers, 2018 Sorensen - Calcium blockers, 2001 20.510.01.0