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Clomiphene
Overall results
Study description
Excluded studies
Table
Graphic
auto
during pregnancy (anytime or not specified)
1st trimester
2nd trimester
3rd trimester
2nd and/or 3rd trimester
throughout pregnancy
early pregnancy
days before delivery
late pregnancy
preconception-only
periconceptional
preconceptional for kinetic reason
at least 1st trimester
3 months (or more) before pregnancy or during pregnancy
1st and 2nd trimester
3 months or more before pregnancy or1st trimester
Whatever the period exposition
individual studies
Outcome
TE
95% CI
n cases
n exposed
k
Pub. bias
Congenital malformations
Neural Tube Defects
Milunsky, 1990 Shaw, 1995 Lammer, 1995 Banhidy, 2008 Benedum, 2016 Weller, 2017
6
1.50
[
1.00
; 2.25]
2,953
2,488
not evaluable
All congenital malformations (majors, minors, majors and minors, or unspecified)
Mili, 1991 Banhidy, 2008 Weller, 2017 Nehard, 2024
4
1.15
[
0.98
; 1.35]
33,877
2,286
not evaluable
Hypospadias
Sorensen, 2005 Meijer, 2006 Banhidy, 2008 Lind, 2013 Weller, 2017
5
1.42
[
0.93
; 2.17]
5,360
2,181
not evaluable
Major congenital malformations
Banhidy, 2008 Weller, 2017 Nehard, 2024
3
1.13
[
0.95
; 1.34]
28,953
2,286
not evaluable
Spina bifida
Wu, 2006 Reefhuis, 2011
2
2.80
[
0.20
; 38.54]
706
138
not evaluable
Congenital heart defects
Banhidy, 2008
1
1.30
[
0.60
; 2.81]
4,479
110
not evaluable
Craniosynostosis
Reefhuis, 2003 Reefhuis, 2011 Weller, 2017
3
2.04
[
1.34
; 3.11]
901
2,001
not evaluable
Cleft lip with or without cleft palate
Banhidy, 2008 Reefhuis, 2011
2
1.20
[
0.75
; 1.91]
3,072
219
not evaluable
Encephalocele
Reefhuis, 2011
1
2.70
[
0.93
; 7.85]
133
98
not evaluable
Minor congenital malformations
Nehard, 2024
1
4.44
[
1.81
; 10.91]
20
262
not evaluable
Nervous system anomalies
Weller, 2017
1
0.92
[
0.51
; 1.66]
839
1,861
not evaluable
Ventricular septal defect
Reefhuis, 2011 Weller, 2017
2
1.40
[
0.81
; 2.42]
1,380
1,986
not evaluable
Ano-rectal atresia and stenosis
Reefhuis, 2011
1
1.20
[
0.61
; 2.35]
592
104
not evaluable
Anotia
Reefhuis, 2011
1
2.10
[
0.97
; 4.55]
383
101
not evaluable
Cleft palate
Reefhuis, 2011
1
0.80
[
0.41
; 1.55]
883
102
not evaluable
Club foot / Talipes equinovarus
Banhidy, 2008
1
1.20
[
0.39
; 3.65]
2,424
102
not evaluable
Digestive system anomalies
Weller, 2017
1
1.41
[
0.63
; 3.14]
309
1,861
not evaluable
Hydrocephaly
Reefhuis, 2011
1
1.10
[
0.42
; 2.91]
290
99
not evaluable
Oesophageal atresia with or without tracheo-oesophageal fistula
Reefhuis, 2011 Weller, 2017
2
2.41
[
1.41
; 4.11]
414
1,971
not evaluable
Polydactyly
Banhidy, 2008
1
0.46
[
0.11
; 1.85]
1,744
98
not evaluable
Atresia of bile ducts
Reefhuis, 2011
1
1.40
[
0.32
; 6.16]
105
97
not evaluable
Atresia or stenosis of other parts of small intestine
Reefhuis, 2011
1
1.40
[
0.51
; 3.86]
257
98
not evaluable
Atrial septal defect
Reefhuis, 2011
1
1.50
[
0.99
; 2.27]
1,934
133
not evaluable
Atrioventricular septal defect
Reefhuis, 2011
1
1.10
[
0.32
; 3.76]
170
97
not evaluable
Cardiac septal defects
Reefhuis, 2011
1
1.60
[
1.13
; 2.26]
3,320
168
not evaluable
Choanal atresia
Reefhuis, 2011
1
2.70
[
0.92
; 7.95]
82
98
not evaluable
Coarctation of aorta
Reefhuis, 2011
1
1.80
[
1.09
; 2.97]
603
114
not evaluable
Congenital cataract
Reefhuis, 2011
1
1.30
[
0.50
; 3.39]
208
80
not evaluable
Congenital constriction bands/amniotic band
Reefhuis, 2011
1
1.40
[
0.41
; 4.75]
200
97
not evaluable
Diaphragmatic hernia
Reefhuis, 2011
1
1.20
[
0.60
; 2.40]
488
103
not evaluable
Hypoplastic left heart (HLH/HLHS)
Reefhuis, 2011
1
1.30
[
0.60
; 2.81]
343
102
not evaluable
Omphalocele
Reefhuis, 2011
1
2.20
[
1.09
; 4.45]
254
103
not evaluable
Pulmonary valve stenosis
Reefhuis, 2011
1
1.30
[
0.73
; 2.30]
829
109
not evaluable
Tetralogy of Fallot
Reefhuis, 2011
1
1.10
[
0.59
; 2.06]
630
105
not evaluable
Transposition of the great vessels
Reefhuis, 2011
1
0.40
[
0.11
; 1.50]
443
97
not evaluable
Growth parameters and prematurity
Preterm (< 37 weeks)
Malchau, 2014 Nehard, 2024
2
1.28
[
0.83
; 1.96]
107
1,598
not evaluable
Low birth weight (< 2500g)
Malchau, 2014 Nehard, 2024
2
1.43
[
1.08
; 1.91]
90
1,593
not evaluable
Macrosomia (> 4000g)
Nehard, 2024
1
0.93
[
0.68
; 1.27]
362
236
not evaluable
Small for gestational age (weight)
Malchau, 2014 Gorgui, 2022
2
1.39
[
1.05
; 1.83]
5,398
1,659
not evaluable
Long term consequences
Neuroblastoma
Olshan, 1999
1
0.50
[
0.20
; 1.22]
459
21
not evaluable
Intrauterine deaths
Early intrauterine death (< 22 weeks)
Nehard, 2024
1
1.82
[
1.16
; 2.85]
99
309
not evaluable
Ectopic pregnancy
Nehard, 2024
1
4.02
[
0.56
; 28.65]
4
309
not evaluable
Elective/induced termination of pregnancy
Nehard, 2024
1
0.74
[
0.43
; 1.28]
101
309
not evaluable
Late intrauterine deaths (> 22 weeks)
Nehard, 2024
1
0.57
[
0.07
; 4.65]
8
309
not evaluable
Therapeutic terminations of pregnancy
Nehard, 2024
1
1.20
[
0.33
; 4.39]
13
309
not evaluable
0.0
50.0
1.0