Adverse Outcomes of IVF/ICSI Pregnancies Vary Depending on Aetiology of Infertility
Table 2
Neonatal outcomes in the study groups compared with the reference group.
Outcome β
Ref. group 26 870
ART 255
Anovulation 68
Endometriosis 49
Male factor 43
Tubal factor 38
PCOS 27
Unexplained 30
Preterm birth
ββ%
6.3
12.7
13.4
18.6
9.8
10.5
14.8
6.7
β-value
<0.0001
<0.05
<0.005
NS
NS
NS
NS
βOR
2.17
2.33
3.43
1.62
1.77
2.61
1.07
β95% CI
1.48β3.17
1.15β4.71
1.59β7.42
0.58β4.53
0.63β4.99
0.90β7.57
0.26β4.51
βAOR
2.12
2.07
3.25
1.80
1.71
2.85
1.06
β95% CI
1.44β3.11
1.01β4.23
1.50β7.07
0.64β5.11
0.60β4.85
0.98β8.30
0.25β4.48
LBW
ββ%
4.7
8.7
7.4
10.2
9.3
10.5
3.7
10.0
β-value
<0.005
NS
NS
NS
NS
NS
NS
βOR
1.93
1.62
2.32
2.09
2.40
0.79
2.27
β95% CI
1.24β3.00
0.65β4.04
0.92β5.86
0.75β5.87
0.85β6.79
0.11β5.79
0.69β7.49
βAOR
1.83
1.35
2.13
2.27
2.33
0.87
2.18
β95% CI
1.17β2.86
0.54β3.40
0.84β5.41
0.80β6.42
0.82β6.63
0.12β6.49
0.65β7.24
SGA
ββ%
9.7
12.4
11.8
6.3
19.1
7.9
7.4
23.3
β-value
NS
NS
NS
NS
NS
NS
<0.05
βOR
1.30
1.24
0.62
2.18
0.80
0.74
2.83
β95% CI
0.90β1.90
0.59β2.59
0.19β1.20
1.01β4.72
0.24β2.59
0.18β3.14
1.21β6.59
βAOR
1.08
1.02
0.49
1.78
0.69
0.78
2.29
β95% CI
0.73β1.59
0.49β2.16
0.15β1.59
0.78β4.06
0.21β2.25
0.18β3.33
0.97β5.41
NICU admiss
ββ%
9.5
16.6
14.7
18.4
20.9
15.8
18.5
10.0
β-value
<0.0005
NS
<0.05
<0.05
NS
NS
NS
βOR
1.87
1.64
2.14
2.51
1.78
2.16
1.05
β95% CI
1.34β2.60
0.84β3.21
1.04β4.01
1.20β5.24
0.74β4.26
0.82β5.70
0.32β3.48
βAOR
1.64
1.32
1.78
2.49
1.62
1.98
0.92
β95% CI
1.17β2.30
0.67β2.60
0.86β3.68
1.18β5.26
0.67β3.90
0.74β5.28
0.28β3.05
Preterm birth <37 gestational weeks, LBW: low birth weight (<2500βg), SGA: small for gestational age (fetal indexes < the 10th percentile adjusted for Finnish population), NICU: neonatal intensive care unit. AOR: OR adjusted for age, parity, BMI, smoking, previous foetal deaths and miscarriages, chronic illness, and marital status.