|
Chapter X
|
Chapter XI
|
Chapter XII
|
Chapter XIII
|
Chapter XIV
|
Chapter XVI
|
Chapter XVII
|
Chapter XVIII
|
Chapter XIX
|
---|
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
aOR (95% CI)
|
---|
Maternal age
|
<=39 years
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
>=40 years
|
0.87 (0.82-0.92)
|
0.96 (0.88-1.05)
|
0.97 (0.89-1.06)
|
1.10 (0.95-1.27)
|
1.02 (0.90-1.16)
|
1.15 (1.04-1.28)
|
1.16 (1.05-1.27)
|
0.96 (0.89-1.02)
|
0.90 (0.84-0.96)
|
Civil status
|
Married/ cohabiting
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Single status at registration
|
0.98 (0.88-1.08)
|
1.09 (0.94-1.27)
|
1.04 (0.90-1.21)
|
0.86 (0.66-1.12)
|
0.85 (0.68-1.06)
|
1.12 (0.94-1.33)
|
1.14 (0.97-1.33)
|
1.15 (1.03-1.29)
|
1.02 (0.91-1.12)
|
Assisted reproductive technologyb
|
No
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Yes
|
1.16 (1.02-1.31)
|
1.33 (1.12-1.58)
|
1.15 (0.96-1.37)
|
1.05 (0.78-1.42)
|
1.16 (0.90-1.49)
|
1.02 (0.83-1.25)
|
1.14 (0.94-1.38)
|
1.27 (1.11-1.46)
|
0.98 (0.85-1.12)
|
Gender
|
Boy
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Girl
|
0.67 (0.63-0.70)
|
0.85 (0.79-0.93)
|
0.85 (0.78-0.92)
|
0.78 (0.68-0.90)
|
0.80 (0.72-0.90)
|
0.81 (0.73-0.89)
|
0.68 (0.62-0.75)
|
0.83 (0.78-0.88)
|
0.80 (0.75-0.85)
|
Size for gestational age
|
Average for gestational age
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Small for gestational age
|
0.96 (0.79-1.18)
|
1.22 (0.93-1.60)
|
0.68 (0.48-0.96)
|
0.79 (0.47-1.32)
|
0.69 (0.45-1.09)
|
1.67 (1.28-2.17)
|
1.22 (0.92-1.62)
|
1.17 (0.95-1.45)
|
0.90 (0.72-1.13)
|
Gestational age
|
Born at term
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Born pretermc
|
1.44 (1.25-1.66)
|
1.46 (1.20-1.77)
|
1.00 (0.80-1.24)
|
1.16 (0.83-1.63)
|
1.33 (1.00-1.76)
|
7.95 (6.80-9.30)
|
1.64 (1.34-2.00)
|
1.24 (1.06-1.44)
|
0.97 (0.82-1.14)
|
Birthweight
|
Normal
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Low birthweightd
|
1.31 (1.09-1.57)
|
1.20 (0.94-1.53)
|
0.92 (0.70-1.22)
|
1.23 (0.81-1.87)
|
1.30 (0.92-1.84)
|
3.74 (3.06-4.57)
|
1.43 (1.12-1.84)
|
1.35 (1.12-1.64)
|
1.12 (0.92-1.37)
|
Nicotine use during pregnancy
|
No
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Yes
|
1.28 (1.16-1.40)
|
1.14 (1.00-1.31)
|
0.94 (0.82-1.08)
|
1.20 (0.97-1.50)
|
1.07 (0.89-1.30)
|
0.97 (0.82-1.14)
|
1.18 (1.02-1.37)
|
1.19 (1.18-1.45)
|
0.99 (0.89-1.10)
|
Educational level
|
Elementary
|
1.34 (1.22-1.46)
|
1.16 (1.01-1.32)
|
1.26 (1.11-1.44)
|
1.16 (0.93-1.45)
|
1.56 (1.30-1.87)
|
1.12 (0.95-1.32)
|
1.11 (0.96-1.29)
|
1.31 (1.18-1.45)
|
1.03 (0.93-1.14)
|
High school
|
1.08 (1.02-1.15)
|
1.04 (0.95-1.13)
|
1.09 (1.00-1.19)
|
1.07 (0.93-1.24)
|
1.20 (1.06-1.37)
|
1.14 (1.03-1.27)
|
1.10 (1.00-1.21)
|
1.14 (1.07-1.22)
|
0.96 (0.90-1.03)
|
College/ University
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
Reference
|
- Adjusted for all variables presented in the table
- a Adjusted for all variables presented in the table. Statistically significant ORs are presented in bold text
- b Assisted reproductive technology (ART): ovulation induction, in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) with own or donated gametes, embryo donation
- c Born preterm (PT): born at <37 weeks’ gestation
- d Low birth weight (LBW): birth weight <2500 g