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Table 5 Associationsa between maternal and birth characteristics and chapter specific morbidity of diagnosis received in specialist in- and outpatient care

From: Maternal advanced age, single parenthood, and ART increase the risk of child morbidity up to five years of age

  Chapter I Chapter II Chapter III Chapter IV Chapter V Chapter VI Chapter VII Chapter VIII Chapter IX
  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 0.96 (0.90-1.03) 1.02 (0.78-1.33) 1.12 (0.85-1.47) 0.84 (0.71-1.00) 1.11 (0.94-1.31) 0.92 (0.76-1.13) 1.04 (0.94-1.14) 0.90 (0.84-0.97) 1.03 (0.74.1.43)
Civil status
 Married/ cohabiting Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Single status at registration 1.18 (1.06-1.31) 1.25 (0.82-1.91) 1.07 (0.67-1.71) 0.99 (0.73-1.33) 1.33 (1.01-1.74) 1.03 (0.74-1.44) 1.06 (0.90-1.24) 1.02 (0.90-1.15) 1.01 (0.57-1.80)
Assisted reproduction technologyb
 No Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Yes 1.31 (1.15-1.50) 1.37 (0.84-2.24) 1.51 (0.93-2.45) 1.13 (0.80-1.59) 1.27 (0.92-1.75) 0.86 (0.56-1.33) 1.14 (0.94-1.39) 1.14 (0.99-1.33) 0.88 (0.43-1.82)
Gender
 Boy Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Girl 0.90 (0.85-0.95) 0.86 (0.67-1.10) 0.78 (0.60-1.01) 0.80 (0.68-0.93) 1.06 (0.90-1.24) 0.81 (0.68-0.98) 1.00 (0.91-1.09) 0.74 (0.69-0.79) 0.68 (0.49-0.93)
Size for gestational age
 Average for gestational age Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Small for gestational age 1.23 (1.00-1.52) 1.52 (0.73-3.18) 1.70 (0.83-3.47) 2.02 (1.31-3.12) 1.37 (0.84-2.25) 0.96 (0.56-1.65) 1.18 (0.89-1.56) 0.89 (0.70-1.14) 1.83 (0.82-4.11)
Gestational age
 Born at term Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Born pretermc 1.29 (1.11-1.50) 2.04 (1.23-3.38) 2.00 (1.19-3.39) 2.07 (1.50-2.86) 1.51 (1.05-2.16) 2.09 (1.44-3.02) 1.56 (1.27-1.92) 1.26 (1.06-1.48) 0.88 (0.41-1.90)
Birthweight
 Normal Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Low birth weightd 1.09 (0.90-1.32) 0.88 (0.45-1.72) 1.06 (0.54-2.07) 0.86 (0.56-1.32) 1.12 (0.71-1.75) 1.92 (1.24-2.97) 1.71 (1.34-2.19) 1.17 (0.95-1.44) 2.07 (0.90-4.81))
Nicotine use during pregnancy
 No Reference Reference Reference Reference Reference Reference Reference Reference Reference
 Yes 1.16 (1.05-1.28) 0.94 (0.62-1.44) 0.88 (0.56-1.39) 0.92 (0.70-1.20) 0.92 (0.69-1.21) 1.34 (1.01-1.77) 1.42 (1.23-1.63) 1.32 (1.18-1.46) 1.01 (0.60-1.71)
Educational level
 Elementary 1.47 (1.34-1.62) 1.30 (0.88-1.92) 1.33 (0.89-1.98) 1.21 (0.93-1.56) 0.91 (0.69-1.20) 1.15 (0.86-1.54) 1.19 (1.03-1.38) 1.32 (1.19-1.48) 1.02 (0.62-1.69)
 High school 1.11 (1.04-1.18) 0.99 (0.75-1.30) 0.88 (0.66-1.18) 1.07 (0.90-1.27) 0.91 (0.77-1.08) 0.98 (0.80-1.20) 1.02 (0.92-1.13) 1.13 (1.05-1.21) 0.86 (0.61-1.21)
 College/
University
Reference Reference Reference Reference Reference Reference Reference Reference Reference
  1. a Adjusted for all variables presented in the table. Statistically significant ORs are presented in bold text
  2. b Assisted reproductive technology (ART): ovulation induction, in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) with own or donated gametes, embryo donation
  3. c Born preterm (PT): born at <37 weeks’ gestation
  4. d Low birth weight (LBW): birth weight <2500 g