Table 3

Frequencies of perinatal outcomes among all babies born to Aboriginal or Torres Strait Islander mothers by maternal smoking status

NSW population
14
All birthsNon-smokingSmokingUnadjustedAdjusted*PAF (%)
n=18 154Nns=9235Ns=8919RR (95% CI)RR (95% CI)
%n%n%n%
Preterm birth (<37 weeks)
Yes82045117608.21285140.59
(0.54 to 0.64)
0.58
(0.53 to 0.64)
26
Total18 15410092351008919100
Small for gestational age
(<3rd population percentile)
Yes38354.61832.06527.30.28
(0.23 to 0.32)
0.27
(0.23 to 0.32)
57
Total18 13210092291008903100
Small for gestational age
(<10th population percentile)
Yes102381136417.01740200.36
(0.33 to 0.39)
0.35
(0.32 to 0.39)
48
Total18 13210092291008903100
Severe neonatal morbidity Among live births only
Yes514708.26366.98349.50.74
(0.67 to 0.81)
0.70
(0.63 to 0.77)
17
Total17 97810091691008809100
Admission to SCN or NICU†
Yes153957221645182312260.70
(0.66 to 0.75)
0.66
(0.63 to 0.70)
20
Total17 80910090591008750100
Perinatal death Rate per 1000 total births
Yes8254149210‡16218‡0.54
(0.42 to 0.70)
0.58
(0.44 to 0.76)
27
Stillborn6162606.5‡10211‡0.57
(0.41 to 0.78)
0.60
(0.43 to 0.84)
20
Rate per 1000 live births
Neonatal death292323.5§606.8§0.50
(0.33 to 0.78)
0.54
(0.34 to 0.86)
30
  • *Adjusted for maternal age, any hypertension, any diabetes, parity and socioeconomic status (Socio-Economic Index for Areas (SEIFA)).

  • †Admission to Special Care Nursery (SCN) or Neonatal Intensive Care Unit (NICU) was restricted to those babies recorded as being born in a hospital of maternity service level 3 or higher or a private hospital.

  • ‡Rate per 1000 total births.

  • §Rate per 1000 live births.

  • PAF, Population Attributable Fraction; RR, relative risk.