Table 1

Characteristics of the 865 participants (Means and standard deviations or numbers and (percentages)).

Characteristic

Mean (sd) or Number (%)

Age Mean (sd)

28.0 (5.5)

Age group

≤ 20

74 (8.6)

21–34

680 (78.6)

≥ 35

111 (12.8)

Parity

0

447 (51.7)

1–3

402 (46.5)

≥ 4

16 (1.8)

Model of care (booking)

Traditional + midwifery antenatal care

461 (53.3)

Birth Centre

185 (21.4)

GP Shared Care

219 (25.3)

Smoking at booking

185 (21.4%)

GBS bacteriuria at booking

Positive (4% of all with known values)

30 (3.5%)

Unknown

117 (13.5%)

History of GBS among women with parity 1+ (n = 418)

Positive in previous pregnancy (27.3% of known)

55 (13.2)

Unknown

184 (44%)

History of neonatal GBS sepsis n = 418

1 (0.2)

Unknown

26 (36.2)

History of

Preterm birth

32 (7.7)

Preterm prelabour rupture of membranes

12 (2.9)

Sociodemographic characteristics

Race

Caucasian

818 (94.6)

Aboriginal/Torres Strait Islander

8 (0.9)

Asian

35 (4.0)

Other

4 (0.5)

Education

School student

5 (0.6)

Left school aged < 16

55 (6.4)

Left school aged ≥ 16

369 (42.7)

Trade qualification

36 (4.2)

Certificate or Diploma

241 (27.9)

Bachelors Degree or higher

159 (18.4)

Hiller et al. BMC Pregnancy and Childbirth 2005 5:12   doi:10.1186/1471-2393-5-12