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Table 2 Characteristics of the participants

From: Aiming to increase birth weight: a randomised trial of pre-pregnancy information, advice and counselling in inner-urban Melbourne

  Intervention: N = 392 Comparison: N = 394
Maternal age N % N %
<20 10 2.6 18 4.6
20–24 81 20.9 70 17.9
25–29 127 32.4 144 36.9
30–34 135 34.2 129 33.1
35–39 36 9.2 27 6.9
≥ 40 0 - 2 0.5
Missing data 3 - 4 -
Region of birth (Mother)     
Australia 254 64.5 279 70.8
New Zealand/UK 23 5.9 13 3.3
Europe 28 7.1 24 6.1
Asia/Middle East 75 19.1 71 18.0
Africa 6 1.5 4 1.0
America 5 1.3 3 0.8
Missing data 1 - 0 -
Occupation (Father)     
Professional 16 4.1 14 3.6
Proprietor/Manager 24 6.1 15 3.8
Office and sales worker 89 22.7 111 28.2
Farmer 87 22.2 83 21.1
Skilled worker 60 15.3 53 13.5
Semiskilled worker 72 18.4 79 20.0
Unskilled worker 42 10.7 39 9.9
Missing data 2 - 0 -
Local Government area     
A 181 46.1 190 48.2
B 120 30.6 112 28.4
C 66 16.8 72 18.3
Other 25 5.6 20 5.1
Prior problems     
Infertility 31 7.9 36 9.1
Prior miscarriage ≥ 1 37 9.4 43 10.9
Prior termination ≥ 1 43 11.0 36 9.1
1st birth unplanned 105 26.8 115 29.2
1st birth unwanted 11 2.8 7 1.8
First birth     
Spontaneous vaginal* 180 46.1 206 52.3
Forceps 118 30.0 115 29.2
Vacuum 3 0.8 2 0.5
Elective caesarean 15 3.6 9 2.3
Emergency caesarean 48 12.3 40 10.2
Missing data 28 7.2 22 5.6
  1. * includes 4 vaginal breech births in each arm