| |
EFHL study sample
|
Study populationa
|
Reference populationb
|
P-value
|
|---|
|
Infant Characteristics
|
N=2908
|
N=45,669
|
N=1,441,424
| |
|
Gender of infant
| | | | |
|
Males
|
1448 (50.5)
|
23,498 (51.5)
|
735,479 (51.4)
|
0.315 (Study)
|
|
Females
|
1420 (49.5)
|
22,170 (48.5)
|
694,495 (48.6)
|
0.312 (Reference)
|
|
Missing
|
40
|
1
|
11,450
| |
|
Plurality
| | | | |
|
Singleton
|
2850 (98.0)
|
44,568 (97.6)
|
1,395,372 (96.8)
|
0.173 (Study)
|
|
Multiple
|
58 (2.0)
|
1,101 (2.4)
|
46,052 (3.2)
|
<0.001 (Reference)
|
|
Missing
|
0
|
0
|
0
| |
|
Gestational age at birth
| | | | |
|
<28 weeks
|
0 (0.0)
|
273 (0.6)
|
12,881 (0.9)
|
<0.001 (Study)
|
|
28-36 weeks
|
95 (3.3)
|
2,912 (6.4)
|
105,235 (7.3)
|
<0.001 (Reference)
|
|
37-41 weeks
|
2734 (96.1)
|
42,227 (92.5)
|
1,308,933 (90.8)
| |
|
>41 weeks
|
17 (0.6)
|
245 (0.5)
|
13,761 (1.0)
| |
|
Missing
|
62
|
12
|
614
| |
|
Live births
| | | | |
|
Live
|
2904 (99.9)
|
45,368 (99.3)
|
1,430,500 (99.2)
|
0.001 (Study)
|
|
Still born
|
4 (0.1)
|
301 (0.7)
|
10,815 (0.8)
|
<0.001 (Reference)
|
|
Missing
|
0
|
0
|
109
| |
|
Birth weight
| | | | |
|
<2500g
|
76 (2.7)
|
2,484 (5.4)
|
97,524 (6.8)
|
<0.001 (Study)
|
|
2500-3999g
|
2319 (81.6)
|
37,287 (81.7)
|
1,170,968 (81.3)
|
<0.001 (Reference)
|
|
>4000
|
448 (15.7)
|
5,894 (12.9)
|
172,169 (11.9)
| |
|
Missing
|
65
|
4
|
763
| |
-
a Study population includes all births in the Logan, Beaudesert, Gold Coast and Northern Rivers Health Districts. Data sources: Queensland Perinatal Statistics 2006–2010; New South Wales Perinatal Statistics 2006–2010.
-
b Reference Population includes all births in Australia 2006–2010. Data sources: National Perinatal Statistics 2006–2010.
-
c Pearsons chi-squared.
