| Sex |
3LB at birth |
IMR |
2LB and 1FD |
IMR |
1LB and 2FD |
IMR |
| combination |
3LB |
2LB |
1LB |
3D |
Total |
|
2LB |
1LB |
1D |
2D |
Total |
|
1LB |
1D |
Total |
|
| |
|
|
|
|
|
|
1FD |
1FD |
|
1FD |
|
|
2FD |
2FD |
|
|
| Like-sexed |
824 |
38 |
6 |
2 |
870 |
21.5 |
22 |
3 |
|
3 |
28 |
160.7 |
8 |
1 |
9 |
111.1 |
| Unlike-sexed |
1485 |
57 |
17 |
8 |
1567 |
23.2 |
52 |
2 |
|
4 |
58 |
86.2 |
10 |
1 |
11 |
90.9 |
| UK |
0 |
0 |
0 |
0 |
0 |
- |
22 |
0 |
|
0 |
22 |
- |
14 |
1 |
15 |
- |
| Total |
2309 |
95 |
23 |
10 |
2437 |
23.4 |
96 |
5 |
|
7 |
108 |
88.0 |
32 |
3 |
35 |
85.7 |
| Odds ratio |
2LB & 1FD vs. 3LB |
|
1LB & 2FD vs. 3LB |
|
|
|
|
|
|
|
|
|
| [95% CI] |
4.0 [2.5-6.6] |
|
3.9 [1.2-12.9] |
|
|
|
|
|
|
|
|
|
LB: Live Birth; D: Infant death; FD:Fetal Death; CI: Confidence Interval |
