Figure: Association between gestational age at birth and school attainment at Key Stage 1 and Key Stage 2. Reproduced from Libuy et al.
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| Relative Risk |
Lower CI |
Upper CI |
Week |
Key stage |
| 5 |
3.6800001 |
6.7800002 |
24 |
1 |
| 2.6700001 |
1.88 |
3.77 |
25 |
1 |
| 2.8299999 |
2.22 |
3.5999999 |
26 |
1 |
| 2.3900001 |
1.92 |
2.96 |
27 |
1 |
| 2.47 |
2.0699999 |
2.96 |
28 |
1 |
| 2.03 |
1.67 |
2.47 |
29 |
1 |
| 1.71 |
1.41 |
2.0799999 |
30 |
1 |
| 1.9299999 |
1.62 |
2.3 |
31 |
1 |
| 1.59 |
1.36 |
1.85 |
32 |
1 |
| 1.62 |
1.42 |
1.84 |
33 |
1 |
| 1.36 |
1.21 |
1.51 |
34 |
1 |
| 1.25 |
1.14 |
1.38 |
35 |
1 |
| 1.4400001 |
1.36 |
1.54 |
36 |
1 |
| 1.24 |
1.1799999 |
1.3099999 |
37 |
1 |
| 1.14 |
1.1 |
1.1799999 |
38 |
1 |
| 1.05 |
1.02 |
1.09 |
39 |
1 |
| 1 |
1 |
1 |
40 |
1 |
| 1.01 |
0.98000002 |
1.05 |
41 |
1 |
| 1.1 |
1.03 |
1.17 |
42 |
1 |
| 1.05 |
0.86000001 |
1.28 |
43 |
1 |
| 1.26 |
1.04 |
1.53 |
24 |
2 |
| 1.5599999 |
1.29 |
1.9 |
25 |
2 |
| 1.4 |
1.1900001 |
1.64 |
26 |
2 |
| 1.15 |
1 |
1.3200001 |
27 |
2 |
| 1.22 |
1.09 |
1.37 |
28 |
2 |
| 1.29 |
1.14 |
1.46 |
29 |
2 |
| 1.26 |
1.13 |
1.41 |
30 |
2 |
| 1.22 |
1.09 |
1.36 |
31 |
2 |
| 1.15 |
1.05 |
1.26 |
32 |
2 |
| 1.21 |
1.12 |
1.3 |
33 |
2 |
| 1.13 |
1.0700001 |
1.21 |
34 |
2 |
| 1.12 |
1.0599999 |
1.1799999 |
35 |
2 |
| 1.11 |
1.0700001 |
1.15 |
36 |
2 |
| 1.08 |
1.05 |
1.11 |
37 |
2 |
| 1.0599999 |
1.04 |
1.08 |
38 |
2 |
| 1.03 |
1.01 |
1.05 |
39 |
2 |
| 1 |
1 |
1 |
40 |
2 |
| 1.01 |
0.99000001 |
1.03 |
41 |
2 |
| 1.02 |
0.99000001 |
1.0599999 |
42 |
2 |
| 1.08 |
0.98000002 |
1.1900001 |
43 |
2 |
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