Table 2 Relative mortality rates according to age at transfer

1–5 months

1.09 (1.00–1.19)

1.12 (1.02–1.23)

0.93 (0.70–1.23)

1.03 (0.68–1.57)

6–11 months

1.19 (1.08–1.32)

1.19 (1.06–1.32)

1.05 (0.76–1.44)

1.23 (0.77–1.97)

12–23 months

1.14 (1.03–1.26)

1.11 (1.00–1.25)

1.07 (0.77–1.49)

1.26 (0.77–2.05)

2–3 years

1.12 (1.00–1.26)

1.02 (0.90–1.16)

1.09 (0.76–1.57)

1.44 (0.85–2.44)

4–7 years

1.05 (0.89–1.24)

0.83 (0.69–1.00)

1.88 (1.19–2.96)

2.63 (1.38–5.01)

Overall effect

0.02

0.001

0.08

0.06

Test for trend^a

–

–

0.006

0.003