From: Global report on preterm birth and stillbirth (1 of 7): definitions, description of the burden and opportunities to improve data
Gestational Age
(weeks)
Ilesa, Nigeria,
1996-2000
Pelotas, Brazil,
2004
Scotland,
1985-1994
34-36
48
15
11
32-33
156
61
33
<32
587
370
194
All preterm (<37)
179
66
41