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. 2011 Feb;100(2):188–192. doi: 10.1111/j.1651-2227.2010.02001.x

Table 2.

Demographics of the studied population

A B


Centres Period (n) Period 1 (138) Period 2 (113) Period 3 (65) Period 1 (83) Period 2 (115) Period 3 (57)
Gestational weeks 27 ± 2 27 ± 2.3 27 ± 1.6 26.8 ± 2.1 26.8 ± 2.2 27 ± 2.4
Birth Weight (g) 922.8 ± 190 914 ± 208 907 ± 183 889.6 ± 203 866 ± 198 897 ± 206
Antenatal Steroids 78% 79% 80% 64% 77% 81%
Female 56% 51% 53% 55% 53% 52%
Mechanical Ventilation 92% 83% 86% 85% 81% 83%
Small for gestation 21% 21% 20% 21% 23% 21%

No significant statistical significance was identified for any variable.