TABLE 1

Comparison of demographic details of the two cohorts, 2004–2006 and 2008–2010

2004–20062008–2010p-value
Subjects1644
Birthweight g720 (480–1000)755 (410–1300)0.564#
Gestation weeks25 (23–29)26 (23–29)0.358#
Male10 (62.5)23 (52.3)0.481

Data are presented as n, median (range) or n (%), unless otherwise stated. #: Mann–Whitney U-test; : Chi-squared.