Data on blood loss were retrieved from the
maternity data collecting information system
for all women who delivered vaginally between
1 January 2008 and 1 September 2008, and for a
similar group of women between 1 January 2010
and 1 September 2010 irrespective of the possible
reason(s) for the PPH.
Information on blood loss and blood transfusion
requirements was entered into an Excel spreadsheet
and numerical and percentage calculations
for each of the periods were calculated. Categorical
data were compared using the Chi-square (χ2) or
Fisher’s exact test where appropriate. Continuous
variables between groups were compared using the
Student t-test or the Mann-Whitney U test where
appropriate. P < 0.05 was considered significant.