From the maternal outcome, maternal near miss ratio, severe maternal outcome ratio, maternal mortality ratio, maternal near miss: mortality ratio, and mortality index were calculated [ 12].
The mortality index was calculated by dividing the number of maternal deaths by the sum of MNM events and maternal deaths [ 25].
Also, mortality index was calculated, where the number of maternal deaths was divided by the number of women with life-threatening conditions (maternal near miss and maternal deaths) and was expressed as a percentage.
For mortality prediction, cutoff values for lactates, lactate clearance, and SvcO2 were chosen to correspond to the best respective Youden's index calculated as follows: Youden's index = sensitivity + specificity −1.
Anthropometric measures were taken and body mass index calculated.
Using Hospital Episode Statistics linked to mortality data from the Office for National Statistics the Summary Hospital-Level Mortality Index (SHMI) was calculated for all patients who were discharged or died in general acute hospital trusts in England for the period 01/04/2005 to 30/09/2010.
For each obstetric condition, we calculated the mortality index to determine the standard of care provided for each disease process.
In order to evaluate the standard of care provided for each disease category, we calculated the mortality index for each obstetric condition.
Near-miss cases and events (hemorrhage, infection, hypertensive disorders, anemia and dystocia), maternal deaths and their causes were retrospectively reviewed and the mortality index for each event was calculated in Kassala Hospital, eastern Sudan over a 2-year period, from January 2008 to December 2010.
Thus, the present study was conducted to investigate the frequency of near-miss events, to calculate the mortality index for each event and to compare the socio-demographic data (age, parity, gestational age, education and antenatal care) of the near-miss cases with maternal deaths.
