Factors predisposing to adverse pregnancy outcomes are analysed on the basis of 1,500 clinical records of maternity check-ups between January 1, 1980, and December 31, 1981, at National Medical Center, Seoul.
Risk factors are divided into two categories, the historical episodes and the clinical signs.
1. Analysis of the distribution of risk factors showed that the criteria to be used for defining the risky factors could be summarized as follows;
1) Risk factors in maternity history
(1) Still birth (one or more)
(2) Neonatal death (one or more)
(3) Spontaneous abortion (one or more
(4) Induced abortion (two or more)
(5) Premature delivery (one or more)
(6) Overweighted newborn (one or more)
(7) Cesarean section (one or more)
(8) Newborn´s developmental problem (one or more cases)
(9) Post-partum problem (once or more)
(10) Pre-eclampsia (once or more)
2) Risky clinical signs
(1) Edema (generalized case)
(2) Blood pressure (140/95 mmHg. or higher)
(3) Hemoglobin (less than 10 gm/dl)
(4) Rh type (negative).
(5) Urine protein (positive)
2. The effect of risk factors on the maternity outcomes.
The amount of the influence of risk factors on the maternity outcomes was assess-ed in terms of statistical significance test on the difference between the incidence rates of adverse outcomes of those with one or more positive risky factors and that of those without any such factors.
The maternity outcomes which showed statistically significance difference in the incidence rate between with and without risk factor groups are as follows.
1) The outcomes related to both historical and clinical signs
(1) Intrapartum complication
(2) Bleeding, placenta previa
(3) Induced delivery
(4) Nature of delivery
(5) Apgar score (at 10 minutes)
(6) Neonatal Health problem
(7) Post-partum problem
2) The outcomes related only to risky clnical signs
(1) Prolonged labor
(2) Abnormal presentation at delivery
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