Table 4.

Pregnancy outcomes

Outcome	AP group N(%)	NP group N(%)	P value
Spontaneous miscarriage	63 (30.14)	50 (6.46)	< 0.001
Vanishing twin syndrome	26 (12.44)	36 (4.65)	< 0.001
Still birth	2 (0.96)	4 (0.52)	0.61
Preterm labor(< 34 week)	35 (16.75)	162 (20.93)	0.26
Fetal distress	3 (1.43)	8 (1.03)	0.72
Preeclampsia	8 (3.82)	46 (5.94)	0.33
Postpartum hemorrhage	9 (4.31)	58 (7.49)	0.10
Low birth weight (one of twin)	20 (9.57)	114 (14.75)	0.35
Low birth weight (both of twin)	16 (7.78)	90 (11.63)	0.56

AP Adverse pregnancy group, NP Normal pregnancy group. Values are the mean and standard deviation or number (percentage) unless otherwise indicated. P values were determined with the chi-square test for categorical variables or Student’s t test for continuous variables. P < 0.05 indicates statistical significance