Table 3.

Peripartum abnormalities in pregnant women at seismic intensity 5 according to gestational trimester at the time of the earthquake disaster

Peripartum abnormalities	Variable	The first trimester (<16 weeks of gestation)	The second trimester (16–27 weeks of gestationa)	The third trimester (≥28 weeks of gestation)	p value
		n (%)	n (%)	n (%)
Varicose veins	Yes	0 (0.0)	0 (0.0)	0 (0.0)	–
	No	28 (100.0)	17 (100.0)	3 (100.0)
Pregnancy-induced hypertension	Yes	3 (10.7)	2 (11.8)	0 (0.0)	0.83
	No	25 (89.3)	15 (88.2)	3 (100.0)
Premature rupture of membranes	Yes	1 (3.6)	0 (0.0)	0 (0.0)	0.69
	No	27 (96.4)	17 (100.0)	3 (100.0)
Infection (candida, chlamydia, Bacterial vaginosis)	Yes	9 (32.1)	4 (23.5)	0 (0.0)	0.45
	No	19 (67.9)	13 (76.5)	3 (100.0)
Infection (Group B Streptococcus)	Yes	2 (7.1)	2 (11.8)	0 (0.0)	0.75
	No	26 (92.9)	15 (88.2)	3 (100.0)
Chorioamnionitis	Yes	0 (0.0)	1 (5.9)	0 (0.0)	0.39
	No	28 (100.0)	16 (94.1)	3 (100.0)
Placental insufficiency	Yes	0 (0.0)	1 (5.9)	0 (0.0)	0.39
	No	28 (100.0)	16 (94.1)	3 (100.0)
Preterm birth	Yes	2 (7.1)	1 (5.9)	0 (0.0)	0.89
	No	26 (92.9)	16 (94.1)	3 (100.0)
Birth weight of infants	<2,500 g	2 (7.1)	0 (0.0)	0 (0.0)	0.48
	≥2,500 g	26 (92.9)	17 (100.0)	3 (100.0)
Atonic bleeding	Yes	1 (3.6)	1 (5.9)	0 (0.0)	0.87
	No	27 (96.4)	16 (94.1)	3 (100.0)
Mastitis	Yes	1 (3.6)	2 (11.89)	0 (0.0)	0.49
	No	27 (96.4)	15 (88.2)	3 (100.0)
Uterine subinvolution	Yes	2 (7.1)	0 (0.0)	1 (33.3)	0.09
	No	26 (92.9)	17 (100.0)	2 (66.7)

p Value by Chi-square test

^aThe interval covered 16 weeks 0 days through 27 weeks 6 days