Table 1.

Maternal and fetal chromosomal characteristics of miscarriages with or without embryonic poles

	With embryo, n = 143	Without embryo, n = 80	P value
Maternal age (mean ± SD)	32.7 ± 5.1	32.0 ± 5.3	0.34
Gestational weeks (mean ± SD)	8.9 ± 1.9	8.4 ± 1.6	0.07
Maternal age≧34 y/o	60 (42.0 %)	29 (36.3 %)	0.40
> 1 miscarriage	45 (31.5 %)	25 (31.3 %)	0.97
Normal karyotype	55 (38.5 %)	43 (53.8 %)	0.03
Abnormal karyotype	88 (61.5 %)	37 (46.3 %)	0.03

Student’s t-tests and chi-squared tests, with P value < 0.05 considered statistically significant