Progesterone Receptor (PGR) gene polymorphism is associated with susceptibility to preterm birth

BMC Medical Genetics

Table 1 Demographic features of 532 term and 135 preterm subjects

Characteristics	Term	Preterm	p value
Maternal age	29.3 ± 3.7	29.8 ± 3.0	0.23
Maternal BMI (kg/m2)	24.5 ± 5.4	24.3 ± 5.1	0.69
Married subjects (%)	98	98	0.72
Gestational diabetes (%)	0	11	0.000
History of PTB (%)	0	14	0.000
Previous miscarriage (%)	15	25	0.011
Low income (%)	2	3
Average income (%)	33	35	0.561
High income (%)	65	62

Data are express as mean ± SD for continuous data and as percentage for categorical data
p values were obtained using Mann–Whitney U test or independent t test
P-values <0.05 were considered significant

ISSN: 1471-2350