Table 1.

General characteristics of the studied population (mean ± SD).

Parameters	Group A	Group B	Group C	p value
Number of women	41	49	48	—
Age [years]	28 ± 6	30 ± 7	29 ± 6	NS
Gestational age [weeks]	31 ± 3	31 ± 4	39 ± 1	p = 0,0001
Parity	2 ± 1	2 ± 1	2 ± 1	NS