. 2015 Apr 19;15:406. doi: 10.1186/s12889-015-1737-y

Table 1.

Maternal and prenatal characteristics according to the public maternity

Maternal and prenatal characteristics	Maternity/City
	A		B
	Niterói		Rio de Janeiro
	n	%	n	%	p-value
Age group (years)^a					0.02
10 – 19	142	30.9	292	24.9	-
20 – 34	279	60.8	769	65.4	-
≥35	38	8.3	114	9.7	-
Partner^b					0.49
Absence	131	28.8	351	30.5	-
Presence	324	71.2	798	69.5	-
Skin color^b					0.33
White	121	26.8	323	28.6	-
Brown	212	47.0	550	48.7	-
Black	118	26.2	256	22.7	-
Maternal Education Level (years of study)^a					0.01
≤4	13	2.9	34	2.9	-
5-7	152	33.4	299	25.5	-
8-11	277	60.9	791	67,4	-
≥12	13	2.9	50	4.3	-
Family income per month (USD)^a					0.06
<$88.47	96	23.2	228	20.9	-
$88.47 to $331.47	271	65.6	694	63.7	-
≥$331.47	46	11.1	167	15.3	-
Parity^b					0.67
primiparous	185	40.3	487	41.4	-
multiparous	274	59.6	688	58.6	-
Adequacy of prenatal care^a					0.10
Inadequate	148	35.7	411	37.9	-
Intermediate	168	40.5	465	42.9	-
Adequate	83	20.0	194	17.9	-
More than adequate	16	3.9	15	1.4	-

^aMann-Whitney test; ^bPearson’s chi-squared.

Note: The sums of the frequencies of the categories for each variable are not equal due to exclusion of records with missing information or information ignored in the analysis.