Adequacy of antenatal care and its relationship with low birth weight in Botucatu, São Paulo, Brazil: a case-control study

Table 3 Content and procedures of antenatal care by group

ANC procedures	Case group				Control group				p
	(<2500 g)				(≥2500 g)
	Mean		SD	Range	Mean	SD	Range
Number of ANC visits	16.9		6.9	2–41	18	6.9	4 - 44		0.001
Number of gestational weeks at the first ANC visit¹	13.5		6.2	4 - 36.4	13.6	8.2	1.6-33.6		0.810
Number of ANC visits	N = 511		%		N=538		%		p
Adequate	351		68.7		433		80.5		< 0.001
Initiation of ANC¹	≤ 17 weeks		> 17weeks		≤ 17 weeks		≤ 17 weeks		p
	N	%	N	%	N	%	N	%	0.85
	370	77.1	110	22.9	399	76.4	123	23.6	0.85
Laboratory studies and exams	N= 511²		%		N= 538²		%		p
Adequate	272		94.4		281		98.6		0.007

Source: Records of pregnant women in Primary Health Care Units and Clinics Hospital.
¹No information Case group 31 (6.1%); Control group 16 (2.9%).
²No Information Case group 223 (43.6%); Control group 253 (47.0%).

ISSN: 1471-2393