Completeness and characterization of gestational syphilis and congenital syphilis records in Bahia, Brazil, 2007-2017

Soares, Maria Auxiliadora Santos; Aquino, Rosana

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Brasil

Epidemiologia e Serviços de Saúde

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Original Article • Epidemiol. Serv. Saúde 30 (4) • 2021 • https://doi.org/10.1590/S1679-49742021000400018 copy

Completeness and characterization of gestational syphilis and congenital syphilis records in Bahia, Brazil, 2007-2017^* * Article derived from the academic master’s degree entitled ‘Association between gestational syphilis and congenital syphilis incidence rates and prenatal coverage in the state of Bahia’, defended by Maria Auxiliadora Santos Soares at the Postgraduate Program in Public Health, Instituto de Saúde Coletiva, Universidade Federal da Bahia, in 2020.

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Objective

To describe the completeness and characteristics of reported gestational syphilis and congenital syphilis cases in the state of Bahia, Brazil, between 2007 and 2017.

Methods

This was an ecological study using data retrieved from the Notifiable Health Conditions Information System (SINAN). Incidence rates at the macro-regional and state levels and percentage completeness were calculated.

Results

15,050 gestational syphilis cases and 7,812 congenital syphilis cases were identified. The incidence rate varied from 1.3 to 15.1 cases in pregnant women/1,000 live births and from 0.5 to 6.7 cases in infants under 1 year old/1,000 live births. Completeness of ‘clinical classification’ of gestational syphilis varied from 58.2% to 67.2% in the periods studied.

Conclusion

The study showed an increase in incidence rates, flaws in report form completion and the need to implement routine information quality evaluation.

Keywords:
Syphilis, Congenital; Prenatal Care; Health Profile; Epidemiology, Descriptive; Health Information Systems

Variables	2007-2010		2011-2014		2015-2017		2007-2017
Variables	%	Degree of completeness^a	%	Degree of completeness^a	%	Degree of completeness^a	%	Degree of completeness^a
Gestational syphilis
Race/skin color	89.2	Regular	85	Regular	90.2	Good	88.2	Regular
Clinical classification	58.7	Poor	58.2	Poor	67.2	Poor	63.1	Poor
Age group	99.9	Excellent	100.0	Excellent	100.0	Excellent	99.9	Excellent
Congenital syphilis
Race/skin color	71.0	Regular	69.1	Poor	75	Regular	72.3	Regular
Age group	100.0	Excellent	100.0	Excellent	100.0	Excellent	100.0	Excellent
Sex	92.3	Good	86.2	Regular	93.9	Good	90.8	Good
Maternal schooling	69.8	Poor	57	Poor	64.2	Poor	62.1	Poor
Prenatal care	88.6	Regular	82.4	Regular	88.0	Regular	85.9	Regular
Time when maternal syphilis diagnosed	90.8	Good	88.9	Regular	93.5	Good	91.4	Good
Partner(s) treated	76.1	Regular	65.1	Poor	75.0	Regular	71.3	Regular
Final congenital syphilis classification	93.1	Good	92.1	Good	100.0	Excellent	96.2	Excellent
Progression	89.0	Regular	87.6	Regular	89.3	Regular	88.7	Regular

Variables	Gestational syphilis
	2007-2010		2011-2014		2015-2017
	n	%	n	%	n	%
Race/skin color
Black (black + brown)	1,160	87.2	4,227	91.2	6,658	91.1
Non-Black	171	12.8	408	8.8	652	8.9
Clinical classification
Primary	576	65.8	1.736	54.7	2,170	39.9
Secondary	156	17.8	354	11.2	468	8.5
Tertiary	49	5.6	464	14.6	1,233	22.7
Latent	94	10.8	619	19.5	1,572	28.9
Maternal age group (in years)
Under 9	-	0.0	2	0.0	2	0.0
10-14	35	2.3	88	1.6	107	1.3
15-19	298	20.0	1,370	25.1	1,942	24.0
20-39	1,117	75.0	3,868	70.9	5,874	72.5
40-59	40	2.7	128	2.4	177	2.2

Variables	Congenital syphilis
	2007-2010		2011-2014		2015-2017
	n	%	n	%	n	%
Race/skin color
Black (black + brown)	555	86.6	1,902	92.2	2,753	93.6
Non-Black	86	13.4	161	7.8	187	6.4
Age group of children with congenital syphilis
Up to 6 days	827	91.6	2,797	93.6	3,714	94.7
7-27 days	46	5.1	91	3.1	99	2.5
28 days to 1 year	26	2.9	93	3.1	98	2.5
2-12 years	4	0.4	6	0.2	11	0.3
Sex of children with congenital syphilis
Male	397	47.7	1,194	46.4	1,761	47.8
Female	436	52.3	1,381	53.6	1,922	52.2
Maternal schooling
No schooling	17	2.7	30	1.8	30	1.2
1^st to 4^th grade, complete or incomplete	201	31.9	401	23.5	443	17.6
5^th to 8^th grade, complete or incomplete	282	44.8	783	46.0	1,149	45.6
High school, complete or incomplete	123	19.5	472	27.7	842	33.5
Higher education, complete or incomplete	7	1.1	17	1.0	54	2.1
Prenatal care
Yes	606	75.8	1,947	79.1	2,950	85.5
No	194	24.2	515	20.9	501	14.5
Time when maternal syphilis diagnosed
During prenatal care	334	40.7	1,172	44.1	1,917	52.3
At childbirth/curettage	287	35.0	934	35.2	1,248	34.0
After childbirth	182	22.2	522	19.7	484	13.2
Diagnosis not performed	17	2.1	27	1.0	19	0.5
Partner(s) treated
Yes	161	23.4	492	25.3	511	17.4
No	526	76.6	1,452	74.7	2,431	82.6
Final congenital syphilis classification
Recent congenital syphilis	827	98.3	2,723	99.0	3,833	97.7
Late congenital syphilis	9	1.1	5	0.2	11	0.3
Syphilis stillbirth/miscarriage	5	0.6	23	0.8	78	2.0
Progression
Alive	767	95.8	2,479	95.8	3,347	97.7
Death due to congenital syphilis	26	3.2	88	3.4	54	1.6
Death due to other cause	8	1.0	20	0.8	25	0.7

Secretaria de Vigilância em Saúde e Ambiente - Ministério da Saúde do Brasil SRTVN Quadra 701, Via W5 Norte, Lote D, Edifício P0700, CEP: 70719-040, +55 61 3315-3464, Fax: +55 61 3315-3464 - Brasília - DF - Brazil
E-mail: ress.svs@gmail.com

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[1] Correspondence: Maria Auxiliadora Santos Soares - Rua Basílio da Gama, S/N, Canela, Salvador, BA, Brazil. CEP: 40110-040. E-mail: soaresmariaauxiliadora@gmail.com