Spatial analysis of fetal mortality from congenital syphilis in the municipality of Recife-PE-Brazil between 2007 and 2016

Ramos, Roberta de Souza Pereira da Silva; Carneiro, Gledsângela Ribeiro; Oliveira, André Luiz Sá de; Cunha, Tarcisio Neves da; Ramos, Vânia Pinheiro

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RESEARCH • Esc. Anna. Nery 26 • 2022 • https://doi.org/10.1590/2177-9465-EAN-2021-0013 copy

Spatial analysis of fetal mortality from congenital syphilis in the municipality of Recife-PE-Brazil between 2007 and 2016

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Objective

To analyze the spatial distribution of fetal mortality due to congenital syphilis among the neighborhoods of the city of Recife-PE.

Method

Ecological study, based on the epidemiological indicator fetal mortality rate due to congenital syphilis, aggregated at the neighborhood level, in two five-year periods: 2007 to 2011 and 2012 to 2016. The pattern of spatial autocorrelation was determined by the Moran Global and Local Indexes, with statistical significance lower than 5% and represented in BoxMap and MoranMap maps that indicated areas with high, low and epidemiological transition rates and clusters of greater epidemiological interest.

Results

It was reported 208 fetal deaths. The Moran Global Index showed a reasonable degree of positive spatial autocorrelation in the first five-year period (I = 0.351 and p-value = 0.01) and a weak degree in the second five-year period (I = 0.189 and p-value = 0.02). Sanitary Districts I and VII had the highest percentages of neighborhoods that formed the cluster of high rates of the indicator with 63.3% and 38.4% in the first and second five-year periods, respectively.

Conclusions and Implications for Practice

The spatial analysis pointed out the critical areas for the occurrence of the indicator, which could contribute to investment in priority areas for the prevention of vertical transmission of syphilis.

Keywords:
Spatial analysis; Congenital syphilis; Fetal mortality; Incidence; Vertical transmission

Box Map quadrants
Sanitary Districts	Q1 (High-High)		Q2 (Low-Low)		Q3 (High-Low)		Q4 (Low-High)
	2007-11	2012-16	2007-11	2012-16	2007-11	2012-16	2007-11	2012-16
District I	10 (90%)	2 (18.1%)	0	6 (54.5%)	0	1 (9%)	1 (9%)	2 (18.1%)
District II	11(61.1)	4 (22.2%)	3 (16.6%)	8 (44.4%)	1(5.5%)	2 (11.1%)	3 (16.6%)	3 (16.6%)
District III	0	1 (6.2%)	12 (75%)	13 (81.2)	2 (12.5%)	0	2 (12.5%)	2 (12.5%)
District IV	1 (8.3%)	3 (25%)	9 (75%)	7 (58.3%)	0	0	2 (16.6%)	2 (16.6%)
District V	0	0	15 (93.7)	9 (56.2%)	0	3 (18.7%)	1 (6.2%)	3 (18.7%)
District VI	2 (40%)	2 (40%)	3 (60%)	2 (40%)	0	0	0	0
District VII	0	11 (84.6)	13 (92.3)	0	0	0	0	2 (15.3%)
District VIII	0	0	3 (100%)	2 (66.6%)	0	0	0	0
**Total	24 (25%)	23 (24.4)	58 (61.7)	47 (50%)	3 (3.1%)	6 (6.3%)	9 (9.5%)	14 (14.8)

Moran Map Clusters
Sanitary Districts	Q1 (High-High)		Q2 (Low-Low)		Q3 (High-Low)		Q4 (Low-High)
	2007-11	2012-16	2007-11	2012-16	2007-11	2012-16	2007-11	2012-16
District I	7 (63.6%)	0	0	1 (9%)	0	0	1 (9%)	0
District II	0	1 (5.5%)	0	6 (33.3%)	0	0	0	0
District III	0	0	7 (43.7%)	4 (25%)	1 (6.2%)	0	0	0
District IV	0	1 (8.3%)	6 (50%)	2 (16.6%)	0	0	0	1 (8.3%)
District V	0	0	1 (6.2%)	0	0	0	1 (6.2%)	2 (12.5%)
District VI	2 (40%)	0	0	0	0	0	0	0
District VII	0	5 (38.4%)	3 (23%)	0	0	0	0	1 (7.6%)
District VIII	0	0	3 (100%)	2 (66.6%)	0	0	0	0
**Total	9 (9.5%)	7 (7.4%)	20 (21.2%)	15 (15.9%)	1 (1%)	0	2 (2.1%)	4 (4.2%)

Universidade Federal do Rio de Janeiro Rua Afonso Cavalcanti, 275, Cidade Nova, 20211-110 - Rio de Janeiro - RJ - Brasil, Tel: +55 21 3398-0952 e 3398-0941 - Rio de Janeiro - RJ - Brazil
E-mail: annaneryrevista@gmail.com

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[1] Corresponding author
: Roberta de Souza Pereira da Silva Ramos. E-mail: roberta_sps@hotmail.com