Quality of tuberculosis information systems after record linkage

to analyze the quality of a tuberculosis notification information system after record linkage and spatial and temporal distribution of tuberculosis in a Brazilian state.

Method:

an ecological study carried between 2006 and 2016 in Sergipe, Brazil. A deterministic linkage was performed with Notifiable Diseases Information System and Mortality Information System, recording 7,873 cases and 483 deaths. The temporal trend of tuberculosis incidence was calculated.

Results:

there was an increase among men (2.75%), > 60 years (6.29%), higher education (4.34%) and indigenous (4.76%). A total of 190 new cases (2.9%) was found. There was an increasing trend in tuberculosis incidence with a concentration of deaths in the metropolitan region.

Conclusion:

the quality of the information system showed fragility in identifying cases and deaths in Sergipe. Temporal distribution showed an increasing trend in tuberculosis incidence, and spatial distribution identified higher incidences in southeastern Brazil.

Descriptors:
Epidemiology; Tuberculosis; Health Information Systems; Spatial Distribution; Database

Epidemiological features	SINAN	SIM	Linkage	Increase	95% confidence interval	p value^* * parameter estimate with Pearson's chi-square test/SINAN - Information System for Notifiable Diseases/SIM - Mortality Information System.
Sex						0.01
Female	2383	45	2428	1.88%	0.30 - 0.32
Male	5260	145	5405	2.75%	0.69 - 0.72
Age group						0.03
0 to 19 years	597	03	600	0.5%	0.07 - 0.08
20 to 39 years old	3656	39	3695	1.06%	0.46 - 0.48
40 to 59 years old	2374	84	2458	3.53%	0.30 - 0.32
60 years and older	1016	64	1080	6.29%	0.13 - 0.15
Race/color						0.01
White	1255	30	1285	2.39%	0.15 - 0.17
Black	987	22	1009	2.22%	0.12 - 0.14
Caucasian	82	03	85	3.65%	0.02 - 0.12
Mixed-ethnicity	4933	110	5043	2.22%	0.63 - 0.65
Indigenous	21	01	22	4.76%	0.02 - 0.07
No information	365	24	389	6.57%	0.04 - 0.05
Education						0.02
None	656	07	663	1.06%	0.07 - 0.09
Elementary school	4170	91	4261	2.18%	0.53 - 0.55
High school	1224	39	1263	3.18%	0.15 - 0.16
Higher education	299	13	312	4.34%	0.03 - 0.04
No information	1294	40	1334	3.09%	0.16 - 0.17
Total	7643	190	7833	2.42

Year	SINAN cases		SIM cases			Linkage
Year	n (%)	Incidence rate	n (%)	Mortality rate	n (SIM)	n	Increase	Incidence rate
2006	599 (9.2)	28.6	44 (9.1)	2.1	30	629	5.0%	30.1
2007	495 (7.6)	23.6	36 (7.4)	1.7	21	516	4.2%	24.6
2008	594 (9.1)	28.4	36 (7.4)	1.7	18	612	3.0%	29.2
2009	581 (8.9)	27.8	46 (9.5)	2.2	16	597	2.7%	28.5
2010	511 (7.8)	24.4	39 (8.0)	1.8	17	528	3.3%	25.2
2011	578 (8.9)	27.6	48 (9.9)	2.3	20	598	3.4%	28.6
2012	515 (7.9)	24.6	43 (8.9)	2.0	14	529	2.7%	25.3
2013	622 (9.6)	29.7	45 (9.3)	2.1	08	630	1.2%	30.1
2014	670 (10.3)	32.0	57 (11.8)	2.7	16	686	2.3%	32.8
2015	638 (9.8)	30.5	44 (9.1)	2.1	14	652	2.1%	31.2
2016	671 (10.3)	32.1	45 (9.3)	2.1	16	687	2.3%	32.8
Total	6.474	28.1	483	2.1	190	6.664	2.9	28.9

Associação Brasileira de Enfermagem SGA Norte Quadra 603 Conj. "B" - Av. L2 Norte 70830-102 Brasília, DF, Brasil, Tel.: (55 61) 3226-0653, Fax: (55 61) 3225-4473 - Brasília - DF - Brazil
E-mail: reben@abennacional.org.br

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[1] Corresponding author: Shirley Verônica Melo Almeida Lima. E-mail: shirleylima@academico.ufs.br