Mortality trends of breast and cervical cancer in Passo Fundo, Rio Grande do Sul: an analysis by age and schooling, 1999-2019

Pecinato, Vanessa; Jacobo, Andréia; Silva, Shana Ginar da

doi:10.1590/S2237-96222022000300021

Brasil

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ORIGINAL ARTICLE • Epidemiol. Serv. Saúde 31 (3) • 2022 • https://doi.org/10.1590/S2237-96222022000300021 linkcopy

Mortality trends of breast and cervical cancer in Passo Fundo, Rio Grande do Sul: an analysis by age and schooling, 1999-2019

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Abstract

Objective: to analyze the temporal trend of mortality due to malignant neoplasms of the breast and cervix from 1999 to 2019 in Passo Fundo, Rio Grande do Sul, Brazil.

Methods: this was a time-series study based on data from the Mortality Information System; standardized rates were calculated according to age and schooling, and the temporal trend was assessed using Prais-Winsten regression.

Results: the overall mortality coefficients for cervical cancer (β = -0.03; 95%CI -0.08;0.02) and for breast cancer (β = -0.006; 95%CI -0.02;0.01) were stable over the time series; in both types of neoplasms, a rising trend was identified in women with up to 7 years of schooling; on the other hand, a stationary trend was found in the majority of the age strata analyzed.

Conclusion: older women and those with low levels of schooling had the worst prognosis.

Keywords: Breast Neoplasms; Uterine Cervical Neoplasms; Time Series Studies; Mortality Records; Public Health

Variables	Deaths (1999-2019)	Reference Population	Mean standardized mortality rate^a (1999-2019)	Coefficient β^b (95%CI^c)	APC^d (95%CI^c)	p-value^e	Trend
Overall	130	97,713	9.3	-0.03 (-0.08;0.01)	-6.7 (-16.8;2.3)	0.153	Stationary
Age (in years)
20-29	6	16,461	1.8	0.00 (-0.01;0.02)	0.9 (-2.3;4.7)	0.640	Stable
30-39	22.5	14,940	7.3	-0.02 (-0.07;0.04)	-4.5 (-14.9;9.6)	0.473	Stable
40-49	23	13,259	8.2	-0.01 (-0.05;0.04)	-1.4 (-10.9;9.6)	0.784	Stable
50-59	32	10,756	15.6	-0.05 (-0.08;-0.03)	-10.9 (-16.8;-6.7)	0.001	Falling
60-69	25.5	7,068	20.3	-0.13 (-0.18;-0.08)	-25.9 (-33.9;-16.8)	< 0.001	Falling
70-79	15.5	4,129	16.7	0.01 (-0.03;0.05)	2.1 (-6.7;12.2)	0.664	Stable
≥ 80	5.5	1,924	13.7	-0.00 (-0.06;0.06)	-0.7 (-12.9;14.8)	0.900	Stable
Schooling (in years of study)
< 7	71	20,473	21.4	0.12 (0.07;0.16)	31.8 (17.5;44.5)	< 0.001	Rising
≥ 8	23	47,010	2.3	0.01 (-0.04;0.06)	1.9 (-8.8;14.8)	0.741	Stable

Variables	Deaths (1999-2019)	Reference Population	Mean standardized mortality rate^a (1999-2019)	Coefficient β^b (95%CI^c)	APC^d (95%CI^c)	p-value^e	Trend
Overall	562.5	97,713	39.5	-0.01 (-0.02;0.01)	-1.4 (-4.5;14.8)	0.445	Stable
Age (in years)
20-29	5.5	16,461	1.6	-0.01 (-0.07;0.05)	-1.4 (-14.9;12.2)	0.682	Stable
30-39	17.5	14,940	5.9	-0.03 (-0.05;0.00)	-6.7 (-10.9;0.7)	0.074	Stable
40-49	65.5	13,259	23.9	-0.04 (-0.07;-0.01)	-8.8 (-14.9;-2.3)	0.021	Falling
50-59	136.5	10,756	62.6	-0.02 (-0.04;-0.00)	-4.50 (-8.8;-0.1)	0.049	Falling
60-69	101.5	7,068	20.3	-0.03 (-0.07;0.02)	-6.7 (-14.9;4.7)	0.225	Stable
70-79	96.5	4,129	113.3	0.01 (-0.03;0.04)	2.3 (-6.7;9.6)	0.607	Stable
≥ 80	138.5	1,924	404.5	-0.07 (-0.10;-0.03)	-14.9 (-20.6;-6.7)	< 0.001	Falling
Schooling (in years of study)
< 7	280	20,473	90.9	0.14 (0.08;0.20)	38.0 (20.2;58.5)	< 0.001	Stable
≥ 8	133	47,010	12.7	0.11 (0.04;0.17)	28.8 (9.6;47.9)	0.003	Stable

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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 - Brasília - DF - Brazil
E-mail: revista.saude@saude.gov.br

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[TFN3] a) Number of deaths per 100,000 women; b) After logarithmic transformation; c) 95%CI: 95% confidence interval; d) APC: Annual Percentage Change; e) Prais-Winsten linear regression t-test, 5% significance level.