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Female breast cancer survival in Qidong, China, 1972-2011: a population-based study.

Zhu J, Chen JG, Chen YS, Zhang YH, Ding LL, Chen TY - BMC Cancer (2014)

Bottom Line: There were statistical differences among the age groups (RS: χ2 = 152.15, P = 0.000).Survival outcomes from Qidong registered cases with breast cancer have shown gradual progress during the past 40 years.The disparities between survival rates of this area and developed countries are getting narrower, but there is still great need for improving survival in Qidong.

View Article: PubMed Central - HTML - PubMed

Affiliation: Qidong Liver Cancer Institute, Qidong Cancer Registry, Qidong People's Hospital, Qidong 226200, China. chenjg@vip.sina.com.

ABSTRACT

Background: Based on data from the population-based Qidong Cancer Registry, we report a survival analysis for female breast cancer patients diagnosed during 1972-2011 in order to assess the long-term trends for the prognosis of this cancer.

Methods: The last follow-up for survival status of the 3,398 registered female breast cancer cases was April, 2012. Cumulative observed survival (OS) and relative survival (RS) rates were calculated using Hakulinen's method performed by the SURV3.01 Software developed at the Finnish Cancer Registry.

Results: The one-, three-, five-, ten-, fifteen-, twenty-, thirty-, and forty- year OS rates were 83.61%, 67.53%, 58.75%, 48.56%, 42.57%, 38.30%, 29.19%, 19.35%; and the RS rates were 84.76%, 70.45%, 63.12%, 56.81%, 55.26%, 56.36%, 62.59%, 84.00%, respectively. Five-year RS rates of age groups 15-34, 35-44, 45-54, 55-64, 65-74, and 75+ were 60.17%, 68.27%, 67.79%, 56.03%, 55.50%, and 57.28%; 10-year RS rates were 54.16%, 59.59%, 61.34%, 47.78%, 51.30%, and 59.28%, respectively. There were statistical differences among the age groups (RS: χ2 = 152.15, P = 0.000). Remarkable improvement could be seen for the 5-year RS rates from 52.08% in 1972 to 69.26% in 2003-2007, and the 10-year RS rates from 43.16% in 1972 to 60.85% in 1998-2002, respectively.

Conclusions: Survival outcomes from Qidong registered cases with breast cancer have shown gradual progress during the past 40 years. The disparities between survival rates of this area and developed countries are getting narrower, but there is still great need for improving survival in Qidong.

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Related in: MedlinePlus

Trends for the observed survival (OS) and relative survival (RS) rates of female breast cancer in Qidong, China, 1972–2011. (−Ο−) OS; (−Δ−) RS.
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Figure 1: Trends for the observed survival (OS) and relative survival (RS) rates of female breast cancer in Qidong, China, 1972–2011. (−Ο−) OS; (−Δ−) RS.

Mentions: Table 1 shows OS and RS rates by the survival year. The one-, three-, five-, ten-, fifteen, twenty, thirty, and forty-year OS rates of female breast cancer in Qidong during 1972–2011 were 83.61%, 67.53%, 58.75%, 48.56%, 42.57%, 38.30%, 29.19%, and 19.35%, while the RS rates were 84.76%, 70.45%, 63.12%, 56.81%, 55.26%, 56.36%, 62.59%, and 84.00%, respectively. Figure 1 indicates OS and RS trends of female breast cancer in Qidong during 1972–2011 by the survival year. Significant disparities between OS and RS rates could be found in female breast cancer patients surviving over 10 years. For survivors more than 20 years after diagnosis, RS rates increased with the survival year, implying that these women with breast cancer have a relatively higher survival chance compared to the general population with the same demographical characteristics.


Female breast cancer survival in Qidong, China, 1972-2011: a population-based study.

Zhu J, Chen JG, Chen YS, Zhang YH, Ding LL, Chen TY - BMC Cancer (2014)

Trends for the observed survival (OS) and relative survival (RS) rates of female breast cancer in Qidong, China, 1972–2011. (−Ο−) OS; (−Δ−) RS.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4016778&req=5

Figure 1: Trends for the observed survival (OS) and relative survival (RS) rates of female breast cancer in Qidong, China, 1972–2011. (−Ο−) OS; (−Δ−) RS.
Mentions: Table 1 shows OS and RS rates by the survival year. The one-, three-, five-, ten-, fifteen, twenty, thirty, and forty-year OS rates of female breast cancer in Qidong during 1972–2011 were 83.61%, 67.53%, 58.75%, 48.56%, 42.57%, 38.30%, 29.19%, and 19.35%, while the RS rates were 84.76%, 70.45%, 63.12%, 56.81%, 55.26%, 56.36%, 62.59%, and 84.00%, respectively. Figure 1 indicates OS and RS trends of female breast cancer in Qidong during 1972–2011 by the survival year. Significant disparities between OS and RS rates could be found in female breast cancer patients surviving over 10 years. For survivors more than 20 years after diagnosis, RS rates increased with the survival year, implying that these women with breast cancer have a relatively higher survival chance compared to the general population with the same demographical characteristics.

Bottom Line: There were statistical differences among the age groups (RS: χ2 = 152.15, P = 0.000).Survival outcomes from Qidong registered cases with breast cancer have shown gradual progress during the past 40 years.The disparities between survival rates of this area and developed countries are getting narrower, but there is still great need for improving survival in Qidong.

View Article: PubMed Central - HTML - PubMed

Affiliation: Qidong Liver Cancer Institute, Qidong Cancer Registry, Qidong People's Hospital, Qidong 226200, China. chenjg@vip.sina.com.

ABSTRACT

Background: Based on data from the population-based Qidong Cancer Registry, we report a survival analysis for female breast cancer patients diagnosed during 1972-2011 in order to assess the long-term trends for the prognosis of this cancer.

Methods: The last follow-up for survival status of the 3,398 registered female breast cancer cases was April, 2012. Cumulative observed survival (OS) and relative survival (RS) rates were calculated using Hakulinen's method performed by the SURV3.01 Software developed at the Finnish Cancer Registry.

Results: The one-, three-, five-, ten-, fifteen-, twenty-, thirty-, and forty- year OS rates were 83.61%, 67.53%, 58.75%, 48.56%, 42.57%, 38.30%, 29.19%, 19.35%; and the RS rates were 84.76%, 70.45%, 63.12%, 56.81%, 55.26%, 56.36%, 62.59%, 84.00%, respectively. Five-year RS rates of age groups 15-34, 35-44, 45-54, 55-64, 65-74, and 75+ were 60.17%, 68.27%, 67.79%, 56.03%, 55.50%, and 57.28%; 10-year RS rates were 54.16%, 59.59%, 61.34%, 47.78%, 51.30%, and 59.28%, respectively. There were statistical differences among the age groups (RS: χ2 = 152.15, P = 0.000). Remarkable improvement could be seen for the 5-year RS rates from 52.08% in 1972 to 69.26% in 2003-2007, and the 10-year RS rates from 43.16% in 1972 to 60.85% in 1998-2002, respectively.

Conclusions: Survival outcomes from Qidong registered cases with breast cancer have shown gradual progress during the past 40 years. The disparities between survival rates of this area and developed countries are getting narrower, but there is still great need for improving survival in Qidong.

Show MeSH
Related in: MedlinePlus