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Prognostic significance of marital status in breast cancer survival: A population-based study.

ABSTRACT: Research shows that married cancer patients have lower mortality than unmarried patients but few data exist for breast cancer. We assessed total mortality associated with marital status, with attention to differences by race/ethnicity, tumor subtype, and neighborhood socioeconomic status (nSES). We included, from the population-based California Cancer Registry, women ages 18 and older with invasive breast cancer diagnosed between 2005 and 2012 with follow-up through December 2013. We estimated mortality rate ratios (MRR) and 95% confidence intervals (CI) for total mortality by nSES, race/ethnicity, and tumor subtype. Among 145,564 breast cancer cases, 42.7% were unmarried at the time of diagnosis. In multivariable-adjusted models, the MRR (95% CI) for unmarried compared to married women was 1.28 (1.24-1.32) for total mortality. Significant interactions were observed by race/ethnicity (P<0.001), tumor subtype (P<0.001), and nSES (P = 0.009). Higher MRRs were observed for non-Hispanic whites and Asians/Pacific Islanders than for blacks or Hispanics, and for HR+/HER2+ tumors than other subtypes. Assessment of interactive effect between marital status and nSES showed that unmarried women living in low SES neighborhoods had a higher risk of dying compared with married women in high SES neighborhoods (MRR = 1.60; 95% CI: 1.53-1.67). Unmarried breast cancer patients have higher total mortality than married patients; the association varies by race/ethnicity, tumor subtype, and nSES. Unmarried status should be further evaluated as a breast cancer prognostic factor. Identification of underlying causes of the marital status associations is needed to design interventions that could improve survival for unmarried breast cancer patients.

SUBMITTER: Martinez ME

PROVIDER: S-EPMC5419505 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Prognostic significance of marital status in breast cancer survival: A population-based study.

Martínez María Elena ME Unkart Jonathan T JT Tao Li L Kroenke Candyce H CH Schwab Richard R Komenaka Ian I Gomez Scarlett Lin SL

PloS one 20170505 5

Research shows that married cancer patients have lower mortality than unmarried patients but few data exist for breast cancer. We assessed total mortality associated with marital status, with attention to differences by race/ethnicity, tumor subtype, and neighborhood socioeconomic status (nSES). We included, from the population-based California Cancer Registry, women ages 18 and older with invasive breast cancer diagnosed between 2005 and 2012 with follow-up through December 2013. We estimated m ...[more]

PMID: 28475579

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Project description:Marital status proved to be an independent prognostic factor for survival in patients with breast cancer. We therefore strove to explore the impact of dynamic changes in marital status on the prognosis of breast cancer patients. We selected patients meeting the eligibility criteria from the Surveillance, Epidemiology, and End Results cancer database. We then used multivariate Cox proportional hazard regression model to analyze the effect of dynamic changes in marital status on the prognosis of overall survival (OS) and breast cancer-specific special survival (BCSS). Compared with the patients in the Single-Single group and the divorced/separated/widowed-divorced/separated/widowed (DSW-DSW) group, patients in the Married-Married group were significantly associated with better BCSS (HR 1.13, 95% CI: 1.03-1.19, P < 0.001; HR 1.19, 95% CI: 1.14-1.25, P < 0.001, respectively) and OS (HR 1.25, 95% CI: 1.20-1.30, P < 0.001; HR 1.49, 95% CI: 1.45-1.54, P < 0.001, respectively). In contrast to the DSW-DSW group, the Single-Single group and the DSW-Married group showed similar BCSS (HR 0.98, 95% CI: 0.92-1.05, P = 0.660; HR 1.06, 95% CI: 0.97-1.15, P = 0.193, respectively) but better OS (HR 1.14, 95% CI: 1.09-1.19, P < 0.001; HR 1.32, 95% CI: 1.25-1.40, P < 0.001, respectively). Compared with the Single-Single group, the Single-Married group showed significantly better BCSS (HR 1.21, 95% CI: 1.07-1.36, P = 0.003) but no difference in OS (HR 1.08, 95% CI: 0.98-1.18, P = 0.102); In contrast to the Married-DSW group, the Married-Married group exhibited better BCSS (HR 1.11, 95% CI: 1.05-1.18, P < 0.001) and OS (HR 1.27, 95% CI: 1.22-1.32, P < 0.001). Our study demonstrated that, regardless of their previous marital status, married patients had a better prognosis than unmarried patients. Moreover, single patients obtained better survival outcomes than DSW patients. Therefore, it is necessary to proactively provide single and DSW individuals with appropriate social and psychological support that would benefit them.

Dataset Information

Prognostic significance of marital status in breast cancer survival: A population-based study.

Publications

Prognostic significance of marital status in breast cancer survival: A population-based study.

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