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  1. Impact of adjuvant chemotherapy on survival of women with T1N0M0, hormone receptor negative breast cancer
    Bhoo-Pathy NT, Inaida S, Tanaka S, Taib NA, Yip CH, Saad M, et al.
    Cancer Epidemiol, 2017 06;48:56-61.
    PMID: 28371729 DOI: 10.1016/j.canep.2017.03.007
    BACKGROUND: The benefit of adjuvant chemotherapy in women with T1N0M0 breast cancers is unclear. While gene expression-based prognostic assays may aid management of women with early estrogen receptor (ER) positive tumors, therapeutic decision-making in women with early stage ER negative tumors remains fraught with difficulties. We investigated the association between adjuvant chemotherapy and overall survival in women with T1N0M0, hormone receptor negative breast cancers.

    METHOD: All newly diagnosed breast cancer patients with node-negative and hormone receptor negative tumors measuring≤2cm at the University Malaya Medical Centre (Malaysia) from 1993 to 2013 were included. Mortality of patients with and without adjuvant chemotherapy were compared and adjusted for possible confounders using propensity score.

    RESULTS: Of 6732 breast cancer patients, 341 (5.1%) had small (≤2cm), node-negative and hormone receptor negative tumors at diagnosis. Among them, only 214 (62.8%) received adjuvant chemotherapy. Five-year overall survival was 88.1% (95% confidence interval (CI): 82.0%-94.2%) for patients receiving chemotherapy and 89.6% (95% CI: 85.1%-94.1%) for patients without chemotherapy. Chemotherapy was not associated with survival following adjustment for age, ethnicity, tumor size, tumor grade, HER2 status, lympho-vascular invasion, type of surgery and radiotherapy administration. However, chemotherapy was associated with a significant survival advantage (adjusted hazard ratio: 0.35, 95%CI: 0.14-0.91) in a subgroup of women with high-grade tumors.

    CONCLUSION: Adjuvant chemotherapy does not appear to be associated with a survival benefit in women with T1N0M0, hormone receptor negative breast cancer except in those with high-grade tumors.

  2. Fulltext Author Correction: Perceptions of the appropriate response to norm violation in 57 societies
    Eriksson K, Strimling P, Gelfand M, Wu J, Abernathy J, Akotia CS, et al.
    Nat Commun, 2021 Apr 26;12(1):2483.
    PMID: 33903599 DOI: 10.1038/s41467-021-22955-x
  3. Fulltext Perceptions of the appropriate response to norm violation in 57 societies
    Eriksson K, Strimling P, Gelfand M, Wu J, Abernathy J, Akotia CS, et al.
    Nat Commun, 2021 03 05;12(1):1481.
    PMID: 33674587 DOI: 10.1038/s41467-021-21602-9
    Norm enforcement may be important for resolving conflicts and promoting cooperation. However, little is known about how preferred responses to norm violations vary across cultures and across domains. In a preregistered study of 57 countries (using convenience samples of 22,863 students and non-students), we measured perceptions of the appropriateness of various responses to a violation of a cooperative norm and to atypical social behaviors. Our findings highlight both cultural universals and cultural variation. We find a universal negative relation between appropriateness ratings of norm violations and appropriateness ratings of responses in the form of confrontation, social ostracism and gossip. Moreover, we find the country variation in the appropriateness of sanctions to be consistent across different norm violations but not across different sanctions. Specifically, in those countries where use of physical confrontation and social ostracism is rated as less appropriate, gossip is rated as more appropriate.
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