Table 1.

PubMed/MEDLINE Search Strategy

1	(((((“Breast Neoplasms” [Mesh] OR ((“breast” OR “mammary”) AND (“neoplasms” OR “neoplasm” OR “neoplastic” OR “cancer” OR “cancers” OR “cancerous” OR “carcinoma” OR “carcinomas” OR “tumor” OR “tumors” OR “tumour” OR “tumours” OR “malignant” OR “malignancy” OR “malignancies” OR “metastatic” OR “metastasis” OR “metastases”))))
2	((“Chemotherapy, Adjuvant” [Mesh] OR “Antineoplastic Agents” [Mesh] OR “Adjuvant Drug Therapy” OR “chemotherapy” OR “Antineoplastic Combined Chemotherapy Protocols”[Mesh])))
3	(“relative dose intensity” OR “RDI” OR “Drug Administration Schedule” [Mesh] OR ((“dose” OR “doses” OR “dosage” OR “dosages” OR “treatment” OR “therapy” OR “schedule” OR “regimen” OR “regimens”) AND (“intensity” OR “density” OR “dense” OR “interval” OR “reduction” OR “reductions” OR “reduced” OR “delay” OR “delays” OR “delayed” OR “alternate” OR “alternative” OR “interruptions” OR “interruption” OR “interrupted” OR “discontinuation” OR “discontinuations” OR “decreases” OR “decreased” OR “suboptimal” OR “variation” OR “variations”))))
4	(“Practice Patterns, Physicians’“[Mesh] OR “Patient Compliance”[Mesh] OR “Patient Non Compliance” OR “patient non-adherence” OR “nonadherence” OR “adherent” OR “noncompliance” OR “non-persistence” OR “compliance” OR “adherence” OR “Drug Utilization Review”[Mesh] OR “Drug-Use Review” OR “Drug Utilization Evaluation” OR “Guideline Adherence” [Mesh] OR “Medication Adherence” [MeSH Terms] OR “Withholding Treatment” [MeSH Terms] OR “treatment refusal” OR “variation” OR “variations”))
5	((“Socioeconomic” OR “socio-economic” OR “Social Class”[MeSH Terms] OR “Socioeconomic Factors”[MeSH Terms] OR “race” OR “races” OR “racial” OR “ethnicity” OR “ethnic” OR “minority” OR “insurance status” OR “Insurance Coverage” [MeSH Terms] OR “Healthcare Disparities” [MeSH Terms] OR “Disparities” OR “disparity”OR “inequality” OR “inequalities” OR “unequal” OR “African Continental Ancestry Group” [MeSH Terms] OR “African-American” OR “African-Americans” OR “Black” OR “Blacks” OR “White” OR “Whites” OR “Caucasian” OR “Non-white” OR “Non-whites” OR “Continental Population Groups” [MeSH Terms] OR “European Continental Ancestry Group” [MeSH Terms] OR “Hispanic Americans” [MeSH Terms] OR “Overweight” OR “obese” OR “Obesity” OR “Body Mass Index” [MeSH Terms] OR “BMI” OR “Obesity” [MeSH Terms] OR “Feeding Behavior” [MeSH Terms] OR “Employment” [Mesh] OR “Return to Work” [Mesh] OR “Work” [Mesh] OR “Unemployment” [Mesh] OR “Workplace” [Mesh] OR “Employment” OR “labor” OR “labour” OR “underemployment” OR “unemployment” OR “work” OR “working” OR “population”))
6	1 AND 2 AND 3 AND 4 AND 5

Abbreviation: Mesh = Medical Subject Heading