Table 4 Logistic regression analysis of factors associated with receipt of adjuvant chemotherapy among patients not receiving neoadjuvant chemotherapy

Age at diagnosis (years)

  <50

Referent

  50 to 69

0.690

0.386 to 1.234

0.211

  ≥70

0.303

0.143 to 0.643

0.002

Comorbidities

  None

Referent

  One or more

1.090

0.810 to 1.467

0.568

Menopausal status

  Premenopause

Referent

  Menopause

1.374

0.778 to 2.428

0.274

Residential status

  Rural

Referent

  Urban

1.398

1.058 to 1.846

0.018

Tumor size

  ≤2

Referent

  >2

0.799

0.510 to 1.150

0.198

Lymph node metastasis

  Negative

Referent

  Positive

1.383

1.057 to 1.809

0.018

Distant metastasis

  Negative

Referent

  Positive

1.908

0.191 to 19.015

0.582

Hormone receptor status^a

  ER- and PR-

Referent

  ER + and/or PR+

1.425

0.981 to 2.070

0.063