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. 2023 Aug 7;13(8):e072632. doi: 10.1136/bmjopen-2023-072632

Table 3.

Multivariate analysis of overall survival in the training cohort

Variables Hazard ratio 95% CI P value
Age (year) 1.054 1.020 to 1.090 0.020
Grade
 I/II Reference
 III/IV 1.159 0.504 to 2.666 0.728
Hormone receptor status
 Positive Reference
 Negative 5.368 2.084 to 13.830 0.001
Tumour size (mm)
 <20 Reference
 20–50 2.292 0.631 to 8.322 0.208
 >50 4.807 0.919 to 25.153 0.063
Number of positive regional nodes
 0 Reference
 1–3 18.314 1.387 to 241.811 0.027
 4–9 10.340 1.044 to 102.388 0.046
 ≥10 26.776 3.300 to 23.115 0.002
Stage
 I Reference
 II 0.057 0.004 to 0.802 0.034
 III 0.096 0.100 to 0.964 0.046
 IV 0.211 0.170 to 2.641 0.228
Surgery
 Conserving surgery Reference
 Mastectomy 1.119 0.393 to 3.190 0.833