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Table 2 Multivariable mixed effect linear model of body mass index among breast cancer patients

From: Impact of post-diagnosis weight change on survival outcomes in Black and White breast cancer patients

  BMI at baseline, kg/m2 Slope over time in BMI, kg/m2/year
Mean (SE)* P Mean (SE)* P
Race/ethnicity  
 White 27.85 (0.17) Ref. − 0.07 (0.02) Ref.
 Black 31.88 (0.20) < 0.001 − 0.47 (0.02) < 0.001
 Asian 25.39 (0.60) < 0.001 − 0.30 (0.05) < 0.001
 Hispanic 29.54 (0.73) 0.023 − 0.08 (0.07) 0.94
Age at diagnosis  
 < 50 28.75 (0.22) Ref. − 0.16 (0.02) Ref.
 ≥ 50 30.26 (0.16) < 0.001 − 0.33 (0.01) < 0.001
Carlson comorbidity index at diagnosis  
 0 29.30 (0.15) Ref. − 0.19 (0.01) Ref.
 1+ 30.96 (0.26) < 0.001 − 0.50 (0.02) < 0.001
Tumor stage  
 0 30.09 (0.34) 0.064 − 0.14 (0.03) 0.82
 1 29.42 (0.22) Ref. − 0.15 (0.02) Ref.
 2 29.71 (0.21) 0.35 − 0.30 (0.02) < 0.001
 3 30.48 (0.36) 0.016 − 0.59 (0.03) < 0.001
Chemotherapy  
 No 29.48 (0.21) Ref. − 0.32 (0.02) Ref.
 Yes 30.00 (0.20) 0.10 − 0.25 (0.02) 0.009
Smoking status at diagnosis  
 Never 29.56 (0.16) Ref. − 0.26 (0.01) Ref.
 Previous 30.44 (0.24) 0.002 − 0.36 (0.02) < 0.001
 Current 29.25 (0.36) 0.43 − 0.20 (0.03) 0.11
  1. *Multivariable fitted mean body mass index (BMI) and standard errors (SE) as well as the fitted mean slope of BMI over time are presented. All the variables in the table were included in the multivariable model