Table 3. Linear Regression Model of Satisfaction with Breast Cosmetic Outcomes* (n=1245**).
Characteristic | Estimated Coefficient | Standard Error | 95% CI | P |
---|---|---|---|---|
Intercept | 3.41 | 0.13 | (3.15, 3.67) | <0.001 |
Surgical treatment | 0.0002 | |||
Mastectomy without Reconstruction | -0.38 | 0.093 | (-0.56, -0.20) | |
Mastectomy with Autologous Reconstruction | 0.21 | 0.16 | (-0.093, 0.52) | |
Mastectomy with Implant Reconstruction | -0.12 | 0.13 | (-0.38, 0.14) | |
Breast conservation | 0 | 0 | (0, 0) | |
Chemotherapy | -0.16 | 0.071 | (-0.30, -0.017) | 0.028 |
BMI*** | -0.027 | 0.006 | (-0.038, -0.016) | <0.0001 |
Smoking | -0.26 | 0.11 | (-0.46, -0.048) | 0.016 |
Age**** | 0.003 | 0.003 | (-0.004, 0.010) | 0.42 |
Education | 0.23 | |||
High School or less | -0.14 | 0.093 | (-0.33, 0.038) | |
Some College | -0.11 | 0.082 | (-0.28, 0.049) | |
College or more | 0 | 0 | (0, 0) | |
Race | 0.093 | |||
White (non-Latina) | 0 | 0 | (0, 0) | |
Black | 0.20 | 0.084 | (0.039, 0.37) | |
Latina (English-speaking) | 0.015 | 0.097 | (-0.18, 0.21) | |
Latina (Spanish-speaking) | 0.010 | 0.12 | (-0.22, 0.24) | |
Family Income at Diagnosis | 0.011 | |||
<$20,000 | 0 | 0 | (0, 0) | |
$20,000-$70,000 | 0.20 | 0.11 | (-0.023, 0.43) | |
>$70,000 | 0.054 | 0.13 | (-0.19, 0.30) | |
unknown | 0.34 | 0.13 | (0.092, 0.60) |
Satisfaction with cosmetic outcomes was measured by an interval scale derived the mean of 6 items, as described more fully in the methods section. Mean (SD) of the scale was 3.33 (1.02), with a minimum of 1 and maximum of 5. Cronbach's alpha was 0.90.
measured in all patients but 205 patients were not included because of missing values either in dependent or independent variables
BMI centered about 30, such that every one-unit increase in BMI results in an average of a 0.02 unit decrease in satisfaction, and each one-unit decrease BMI below 20 results in a 0.02 unit increase in satisfaction
Age centered about 60, such that every one-year increase in age results in an average of a 0.003 unit increase in satisfaction, and each one year decrease in age below 60 results in a 0.003 unit decrease in satisfaction