Table 3 Univariate and multivariate analysis of variables related to surgical compliance before PSM

Age, years

 <62

Reference

< 0.001

Reference

 62–77

1.663 (1.536—1.802)

< 0.001

1.644 (1.513—1.787)

< 0.001

 >77

5.887 (5.398—6.421)

< 0.001

6.231 (5.666—6.852)

< 0.001

Race

 Black

Reference

0.012

Reference

 White

0.874 (0.79—0.966)

0.008

0.825 (0.739—0.922)

< 0.001

 Others

0.959 (0.837—1.098)

0.540

1.2 (1.032—1.395)

0.018

Sex

 Female

Reference

< 0.001

Reference

 Male

0.852 (0.79—0.919)

< 0.001

0.862 (0.794—0.935)

< 0.001

Behavior recode

 Benign

Reference

< 0.001

Reference

 Borderline malignancy

0.135 (0.104—0.176)

< 0.001

0.133 (0.102—0.174)

< 0.001

 Malignant

0.669 (0.516—0.866)

0.002

0.606 (0.461—0.797)

< 0.001

Tumor size

 <20 mm

Reference

< 0.001

Reference

 20-62 mm

0.23 (0.199—0.267)

< 0.001

0.238 (0.204—0.276)

< 0.001

 > 62 mm

0.172 (0.123—0.239)

< 0.001

0.174 (0.125—0.243)

< 0.001

 unknown

2.617 (2.33—2.94)

< 0.001

2.681 (2.377—3.023)

< 0.001

Income

 < $50,000

Reference

< 0.001

Reference

 $50,000 - $59,999

0.641 (0.572—0.718)

< 0.001

0.84 (0.737—0.958)

0.009

 $60,000 - $70,000

0.513 (0.465—0.566)

< 0.001

0.766 (0.676—0.869)

< 0.001

 > $70,000

0.575 (0.525—0.63)

< 0.001

0.75 (0.664—0.848)

< 0.001

Rural/Urban

 Rural

Reference

< 0.001

Reference

 Urban

0.507 (0.464—0.554)

< 0.001

0.581 (0.515—0.656)

< 0.001