Table 3 –

Unconditional and Joint Conditional Multilevel Linear Regression Models for Interference with Employment

Variable	Coefficient (SE)
	Unconditional Model	Final Model
Fixed effects
Intercept	3.538 (. 183)+	3.213 (.177)+
Time (linear rate of change)	−0.076 (.013)+	−0.072 (.015)+
Intercept
Age		−0.098 (.015)+
Income		−0.194 (.045)+
Axillary lymph node dissection		1.283 (.331)+
Sentinel lymph node biopsy		0.529 (.459)
Worst pain score in the breast prior to surgery		0.163 (.089)
Sleep disturbance score		0.018 (.008)*
Linear
Sentinel lymph node biopsy × time		−0.109 (.038)*
Sleep disturbance score × time		−0.002 (.001)+
Time varying covariates
Chemotherapy		0.460 (.130)+
Complementary or alternative therapy		0.434 (.147)*
Re-excision or mastectomy of the affected breast		0.620 (.195)*

^*p<.05,

⁺p<.001

Abbreviations: SE = standard error