Cytokines, Fatigue, and Cutaneous Erythema in Early Stage Breast Cancer Patients Receiving Adjuvant Radiation Therapy

Table 3

Step  1—Heckman model: parameters estimation of correlation between erythema and proinflammatory cytokines levels.

Variable	Coefficient	Standard Error	𝑃 value
Probit model for the inflammatory markers
Intercept	−1.648	0.352	2.87𝑒−06
Erythema	2.065	0.468	1.01𝑒−05
𝜎^2𝑏	3.792