Table 4.

a and b. Multivariable linear regression coefficients for the log-transformed CarerQoL utility and VAS score after 6 and 12 months follow-up

	CarerQoL utility score			CarerQoL VAS score
	Beta	Std. error	Sig	Beta	Std. error	Sig
(a) T = 6 months
Age breast cancer patient	− 7.289E−5	0.001	0.924	0.001	0.001	0.092
Relationship between caregiver and breast cancer patient	0.020	0.018	0.278	-0.008	0.021	0.718
Chemotherapy	− 0.063	0.018	0.001*	− 0.044	0.020	0.038*
Radiotherapy	0.036	0.030	0.242	0.058	0.035	0.1
Adjuvant endocrine therapy	− 0.002	0.017	0.920	0.019	0.019	0.334
Type of surgery
Lumpectomy	Ref			Ref
Mastectomy	0.044	0.026	0.091	0.028	0.030	0.352
Reconstruction	0.035	0.037	0.341	0.039	0.042	0.360

(b) T = 12 months
Age breast cancer patient	− 3.433E−5	0.001	0.977	− 0.001	0.003	0.778
Relationship between caregiver and breast cancer patient	− 0.002	0.028	0.954	− 0.031	0.070	0.656
Chemotherapy	− 0.010	0.031	0.758	− 0.042	0.079	0.601
Radiotherapy	− 0.061	0.051	0.237	− 0.091	0.128	0.484
Adjuvant endocrine therapy	− 0.009	0.028	0.735	0.018	0.070	0.797
Type of surgery
Lumpectomy	Ref			Ref
Mastectomy	− 0.032	0.046	0.701	− 0.011	0.115	0.925
Reconstruction	− 0.033	0.062	0.591	− 0.117	0.155	0.455

*Significance at the level 0.05 (two-tailed)