. 2009 Jul 14;9:20. doi: 10.1186/1472-6874-9-20

Table 3.

Multivariate linear regression models for discomfort associated with DL

Multivariate linear regression	Type of Data	Anticipated DL discomfort (n = 122) Model R²= 0.00		Experienced DL discomfort (n = 95) Model R²= 0.08
Step 1		β(SEβ)	p	β(SEβ)	P
Age	Continuous	0.14 (0.22)	0.53	-0.33(0.30)	0.27
History of breast cancer	Yes No	-0.45 (6.15) Ref	0.94	-10.79 (8.01) Ref	0.18
NAF obtained during procedure	Yes No	2.79 (4.55) Ref	0.54	2.19 (5.79) Ref	0.71
BSI GSI	Continuous	0.11 (0.20)	0.59	0.57 (0.27)	< 0.05
Step 2
Anticipated DL discomfort	Continuous	n/a	n/a	0.09 (0.12)	0.48
BSI GSI	Continuous	n/a	n/a	0.50 (0.28)	0.08