Table 4.

Explained variance in pain by (backward) regression analysis in femalepatients with fibromyalgia and female controls

		Fibromyalgia (N = 22)			Controls (N = 13)
Pain	Model	Adj. r2	t-score	p-value	Adj. r2	t-score	p-value
Evaluative	Model	0.00			0.00
Affective	Model	0.38		0.014
	EPQ-N		2.69	0.015
	Baseline cortisol		-2.72	0.014
	Δ systBT		2.04	0.057	0.36	2.76	0.019
Sensoric	Model	0.47		0.004
	EPQ-N		2.32	0.033	0.49	3.59	0.004
	Baseline cortisol		-2.56	0.020
	Δ cortisol		-1.74	0.099
	Δ systBT		3.00	0.008
Total	Model	0.42		0.005
	EPQ-N		2.36	0.030	0.36	7.68	0.018
	Baseline cortisol		-2.68	0.015
	Δ systBT		2.79	0.012

Adj. r²: adjusted r², Δ systBT: systolic blood pressure after 90 minutes – baseline systolic blood pressure, Δ cortisol: cortisol level after 90 minutes – baseline cortisol