Table 3.

Prediction of FM impact for each stage of chronicity

Predicting FM impact in Group A
Variables		Beta	R²	Pearson r
Step1	Pain	0.55**	0.30	0.55**
Step2	Pain	0.32**	0.66	0.81**
	Rumination	0.61**
Predicting FM impact in Group B
Variables		Beta	R²	Pearson r
Step1	Pain	0.50**	0.25**	0.50**
Step2	Pain	0.28*	0.42**	0.64**
	Magnification	0.45**
Step2	Pain	0.30*	0.41**	0.64**
	Helplessness	0.44**
Predicting FM impact in Group C
Variables		Beta	R²	Pearson r
Step1	Pain	0.46**	0.21**	0.46**
Step2	Pain	0.30**	0.33**	0.58**
	Helplessness	0.39**

. The impact was measured with the Fibromyalgia Impact Questionnaire, catastrophising with the Pain Catastrophising Scale and pain with the McGill Pain Questionnaire. * p < 0.05, ** p < 0.01.