Pain Research and Management

Research Article

Assessing the Structure of the Ways of Coping Questionnaire in Fibromyalgia Patients Using Common Factor Analytic Approaches

Table 3

Factors extracted by mathematical method and factoring rule.


Rule	Approach
Rule	MLF	IPF	PAF	PCF

Eigenvalue > 1	7	9	7	16
5% unique variance	5	3	5	3
10% unique variance	3	2	3	1
70% communal variance	5	14	4
80% communal variance	7	21	6
AIC		—	—	—
BIC	5	—	—	—
	5	6	5	5
95% PA	4	5	4	6

Note. AIC = Akaike’s Information Criteria; BIC = Bayes’s Information Criteria; PA = parallel analysis; MLF = maximum likelihood factoring; IPF = iterative principal factoring; PAF = principal axis factoring; PCF = principal components factoring. estimates include the elbow in the number of factors. 95% eigenvalue = 1.6276. solution.