Evaluation of the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire in diarrheal-predominant irritable bowel syndrome patients

Table 3 Comparison between original subscale structure and data-suggested structure

	EFA Model with Varimax Rotation (Eigenvalues)
Original subscale	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5	Factor 6
Original subscale	(37.8)	(3.20)	(2.48)	(1.76)	(1.46)	(1.24)
Dysphoria	13, 16	1, 6, 7, 9, 10	30
Interference with activity		18	3, 27, 29, 31	22	19
Body image				5, 21, 25, 26
Health worry	32			4	15
Food avoidance					11, 23, 28
Social reaction	14, 17, 34			2
Sexual						12, 20
Relationship	8, 24, 33

Note: Eigenvalues for the extracted factors are in parentheses and higher values represent higher amounts of the variance observed in the data captured by a given factor.

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