Psychometric properties of the expanded prostate cancer index composite - 26 instrument in a cohort of radical prostatectomy patients: theoretical and practical examinations

Table 5 Explorative principal component analysis with direct oblimin rotation of the EPIC-26 scores of the Norwegian sample (N = 651)

EPIC-26 items	Factors
	1	2	3	4	5	6
1. Leaked urine	0.90
2. Urinary control	0.86
3. Number of pads	0.89
4 A. Dripping or leaking of urine	0.92
B. Pain or burning on urination						0.89
C. Bleeding with urination						0.88
D. Weak urine stream or incomplete emptying						0.44
E. Need to urinate frequently	0.42
5. Overall problem with urinary function	0.81
6 A. Bowel urgency		0.82
B. More frequent bowel movements		0.84
C. Loosing control over stools		0.77
D. Bloody stools		0.48
E. Abdominal/pelvic/rectal pain		0.50
7. Overall problem with bowel habits		0.87
8 A. Ability to have an erection			0.93
B. Ability to reach orgasm			0.76
9. Quality of erections			0.91
10. Frequency of erections			0.91
11. Ability to function sexually			0.91
12. Overall problem with sexual function			0.39		0.40
13 A. Hot flashes				0.67
B. Breast tenderness/enlargement				0.78
C. Feeling depressed					0.82
D. Lack of energy					0.81
E. Change in body weight				0.56	0.41
Per cent explained variance	26.7	10.2	13.5	7.1	5.3	4.2

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