Validation of the International Prostate Symptom Score in Chinese males and females with lower urinary tract symptoms

Table 2 Score distribution, corrected item-total correlation and reliability of the IPSS (HK v2) by gender

	Female				Male				Overall
	n	Mean	(SD)	Corrected item-total correlation	n	Mean	(SD)	Corrected item-total correlation	n	Mean	(SD)	Corrected item-total correlation
1. Incomplete emptying	126	1.02	(1.22)	0.52	107	1.90	(1.61)	0.58	233	1.42	(1.47)	0.58
2. Frequency	126	2.01	(1.61)	0.37	106	2.37	(1.68)	0.36	232	2.17	(1.65)	0.38
3. Intermittency	126	0.79	(1.34)	0.54	107	1.41	(1.82)	0.56	233	1.07	(1.61)	0.57
4. Urgency	126	1.28	(1.60)	0.35	107	1.39	(1.67)	0.27	233	1.33	(1.63)	0.30
5. Weak stream	125	0.66	(1.22)	0.56	107	1.39	(1.56)	0.54	232	1.00	(1.43)	0.57
6. Straining	126	0.46	(1.03)	0.40	107	0.82	(1.39)	0.41	233	0.63	(1.22)	0.42
7. Nocturia	125	3.38	(1.89)	0.19	105	3.75	(1.65)	0.18	230	3.55	(1.79)	0.20
Total symptom score	124	9.50	(5.88)		104	13.03	(6.81)		228	11.11	(6.55)
8. Quality of life	126	3.20	(1.89)		106	3.24	(1.80)		232	3.22	(1.85)
		Female				Male				Overall
	n	Floor	Ceiling		n	Floor	Ceiling		n	Floor	Ceiling
Total symptom score	124	2.40%	0.00%		104	1.00%	0.00%		228	1.80%	0.00%
8. Quality of life score	126	4.80%	3.20%		106	4.70%	5.70%		232	4.70%	4.30%
		Female				Male				Overall
Cronbach’s alpha		0.68				0.70				0.71
		Female				Male				Overall
Intraclass correlation	n				n				n
Total symptom score	40	0.75			37	0.81			77	0.80
Quality of life score	41	0.58			38	0.84			79	0.70

ISSN: 1477-7525