Psychometrics of chronic liver disease questionnaire in Chinese chronic hepatitis B patients

Table 2 Internal consistency reliability, floor and ceiling effects of the chronic liver disease questionnaire (n = 460) n (%)

Items	Cronbach’sα	Floor and ceiling effects1
		Floor effects	Ceiling effects
Abdominal symptoms	0.80	1 (0.2)	50 (10.9)
Fatigue	0.82	1 (0.2)	1 (0.2)
Systemic symptoms	0.65	2 (0.4)	16 (3.5)
Activity	0.66	1 (0.2)	36 (7.8)
Emotional function	0.90	1 (0.2)	5 (1.1)
Worry	0.85	1 (0.2)	17 (3.7)
Overall	0.83	1 (0.2)	1 (0.2)

¹Floor and ceiling effect: The number and percentage of the chronic hepatitis B patients at the lowest and highest possible scores.