Validation of the chronic liver disease questionnaire in Serbian patients

Table 3 Exploratory factor analysis of the serbian version of the chronic liver disease questionnaire

Original CLDQ items	Factor 1 Systemic symptoms	Factor 2 Emotional function	Factor 3 Fatigue	Factor 4 Worry	Factor 5 Sleep	Factor 6 Nutrition
Fatigue
(2) tired or fatigued	0.542	0.173	0.63612	0.271	0.018	0.140
(4) sleepy during the day	0.105	0.200	0.86812	0.004	0.156	-0.012
(8) reduced strength	0.489	0.119	0.59512	0.310	-0.019	0.220
(11) decreased level of energy	0.374	0.159	0.60012	0.385	0.055	0.282
(13) drowsy	0.168	0.287	0.82412	0.114	0.172	-0.085
Emotional function
(10) anxious	0.313	0.52112	0.354	0.358	0.022	0.267
(12) unhappy	0.034	0.67712	0.283	0.284	0.096	0.264
(15) irritable	0.118	0.82312	0.157	0.082	0.036	0.091
(16) difficulty sleeping	0.256	0.184	0.175	0.229	0.74513	0.096
(19) mood fluctuations	0.127	0.79412	0.178	0.248	0.139	-0.042
(20) incapable to fall asleeP	0.252	0.183	0.123	0.155	0.82213	0.046
(24) felt depressed	0.162	0.81512	-0.003	0.288	0.203	0.092
(26) problem concentrating	0.161	0.69712	0.078	0.240	0.089	0.224
Worry
(18) impact on family	0.237	0.269	0.037	0.76012	0.081	0.036
(22) symptoms developing into major problems	0.153	0.361	0.170	0.69612	0.229	0.015
(25) condition getting worse	-0.028	0.269	0.188	0.79112	0.240	0.152
(28) never feeling any better	0.005	0.293	0.162	0.65912	0.151	0.232
(29) availability of a liver	-0.142	-0.018	0.103	0.59912	0.460	0.127
Abdominal symptoms
(1) abdominal bloating	0.76313	0.098	0.242	0.063	-0.041	0.074
(5) abdominal pain	0.78513	0.050	0.136	-0.054	0.207	0.110
(17) abdominal discomfort	0.81113	0.228	0.138	0.205	0.072	-0.049
Activity
(7) not able to eat as much as would like	0.186	0.406	0.175	0.066	-0.079	0.54313
(9) trouble lifting or carrying heavy objects	0.389	-0.105	0.48113	0.162	0.116	0.236
(14) restriction of diet	-0.073	0.182	0.100	0.212	0.199	0.70313
Systemic symptoms
(3) bodily pain	0.79812	0.103	0.116	0.097	0.121	-0.053
(6) shortness of breath in daily activities	0.367	0.296	0.43313	-0.047	0.083	0.389
(21) muscle cramps	0.47012	0.223	0.102	0.046	0.422	0.350
(23) dry mouth	0.55612	0.305	0.261	-0.065	0.316	0.172
(27) itching	0.252	0.011	-0.193	0.370	0.358	0.48113

¹Highest factor loadings for each factor;

²Factor loadings corresponding to the factors in the original version;

³Factor loadings indicate highest loadings on other factors than the original ones. The factors “activity” and “abdominal symptoms” could not be reproduced; a new factors “sleep” and “nutrition” were found. CLDQ: Chronic liver disease questionnaire.