Symptoms of anal incontinence and quality of life: a psychometric study of the Norwegian version of the ICIQ-B amongst hospital outpatients

Table 4 Goodness-of-fit measures for ICIQ-B measurement model. Confirmatory Factor Analysis for Model-1 to Model-8

Fit Measure	Model-1 3-factors 17 items	Model-2 3 factors 16 items	Model-3 3 factors 15 items	Model-4 3 factors 14 items	Model-5 3 factors 13 items	Model-6 3 factors 13 items	Model-7 2 factors 11 items	Model-8 2 factors 10 items
χ²	283.339	240.317	204.662	174,77	121,430	108.492	88.725	63.443
p-value	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001	0.0001
\(\frac{x^2}{df}.\)	2.44 (Df¹ = 116)	2.38 (Df¹ = 101)	2.38 (Df¹ = 87)	2.36 (Df¹ = 74)	1.96 (Df¹ = 62)	1.75 (Df¹ = 62)	2.06 (Df¹ = 43)	1.87 (Df¹ = 34)
RMSEA	0.095	0.093	0.092	0.092	0.077	0.071	0.082	0.074
p-value (close fit test)	0.0001	0.0001	0.0001	0.0001	0.011	0.054	0.003	0.026
SRMR	0.080	0.078	0.073	0.073	0.062	0.056	0.060	0.052
CFI	0.85	0.88	0.89	0.90	0.94	0.95	0.95	0.97
TLI	0.83	0.85	0.87	0.88	0.924	0.94	0.94	0.96
\(\textrm{pc}=\frac{{\left(\sum \lambda \right)}^2}{\left[{\left(\sum \lambda \right)}^2+\sum \left(\uptheta \right)\right]}\)	0.58–0.89	0.57–0.89	0.52–0.89	0.52–0.89	0.52–0.89	0.51–0.89	0.80, 0.89	0.82, 0.89

Note. ICIQ-B International Consultation on Incontinence Questionnaire-Bowels module, RMSEA Root Mean Square Error of Approximation, SRMS Standardized Root Mean Square Residual, CFI The Comparative Fit Index, TLI Tucker-Lewis Index, ¹Df = Degrees of freedom, ρc = Composite reliability, Raykov’s factor reliability coefficient. Model-1: 17 items 3-factor solution involving all 17 original items. Model-2: 16-items 3-factor solution (item 13 is dismissed). Model-3: 15 items 3-factor solution (items 13 and 4 are dismissed). Model-4: 14-items 3-factor solution (items 13, 4 and 12 are dismissed). Model-5: 13-items 3-factor solution (items 13, 4, 12 and 14 are dismissed). Model-6: 13-items 3-factor solution (items 13, 4, 12 and 14 are dismissed and 5 is moved to Control). Model-7: 11 items 2-factor solution (Pattern factor and items 13 and 14 are dismissed). Model-8: 10 items 2-factor solution (Pattern factor and items 12, 13 and 14 were dismissed). Dismissed items in parenthesis. Listwise N = 161

ISSN: 2049-3258