Psychometric Properties of the Abdominal Pain Index (API) in the Iranian Adolescent Population

Table 3

Confirmatory factor analysis and fit indices.

Fit indices	Amount	Limit
	2.83	<3
RMSEA	0.08	<0.1
CFI	0.96	>0.9
NFI	0.95	>0.9
GFI	0.96	>0.9
AGFI	0.94	>0.9

RMSEA: root mean error of approximation; CFI: comparative fit index; NFI: normed fit index; GFI: goodness of fit index; AGFI: adjusted goodness of fit index.