. Author manuscript; available in PMC: 2015 Jun 8.

Published in final edited form as: J Alzheimers Dis. 2012;32(1):23–32. doi: 10.3233/JAD-2012-120430

Table 3.

Relative fit of NFT Models
Model	χ²:df	RMSEA	CFI	BCC
1	83.40:26, p <0.001	0.026	0.988	185.78
2	51.14:25, p = 0.002	0.018	0.994	155.53
3	51.14:25, p = 0.002	0.018	0.994	155.53
Relative fit of NP Models
Model	χ²:df	RMSEA	CFI	BCC
1	77.38:26, p <0.001	0.025	0.991	179.76
2	51.21:25, p = 0.002	0.018	0.995	155.21
3	51.21:25, p = 0.002	0.018	0.995	155.21

BCC = Browne Cudeck Criteria. Lower values indicating better fit; CFI = Comparative Fit Index. CFI values >0.95 indicate excellent fit; df = degrees of freedom; NFT = Neurofibrillary tangle factor; NP = Neuritic Plaque Factor; RMSEA = root mean square error of approximation. RMSEA values ≤ 0.05 indicate a close fit to the data.