Factorial validity of an abbreviated Neighborhood Environment Walkability Scale for seniors in the Nurses’ Health Study

Table 1 Measurement model fit indices for confirmatory factor analyses of modified NEWS-A for seniors and original NEWS-A among 2,920 NHS participants (aged 61-88 years) in California, Massachusetts, and Pennsylvania, 2008

Measurement model	χ ²	df	CFI	NNFI	RMSEA	RMSR
A priori modified NEWS-A for seniors^a	8384.53	573	0.75	0.73	0.07	0.10
Final modified NEWS-A for seniors^b	2557.13	284	0.91	0.90	0.05	0.05
A priori original NEWS-A^c	2891.72	237	0.87	0.85	0.06	0.06
Final original NEWS-A^d	1313.07	137	0.94	0.92	0.05	0.05

Abbreviations: CFI comparative fit index, NNFI non-normed fit index, RMSEA root mean square error of approximation, RMSR root mean square residual.
^a7-factor solution, 36 items (24 original NEWS-A items and 12 additional items).
^b6-factor solution, 26 items.
^c6-factor solution, 24 items.
^d6-factor solution, 19 items.

ISSN: 1479-5868