Table 3.

Model comparisons for the association of anxiety with a work-related injury among public university employees in southwestern United States, 2011–2013

Step 1						vs M1 (base)	vs M2	vs M3

Model	df	χ²	CFI	TLI	RMSEA	Δχ² (df), p value	Δχ² (df), p value	Δχ² (df), p value

M1 (base)^*	35	724.42	0.944	0.919	0.017
M2^†	33	725.75	0.944	0.913	0.017	6.90 (2), 0.032
M3^‡	33	666.87	0.949	0.921	0.017	60.29 (2), <0.001	Not nested
M4^§	31	667.92	0.949	0.915	0.017	61.60 (4), <0.001	59.73 (2), <0.001	5.50 (2), 0.064
Step 2						vs M3	vs M5	vs M6
Model	df	χ2	CFI	TLI	RMSEA	Δχ² (df), p value	Δχ² (df), p value	Δχ² (df), p value
M5^¶	30	553.71	0.958	0.928	0.016	118.06 (3), <0.001
M6^**	30	603.62	0.954	0.921	0.017	67.11 (3), <0.001	Not nested
M7^††	29	490.10	0.963	0.934	0.015	182.33 (4), <0.001	64.44 (1), <0.001	147.71 (1), <0.001
Step 3						vs M7	vs M8	vs M9
Model	df	χ²	CFI	TLI	RMSEA	Δχ² (df), p value	Δχ² (df), p value	Δχ² (df), p value
M8^‡‡	28	488.25	0.963	0.932	0.015	1.42 (1), 0.233
M9^§§	28	467.18	0.964	0.935	0.015	23.07 (1), <0.001	Not nested
M10^¶¶	27	465.36	0.965	0.933	0.015	24.41 (2), <0.001	23.03 (1), <0.001	1.35 (1), 0.245

M1 (base): first-order autoregressive associations only.

^†

M2: M1 plus paths from anxiety at T1 to injury at T2 and from anxiety at T2 to injury at T3.

^‡

M3: M1 plus paths from injury at T1 to anxiety at T2 and from injury at T2 to anxiety at T3.

^§

M4: M1 plus paths from anxiety at T1 to injury at T2, from anxiety at T2 to injury at T3, from injury at T1 to anxiety at T2 and from injury at T2 to anxiety at T3.

^¶

M5: M4 plus path from anxiety at T1 to anxiety at T3.

^**

M6: M4 plus path from injury at T1 to injury at T3.

^††

M7: M4 plus paths from anxiety at T1 to anxiety at T3 and from injury at T1 to injury at T3.

^‡‡

M8: M7 plus path from anxiety at T1 to injury at T3.

^§§

M9: M7 plus path from injury at T1 to anxiety at T3.

^¶¶

M10: M7 plus paths from anxiety at T1 to injury at T3 and from injury at T1 to anxiety at T3.

^Δ

χ², chi-square difference test; base, baseline model; CFI, Comparative Fit Index; RMSEA, Root Mean Square Error of Approximation; TLI, Tucker-Lewis Index.