Table 3.

Generalized Estimating Equation Analysis of OCT Parameters.

OCT Parameter	DLB Group	Control Group	P Value a
Central subfield thickness (µm)
Eyes (n)	32	84
Mean ± SD	269.5 ± 41.0	265.0 ± 18.6	.705
Median	258.5	267.0
Range	221.0, 389.0	222.0, 305.0
Ganglion cell inner plexiform layer average thickness (µm)
Eyes (n)	33	83
Mean ± SD	74.2 ± 5.7	77.6 ± 6.0	.040b
Median	74.0	78.0
Range	62.0, 97.0	61.0, 91.0
Retinal nerve fiber layer average thickness (µm)
Eyes (n)	32	85
Mean ± SD	84.4 ± 6.9	88.2 ± 8.7	.072
Median	85.0	88.0
Range	66.0, 96.0	66.0, 107.0
Choroidal vascularity index (%)
Eyes (n)	28	85
Mean ± SD	0.664 ± 0.018	0.658 ± 0.017	.127
Median	0.662	0.657
Range	0.623, 0.701	0.618, 0.705

Abbreviations: DLB, dementia with Lewy bodies; OCT, optical coherence tomography.

^aP value is based on test of difference between means using generalized estimating equations.

^bStatistically significant.