Table 2.

Central Foveal Thickness by Urinary Iodine Concentration in Patients with Retinitis Pigmentosa with and without Cystoid Macular Edema

Model	Variable	Eyes	Loge CFT ± SEMa (Geometric Mean)	P- valueb
3	Median UICc for Eyes with CMEd			< 0.001
	< 100 μg/L	35	5.589 ± 0.090 (267 μm)
	100 - 199 μg/L	50	5.238 ± 0.077 (188 μm)
	≥ 200 μg/L	35	5.149 ± 0.062 (172 μm)
4	Median UICc for Eyes without CMEd			0.66
	< 100 μg/L	68	5.004 ± 0.048 (149 μm)
	100 - 199 μg/L	107	5.055 ± 0.033 (157 μm)
	≥ 200 μg/L	80	5.030 ± 0.031 (153 μm)

^aCFT: central foveal thickness.

^bBy PROC MIXED of SAS with the eye as the unit of analysis. See Methods for additional details.

^cUIC: urinary iodine concentration.

^dCME: cystoid macular edema.