Table 1.
Central Foveal Thickness by Median Urinary Iodine Concentration in Patients with Retinitis Pigmentosa
| Model | Variable | Eyes | Loge CFT ± SEMa(Geometric Mean) | P-valueb |
|---|---|---|---|---|
| 1 | Median UICc | 0.02 | ||
| < 100 μg/L | 103 | 5.254 ± 0.052 (191 μm) | ||
| 100 - 199 μg/L | 157 | 5.120 ± 0.039 (167 μm) | ||
| ≥ 200 μg/L | 115 | 5.076 ± 0.034 (160 μm) |
a
CFT: central foveal thickness. Normal values for CFT with the same instrumentation are 167 ± 5 μm (mean ± sem) based on 22 volunteers (aged 25–56 years).30
b
By PROC MIXED of SAS with the eye as the unit of analysis. See Methods for additional details.
c
UIC: urinary iodine concentration. The geometric mean values for these three ranges were 68 μg/L, 139 μg/L, and 263 μg/L, respectively.