Table 3 Factors affecting repetitive measurements of BCVA^a for 1 year

BCVA best corrected visual acuity, Presence of SRF presence of macular subretinal fluid, DME diabetic macular edema, BUN blood urea nitrogen, Cr creatinine, TG triglyceride, HDL high density lipoprotein, LDL low density lipoprotein, IOP intraocular pressure, HE hard exudate, HE1500 HE within 1500 µm from the fovea, CMT central macular thickness
*P value less than 0.05
^aBCVA, HE area and HE1500 area indicates the values observed in every visit of all the study participants. Because they were clustered data of the same person, generalized estimating equation (GEE) was used as statistical analysis
^bThe outcome variable was BCVA. The within-subject variable was the visit month. An autoregressive correlation was used as a working correlation

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