Table 3

The univariate and multivariate analysis of relationship between demographic and biochemical characteristics and average RNFL thickness

Variables	Univariate analysis			Multivariate
Variables	B	SE	P value	B	SE	P value
Age (years)	−0.233	0.016	<0.001	−0.260	0.024	<0.001
Gender (female vs male)	2.043	0.346	<0.001	1.772	0.495	<0.001
High educational level	−0.576	0.973	0.554
Smoking status	1.369	0.394	<0.001	−0.319	0.552	0.563
Body mass index (kg/m²)*
<21	−1.531	0.643	0.017	−0.822	0.690	0.234
27–30	0.745	0.426	0.080	0.668	0.461	0.147
≥30	1.144	0.537	0.033	1.403	0.593	0.018
Diastolic >140 (mm Hg)	2.287	7.222	0.751
Systolic >90 (mm Hg)	7.903	5.897	0.180
Diabetes	2.888	0.929	0.002	2.576	0.992	0.009
HbA1c (%)	−0.412	0.516	0.425
HDL (normal vs abnormal)	0.028	0.383	0.942
LDL (normal vs abnormal)	0.414	0.368	0.260
TG (normal vs abnormal)	0.165	0.398	0.678
Coronary heart disease	2.248	0.677	<0.001	0.562	0.706	0.426
Cataract extraction	−4.591	1.419	0.001	−5.845	1.633	<0.001
Intraocular pressure (mm Hg)	−0.110	0.054	0.043	−0.157	0.059	0.007
Spherical equivalent	0.734	0.076	<0.001	0.862	0.108	<0.001
Axial length	−0.513	0.112	<0.001	−0.240	0.121	0.048
BCVA (logMAR)	−4.270	0.593	<0.001	−0.703	0.724	0.331

Values with statistical significance are shown in boldface.
*21-27 (kg/m²) was set as the reference category.
BCVA, best-corrected visual acuity; HbA1c, glycosylated hemoglobin; HDL, high density lipoprotein; LDL, Low Density Lipoprotein; RNFL, retinal nerve fibre layer; TG, triglyceride.