Prevalence, Causes, and Risk Factors of Presenting Visual Impairment and Presenting Blindness in Adults Presenting to an Examination Center in Suzhou, China

Table 4

Logistic regression analysis of associations of bilateral vision Impairment (20/400 ≤ presenting visual acuity < 20/60, better eye).

Risk factors	No. of subjects			Multivariate analysis	Univariate analysis
	Below normal	Normal range	Above normal	value	OR	95% CI of OR	value
Age	—	—	—	≤0.001	1.713	1.63–1.80	≤0.001
BMI	47	355	295	≤0.001	0.934	0.89–0.98	≤0.001
MAP	12	542	143	≤0.001	1.008	0.96–1.06	0.016
Arterial stiffness index	—	619	78	≤0.001	0.875	0.83–0.92	0.015
Triglycerides	1	559	137	≤0.001	1.045	0.99–1.10	0.915
Hemoglobin	195	491	11	≤0.001	0.987	0.94–1.04	≤0.001
FBG	0	562	135	≤0.001	1.058	1.01–1.11	0.042
Serum creatinine	128	555	14	0.644	—	—	—
Blood urea nitrogen	34	632	31	≤0.001	1.045	0.99–1.10	0.091
Uric acid	37	564	96	≤0.001	0.999	0.95–1.05	0.064
SII	—	278	419	0.037	1.000	0.95–1.05	0.006
Globulin	0	687	10	≤0.001	1.031	0.98–1.08	0.002

Below normal: the number of bilateral vision impairment subjects with low levels of the variable being analyzed. Normal range: the number of bilateral vision impairment subjects within the normal range for the variable being analyzed. Above normal: the number of bilateral vision impairment subjects with a high level of the analyzed variable. OR: odds ratio; 95% CI: 95% confidence interval; BMI: body mass index; MAP: mean arterial blood pressure; FBG: fasting blood glucose; SII: systemic immune-inflammation index.