. Author manuscript; available in PMC: 2022 Mar 1.

Published in final edited form as: Ophthalmol Glaucoma. 2020 Sep 12;4(2):139–148. doi: 10.1016/j.ogla.2020.09.005

Table 2.

Univariate and multivariate Cox proportional hazards model analysis of risk factors in patients undergoing cataract surgery with iStent

Variable (reference)	Univariate			Multivariate
Variable (reference)	Hazard Ratio	Confidence interval	p value^a	Hazard Ratio	Confidence interval	p value^a
Age (1 year)	0.99	0.92–1.07	0.88	1.04	0.98–1.10	0.22
Sex (female)	1.60	0.60–4.27	0.35
Race (Caucasian)	3.65	1.29–10.33	0.01	8.75	2.80–27.31	0.0002
Pre-operative IOP (1 mmHg)	1.09	0.95–1.26	0.22	1.06	0.88–1.29	0.52
Pre-operative number of medications (1 medication)	0.58	0.36–0.95	0.03	0.63	0.33–1.21	0.16
Selective laser trabeculoplasty	0.40	0.13–1.21	0.10
Corneal curvature (1 diopter)	0.86	0.68–1.09	0.22
Axial length (1 mm)	1.29	0.93–1.78	0.13	1.61	1.05–2.47	0.03
Anterior chamber depth (1 mm)	1.53	0.52–4.53	0.45
Hypertension	1.44	0.45–4.63	0.54
Diabetes	1.77	0.60–5.27	0.30
Hyperlipidemia	1.37	0.48–3.96	0.56

p values obtained using Cox proportional hazards model.