Table 4 Results of multivariate logistic regression analysis for determining the factors associated with presence of choroidal microvasculature dropout in all study subjects.

From: Nocturnal blood pressure dip and parapapillary choroidal microvasculature dropout in normal-tension glaucoma

 

Multivariate model (n = 88, all subjects)

OR

95% CI

VIF**

P

VF MD

0.786

0.681–0.906

1.914

0.001

cpVD

Dropped

 

3.748

 

cpRNFLT

Dropped

 

2.634

 

β-PPA area

6.282

0.910–43.369

1.179

0.062

Office SBP

Dropped

 

1.413

 

Office DBP

Dropped

 

1.531

 

Nighttime DBP trough

Dropped

 

3.474

 

Nighttime DBP dip “%”

1.051

1.004–1.101

5.417

0.034

Nighttime DBP dip “time” (h)

Dropped

 

2.376

 

Nighttime DBP dip “area” (mmHg h)

Dropped

 

4.969

 

Daytime IOP peak (sitting)

1.459

1.084–1.964

1.415

0.013

Daytime IOP range (sitting)

Dropped

 

1.704

 
  1. A backward elimination process was used to build a multivariate logistic regression model incorporating variables with P < 0.10 in univariate analysis. Statistically significant differences are shown in bold.
  2. OR odds ratio, CI confidence interval, VIF variance inflation factor, VF visual field, MD mean deviation, cpVD circumpapillary vessel density, cpRNFLT circumpapillary retinal nerve fibre layer thickness, β-PPA beta parapapillary atrophy, SBP systolic blood pressure, DBP diastolic blood pressure, IOP intraocular pressure.
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