Table 2 Results of multiple logistic regression.

From: Risk factors for undergoing surgery in patients with newly diagnosed open-angle glaucoma

 

Simple Logistic regression

Multiple logistic regression

Odds Ratio

95%

CI

P-value

Adjusted OR

95%

CI

P-value

Prescribed glaucoma eyedrops

None

1.00

   

1.00

   

PG

8.67

3.12

24.03

 < 0.001

8.69

3.12

24.16

 < 0.001

Non-PG

9.60

3.49

26.40

 < 0.001

8.78

3.18

24.28

 < 0.001

Two or more

35.33

12.93

96.49

 < 0.001

30.30

10.95

83.84

 < 0.001

Oral CAI intake

No

1.00

   

1.00

   

Yes

3.64

2.59

5.12

 < 0.001

1.79

1.23

2.61

0.003

Age group

 < 45

1.19

0.70

2.02

0.523

1.28

0.75

2.21

0.367

45–54

1.00

   

1.00

   

55–64

1.84

1.15

2.94

0.010

1.71

1.06

2.76

0.027

65 + 

1.92

1.24

2.97

0.004

1.72

1.10

2.70

0.019

Sex

Men

1.00

   

1.00

   

Women

1.28

0.97

1.68

0.079

1.46

1.10

1.94

0.009

Income

Medical aids

1.00

   

1.00

   

Low

1.38

0.74

2.61

0.314

1.81

0.94

3.46

0.075

Middle

1.84

1.03

3.29

0.039

2.36

1.30

4.28

0.005

High

1.36

0.77

2.42

0.287

1.86

1.03

3.35

0.038

Residential area

Capital area

1.00

   

1.00

   

Metropolitan area

1.64

1.18

2.28

0.003

1.61

1.14

2.26

0.006

Rural area

1.28

0.93

1.77

0.128

1.13

0.81

1.58

0.459

Disability

No

1.00

       

Yes

0.66

0.40

1.09

0.101

    

Hypertension Hx

No

1.00

       

Yes

0.97

0.66

1.43

0.890

    

Diabetes Hx

No

1.00

       

Yes

0.77

0.53

1.11

0.164

    

Charlson Comorbidity Index

0

1.00

       

1

1.01

0.75

1.36

0.962

    

2

0.90

0.60

1.36

0.614

    

3 + 

0.93

0.51

1.67

0.798

    
  1. CI: confidence interval; OR: odds ratio; PG: Prostaglandin analogue; CAI: Carbonic anhydrase inhibitor; Hx: History, *P-values were calculated using logistic regression. Indicated in bold type, P < 0.05 indicates statistical significance.
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