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Table 4 Main objective analysis: Decrease in at least two points in CAT between the baseline and the final visit. Subgroup analysis: univariate and multivariate models

From: The evaluation of a remote support program on quality of life and evolution of disease in COPD patients with frequent exacerbations

Variable

Category

Univariate analysis

OR (CI 95 %)

Multivariate analysis

OR (CI 95 %)

Gender

Women

--------

 

Men

0.50 (0.17–1.48)

 

Age

 

0.97 (0.93–1.02)

 

Age

≤65 years

--------

 

>65 years

0.48 (0.20–1.11)

 

BMI

 

1.00 (0.92–1.08)

 

BMI classification

Normal (18.5–24.9)

--------

 

Overweight (25.0–29.9)

1.37 (0.49–3.82)

 

Obesity (≥30.0)

0.87 (0.31–2.49)

 

CAT

 

1.15 (1.07–1.24)

1.15 (1.07–1.24)

Time of evolution COPD (years)

 

0.96 (0.91–1.03)

 

Previous exacerbations

2–3

--------

 

≥4

0.42 (0.11–1.65)

 

FEV1(%) Postbronchodilation

 

1.01 (0.98–1.03)

 

GOLD stage

Mild-moderate

--------

 

Severe-very severe

0.96 (0.42–2.21)

 

Dyspnea

≤2

--------

 

>2

0.67 (0.27–1.63)

 

BODEx index

≤4

--------

 

>4

0.88 (0.38–2.07)

 

Minutes walking a day

<30

--------

 

30–60

1.48 (0.54–4.07)

 

>60

1.00 (0.36–2.78)

 

Morisky-Green questionnaire

Compliant

--------

 

Noncompliant

3.13 (1.19–8.19)

 

Significant cardiac comorbidity

No

--------

 

Yes

0.47 (0.17–1.36)

 

Cardiovascular risk

None

--------

 

Increased

0.92 (0.28–3.102)

 

High

0.89 (0.27–2.89)

 

Very/extremely high

1.05 (0.33–3.38)

 

Smoking status

Ex-smoker

--------

 

Smoker

1.98 (0.70–5.61)

 
  1. COPD chronic obstructive pulmonary disease, BMI body mass index, CAT COPD Assessment Test