Skip to main content

Table 1 Comparison of three independent models

From: Long-acting beta-agonists reduce mortality of patients with severe and very severe chronic obstructive pulmonary disease: a propensity score matching study

Model

1

2

3

Propensity score matched?

No

Yes

Yes

Any difference between cohorts?

Yes (not much)

No

No

Single- or multi-variable analysis?

Multi-

Single-

Multi-

Number of patients

591

492

492

Back to article page

Respiratory Research

ISSN: 1465-993X

Contact us