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Table 4 Results from Cox Proportional hazards survival models on year 1 sample- Mortality follow-up of up to 15 years

From: Pre- and post-bronchodilator lung function as predictors of mortality in the Lung Health Study

 

Hazards Ratio

95% Confidence Interval

Sex

  

   Male

1.34

(1.12, 1.59)

   Female

1.00

 

Age

1.09

(1.07, 1.10)

Body Mass Index

1.00

(0.98, 1.03)

Education

  

   < 12 Years

1.29

(1.03, 1.61)

   12 Years

1.08

(0.90, 1.29)

   > 12 Years

1.00

 

Race

  

   White

1.00

 

   Black

2.13

(1.57, 2.88)

Smoking Status

  

   Former Smoker

0.64

(0.52, 0.79)

   Intermittent Smoker

0.89

(0.69, 1.15)

   Current Smoker

1.00

 

Randomization Group

  

   Intervention, Ipratroprium

0.92

(0.76, 1.12)

   Intervention, Placebo

0.89

(0.74, 1.09)

   Control

1.00

 

Stage (Pre-bronchodilator)*

  

   Stage 3 or 4

1.51

(0.75, 3.03)

   Stage 2

1.36

(0.95, 1.95)

   Stage 1

0.97

(0.65, 1.44)

   Restricted

1.12

(0.51, 2.48)

   Normal

1.00

 

Stage (Post-bronchodilator)*

  

   Stage 3 or 4

1.45

(0.41, 5.15)

   Stage 2

1.54

(1.20, 1.98)

   Stage 1

1.06

(0.80, 1.40)

   Restricted

1.63

(0.96, 2.75)

   Normal

1.00

 
  1. Results for post-bronchodilator lung function measurement is displayed without showing results for the other covariates.
  2. *Modified chronic obstructive pulmonary disease stage, as defined in methods