Table 3 Estimated beta coefficients and their standard errors (SE) for the final Cox proportional hazards model
From: Predicting COPD 1-year mortality using prognostic predictors routinely measured in primary care
| Â | Coefficient | SE | p value |
|---|---|---|---|
Continuous variables | |||
 Age | 0.040 | 0.004 | < 0.0001 |
 BMI | − 0.047 | 0.006 | < 0.0001 |
 Creatinine | 0.001 | 0.001 | < 0.05 |
 Haemoglobin | − 0.006 | 0.001 | < 0.0001 |
 FEV1 | − 0.433 | 0.078 | < 0.0001 |
Categorical variables | |||
 Asthma | − 0.155 | 0.057 | < 0.01 |
 Atrial fibrillation | 0.450 | 0.077 | < 0.0001 |
 No CKD | − 0.314 | 0.143 | < 0.05 |
 Current smoker | 0.179 | 0.061 | < 0.05 |
 Dementia | 0.391 | 0.137 | < 0.01 |
 Female | − 0.331 | 0.069 | < 0.0001 |
 Hospitalisations | |||
  1–2/year | 0.517 | 0.081 | < 0.0001 |
  > 2/year | 0.980 | 0.181 | < 0.0001 |
 Low albumin | 0.531 | 0.089 | < 0.0001 |
 Lung cancer | 1.063 | 0.135 | < 0.0001 |
 Lung fibrosis | 0.794 | 0.219 | < 0.0001 |
 MRC | |||
  2 | 0.577 | 0.130 | < 0.0001 |
  3 | 0.890 | 0.133 | < 0.0001 |
  4 | 1.599 | 0.142 | < 0.0001 |
 Platelets | |||
  Normal | − 0.394 | 0.131 | < 0.01 |
  High | − 0.208 | 0.161 | > 0.05 |
 Stroke | 0.235 | 0.097 | < 0.05 |