Proportion of patients in each category | β | W and Wref for each category | Regression unit for each category | Point score | |
---|---|---|---|---|---|
eGFR* | −0.012 | ||||
>90 mL/min | 0.014 | 105 mL/min=Wref | 0 | ||
60–89 mL/min | 0.128 | 74.5 mL/min | 0.397 | 1 | |
30–59 mL/min | 0.552 | 54.5 mL/min | 0.787 | 2 | |
<30 mL/min | 0.307 | 17.5 mL/min | 1.138 | 3 | |
Social support | |||||
Living alone or with spouse | 0.818 | 0.481 | 0=Wref | 0 | 0 |
Nursing home | 0.182 | 1 | 0.481 | 1 | |
Pulmonary disease† | 0.607 | ||||
No | 0.878 | 0=Wref | 0 | 0 | |
Yes | 0.122 | 1 | 0.607 | 2 | |
Malignant disease‡ | 0.506 | ||||
No | 0.834 | 0=Wref | 0 | 0 | |
Yes | 0.166 | 1 | 0.506 | 1 | |
Prescription of drug for peptic ulcer and GERD | 0.362 | ||||
No | 0.674 | 0=Wref | 0 | 0 | |
Yes | 0.326 | 1 | 0.362 | 1 | |
Prescription of opioid drug | 0.724 | ||||
No | 0.821 | 0=Wref | 0 | 0 | |
Yes | 0.179 | 1 | 0.724 | 2 | |
Prescription of non-TCA-antidepressant drug | −0.558 | ||||
No | 0.791 | 0=Wref | 0 | 0 | |
Yes | 0.209 | 1 | −0.558 | −2 | |
The average 1-year event-free rate=0.3215§ |
Regression unit for each category=β(W−Wref).
Point score=β(W−Wref)/B.
*Cockroft-Gault formula eGFR.
†Asthma or COPD.
‡Past or present.
§The Kaplan–Meier estimate of the event-free rate at the mean values of the risk factors.
COPD, chronic obstructive pulmonary disease; eGFR, estimated glomerular filtration rate; GERD, gastroesophageal reflux disease; TCA, tricyclic antidepressant.