Table 2 Multivariable analyses of factors associated with recording RA in death certificates (n = 326)
From: Mortality in Rheumatoid Arthritis (RA): factors associated with recording RA on death certificates
Independent variable | Odds ratio (OR) | 95 % CI | P-value |
|---|---|---|---|
Age | 0.97 | 0.94, 1.00 | 0.06 |
Sex (Female==1) | 0.78 | 0.41, 1.51 | 0.5 |
Non-Hispanic White ethnicity | 1.1 | 0.56, 2.19 | 0.8 |
Health Insurance (yes==1, no==0) | 0.57 | 0.15, 2.10 | 0.4 |
Nam & Powers Score | 0.98 | 0.97, 1.00 | 0.1 |
Number of Deformities (0–9) | 1.0 | REFERENT | – |
Number of Deformities (10–21) | 1.01 | 0.45, 2.33 | 0.9 |
Number of Deformities (22–28) | 2.48 | 1.1, 5.6 | 0.03 |
Steinbrocker Functional Class | 1.0 | REFERENT | – |
Class II | 1.53 | 0.18, 13.4 | 0.7 |
Class III | 2.13 | 0.23, 19.4 | 0.5 |
Class IV | 1.90 | 0.19, 18.7 | 0.6 |
Charlson Comorbidity (range 1–3) | 1.0 | REFERENT | – |
Charlson Comorbidity (range 4–5) | 0.82 | 0.40, 1.68 | 0.6 |
Charlson Comorbidity (range 6–14) | 0.32 | 0.14, 0.75 | 0.008 |
Signed by Certified Physician | 4.97 | 1.39, 17.7 | 0.013 |