Table 2

Results of 30-day and 90-day all-cause mortality following hospitalisation for pneumonia in patients with and without rheumatoid arthritis (RA)

All pneumonia patientsPneumonia patients with chronic lung diseasePneumonia patients without chronic lung disease
RANon-RARANon-RARANon-RA
N122051 357291 (23.9)10 428 (20.3)929 (76.1)40 914 (79.7)
30-day mortality165 (13.5%)6521 (12.7%)37 (12.7)1335 (12.8)128 (13.8)5186 (12.7)
90-day mortality243 (19.9%)9679 (18.9%)62 (21.3)2118 (20.3)181 (19.5)7561 (18.5)
Crude 30-day HR1.07 (0.92 to 1.25)1.00 (ref)1.00 (0.72 to 1.39)1.00 (ref)1.10 (0.92 to 1.30)1.00 (ref)
Adjusted 30-day HR*1.06 (0.91 to 1.24)1.00 (ref)1.04 (0.75 to 1.46)1.00 (ref)1.07 (0.90 to 1.28)1.00 (ref)
Crude 90-day HR1.07 (0.94 to 1.21)1.00 (ref)1.06 (0.82 to 1.36)1.00 (ref)1.07 (0.92 to 1.23)1.00 (ref)
Adjusted 90-day HR*1.05 (0.92 to 1.19)1.00 (ref)1.11 (0.86 to 1.42)1.00 (ref)1.03 (0.89 to 1.19)1.00 (ref)
  • HRs with 95% CI were calculated using a Cox proportional hazards model.

  • *Adjusted for sex, age, level of comorbidity, alcoholism and antibiotic use before admission.