Table 5

Results of all-cause mortality in patients with rheumatoid arthritis following hospitalisation for pneumonia according to disease activity and treatment with prednisolone

No prednisolone
+low CRP
No prednisolone
+high CRP
Prednisolone treatment
+low CRP
Prednisolone treatment
+high CRP
No of patients (N)6431042288
All-cause mortality at 30 days, n (%)4 (6.3)41 (13.2)1 (2.4)43 (14.9)
Crude HR for 30-day mortality1 (ref)2.20 (0.78 to 6.13)0.38 (0.04 to 3.37)2.48 (0.89 to 6.91)
Adjusted HR for 30-day mortality1 (ref)2.08 (0.74 to 5.81)0.36 (0.04 to 3.23)2.11 (0.76 to 5.88)
All-cause mortality at 90 days, n (%)5 (7.8)56 (18.1)1 (2.4)74 (25.7)
Crude HR for 90-day mortality1 (ref)2.46 (0.98 to 6.14)0.29 (0.03 to 2.55)3.57 (1.44 to 8.83)
Adjusted HR for 90-day mortality1 (ref)2.35 (0.94 to 5.87)0.29 (0.03 to 2.52)3.09 (1.25 to 7.65)
  • Data are presented as HRs with 95% CIs for all-cause mortality.

  • Treatment with prednisolone 0–3 months prior to admission. CRP levels were measured 30–90 days prior to pneumonia admission with a value of 8 mg/L used as a division between low and high CRP levels.

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

  • CRP, C reactive protein.