Table 1.

Patient characteristics

CharacteristicValue
n155
Sex (no. of males/no. of females)65/90
Age (yr) (mean ± SD)52 ± 16
No. (%) of patients of >50 yr88 (57)
No. (%) of patients with underlying rheumatic disease
    Rheumatoid arthritis74 (48)
    Psoriatic arthritis35 (23)
    Ankylosing spondylitis31 (20)
    Other spondyloarthropathies13 (8)
    Other diseases2 (1)
No. (%) of patients receiving immunosuppressive therapy
    DMARDs and/or steroids98 (63)
    DMARDs80 (52)
    Steroids66 (43)
        Daily steroid dose (mg) (mean ± SD [median])6.8 ± 3.2 (5)
        Duration of steroid treatment (mo) (mean ± SD [median])25.7 ± 37.6 (12)
No. (%) of patients with comorbid conditions15 (21.4)
No. (%) of patients with BCG vaccination81 (76)
No. (%) of patients with history of TB exposure or chest X-ray findings consistent with old TB16 (15)