The Observation of Humoral Responses after Influenza Vaccination in Patients with Rheumatoid Arthritis Treated with Japanese Oriental (Kampo) Medicine: An Observational Study

Table 1

Characteristics at baseline of RA patients in this study.

	Total	Without MTX group*	With MTX group**
Age, mean± SD years	56.2±13.5	58.6±10.5	54.1±12.6
No. (%) female/No. (%) male	42 (93)/3 (7)	15 (94)/1 (6)	22 (92)/2 (8)
Duration of RA mean±SD years	12.2±14.1	13.5±15.6	10.9±11.6
MTX dosage, mean ± mg/week	5.1±3.8	0	7.6±2.5
PSL dosage, mean±SD mg/day	2.1±2.0	1.6±1.5	2.4±1.9
Taking DMARDs, No.
Bucillamine	1	1	0
Sulfasalazine	11	8	2
Tacllolimus	4	0	4
DAS28 CRP	3.2±1.1	2.9±1.0	3.3±1.4

*Without MTX group: patients treated with classical DMARDs alone. Patients treated with tacllolimus were excluded. **with MTX group: patients treated with MTX, but not biologics.