Box plots show 5th/95th percentiles of antibody response, that is, ratio of postvaccination/prevaccination antibody levels for 6B and 23F in different treatment groups. Statistically significant differences in antibody response for each serotype when two different treatment groups were compared (Mann-Whitney U-test) are indicated. MTX, methotrexate; Spondylart, spondyloarthritis; NSAID, non-steroidal anti-inflammatory drug.
Crnkic Kapetanovic et al. Arthritis Research & Therapy 2013 15:R171 doi:10.1186/ar4358