marginally significantp = 0.035
Of note, when we ran another model in which disease duration (marginally significant in the univariate analysis) was included, results did not change [for HLA-B-27; OR (95% CI) = 4.14 (1.11–15.43), p = 0.035; and for peripheral arthritis OR (95% CI) = 3.05 (1.10–8.42), p = 0.031].