“…The only factor found to influence high nil-control was HTLV-1 positivity (p<0.01). Previously reported factors influencing high nil-control included male gender, Behçet's syndrome, use of corticosteroids, hypoalbuminemia, and HTLV-1 positivity ( 6 , 17 ). Age, gender, corticosteroid use, hypoalbuminemia, and HTLV-1 positivity were chosen as explanatory variables.…”