The prevalence of allergic rhinitis caused by cotton dust followed gender Gender Yarn Factory1 Garment Company2 Total p1&2 n% n% n% Female3 45 20, 9 50 9, 4 95 12, 7 <0, 001 Male4 36 23, 5 24 13, 1 60 17, 9 0, 013 Total 81 22, 0 74 10, 4 155 14, 3 <0, 001 p3&4 0, 553 0, 127 0, 026 The prevalence of allergic rhinitis caused by cotton dust in female workers was 12.7%, lower than that in male workers (17.9%), the difference was statistically significant (p <0.05).