Fig. 3

Distribution of each STI’syndromes by years and age groups (2007–2017) in Monastir. A: cervicitis: for age group of 20–39 years a positive trend(r = 0.501; b = 3.092; p < 0.001) was established. B: vaginitis: for age group of 20–39 years a positive trend (r = 0.128; b = 3.91; p < 0.001) was established. C: vaginosis: for age group of 20–39 years a positive trend(r = 0.384; b = 40.580; p < 0.001) was established. D: pelvic pain: for age group of 20–39 years a positive trend (r = 0.520; b = 15.087; p < 0.001) was established. E: Genital ulceration: for age group of 20–39 years a positive trend r = 0.495; b = 2.293; p < 0.001 was established. *p < 0.001