Contributions
Abstract: P315
Type: Poster
Abstract Category: Clinical aspects of MS - Epidemiology
Background: Several reports from Iran have indicated a rise in MS incidence and prevalence in recent years. A retrospective population-based study was conducted to evaluate MS incidence and prevalence in Tehran province.
Methods: Iranian MS Society records were studied to obtain annual incidence data of patients from 1999 to 2015. The age-adjusted prevalence rates were calculated based on year of diagnosis and the 2000-2025 WHO standard population. We used linear regression and Mann-Kendall trend test to study prevalence and incidence rate.
Results: On the prevalence day 16447 patients lived in Tehran, totally 24.6% of patients were male and 75.4% were female. The male to female ratio during 1999-2015 is 1: 3.06. The point prevalence of MS in 2015 is 115.94 and incidence of MS in 2013 is 6.37 per 100,000 populations.
The age standardized MS prevalence rate for male was 63.23 per 100000 and for female was 197.21. Mean age at disease onset is 28.36 years old with a minimum 3 years and maximum of 87 years old. Mean age at disease onset for male patients is 29.01 years old and for female patients is 28.15 years old with Mode of 25.0 years old. Based on logistic regression analysis, age groups are significantly associated with MS (P < 0.05), age group under18 years old (OR ＝ 1.757; 95％ CI ＝1.358 - 2.237); and 18-27 years old (OR ＝ 1.557; 95％ CI ＝1.247− 1.945).
Conclusions: A significantly increasing trend in MS prevalence was observed via Join point regression analysis in different years during last decade. According to this study during the last 16 years, Tehran is amongst regions with the highest prevalence of MS in Asia.
Disclosure: nothing to disclose
Abstract: P315
Type: Poster
Abstract Category: Clinical aspects of MS - Epidemiology
Background: Several reports from Iran have indicated a rise in MS incidence and prevalence in recent years. A retrospective population-based study was conducted to evaluate MS incidence and prevalence in Tehran province.
Methods: Iranian MS Society records were studied to obtain annual incidence data of patients from 1999 to 2015. The age-adjusted prevalence rates were calculated based on year of diagnosis and the 2000-2025 WHO standard population. We used linear regression and Mann-Kendall trend test to study prevalence and incidence rate.
Results: On the prevalence day 16447 patients lived in Tehran, totally 24.6% of patients were male and 75.4% were female. The male to female ratio during 1999-2015 is 1: 3.06. The point prevalence of MS in 2015 is 115.94 and incidence of MS in 2013 is 6.37 per 100,000 populations.
The age standardized MS prevalence rate for male was 63.23 per 100000 and for female was 197.21. Mean age at disease onset is 28.36 years old with a minimum 3 years and maximum of 87 years old. Mean age at disease onset for male patients is 29.01 years old and for female patients is 28.15 years old with Mode of 25.0 years old. Based on logistic regression analysis, age groups are significantly associated with MS (P < 0.05), age group under18 years old (OR ＝ 1.757; 95％ CI ＝1.358 - 2.237); and 18-27 years old (OR ＝ 1.557; 95％ CI ＝1.247− 1.945).
Conclusions: A significantly increasing trend in MS prevalence was observed via Join point regression analysis in different years during last decade. According to this study during the last 16 years, Tehran is amongst regions with the highest prevalence of MS in Asia.
Disclosure: nothing to disclose