The prevalence is higher in age groups 45 years and older, especially two age groups 55 - 64 (40.5%) and 65 (27.8%) In terms of prognostic factors, the study showed in the age group < 65 years old, the bad progression rate was 27.4%, in the age group ≥ 65, the bad progression rate was 64.9%, so in the age group ≥ 65 years, the prognosis was worse, p < 0, 01, statistically significant difference.