Selected article for: "active infection and crude prevalence"
Author: Wu, Xiaobing; Guan, Yang; Ye, Jianbin; Fu, Hanlin; Zhang, Chunlai; Lan, Lina; Wu, Fengxin; Tang, Fen; Wang, Feng; Cai, Yumao; Yu, Weiye; Feng, Tiejian
Title: Association between syphilis seroprevalence and age among blood donors in Southern China: an observational study from 2014 to 2017
  • Document date: 2019_11_2
    • ID: ubnv0fdw_35
    Snippet: Primary outcomes of interest were the prevalence of syphilis infection and active infection among all blood donors in different age groups. There were four age groups, <25 years, 25-34 years, 35-44 years, and ≥45 years, fully considering the age coverage of blood donors and age classification in previous studies. 15, 16 We calculated the crude prevalence and its 95% confidence interval (CI). The chi-squared (χ 2 ) test for trend was used to as.....
    Document: Primary outcomes of interest were the prevalence of syphilis infection and active infection among all blood donors in different age groups. There were four age groups, <25 years, 25-34 years, 35-44 years, and ≥45 years, fully considering the age coverage of blood donors and age classification in previous studies. 15, 16 We calculated the crude prevalence and its 95% confidence interval (CI). The chi-squared (χ 2 ) test for trend was used to assess the prevalence difference among age groups. Odds ratios (ORs) and their 95% CIs were calculated when comparing the risk of syphilis infection and active infection between the ≥ 45 years age group and other age groups. Line graphs were used to describe the changes in prevalence for both syphilis infection and active infection among the age groups after stratification by gender and year of donation.

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