Selected article for: "CI 95 confidence interval and confidence interval"
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_68
    Snippet: Primary outcomes of interest were the prevalence of syphilis seropositivity 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 .....
    Document: Primary outcomes of interest were the prevalence of syphilis seropositivity 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 difference in prevalence among age groups.

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