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Table 1 The weighted prevalence of CT and NG in participants 18–49 years of age in Shandong, China

From: Prevalence, risk factors, and medical costs of Chlamydia trachomatis infections in Shandong Province, China: a population-based, cross-sectional study

  Male [n, %(95%CI)] Female [n, %(95%CI)] Denominatora (unweighted, weightedb)
CT NG CT NG Male Female
Age(years)
 18–24 11, 4.3% (0.0–8.8) 0, 0.0% 7, 3.2% (0.4–6.1) 1, 0.2% (0.0–0.6) 253, 851 194, 825
 25–29 18, 2.3% (0.5–4.1) 0, 0.0% 24, 2.9% (1.9–3.8) 0, 0.0% 780, 496 914, 499
 30–34 13, 2.8% (1.3–4.2) 0, 0.0% 20, 3.5% (2.6–4.4) 1, 0.1% (0.0–0.2) 500, 469 555, 461
 35–39 13, 2.7% (1.1–4.2) 0, 0.0% 8, 1.4% (0.4–2.4) 1, 0.1% (0.0–0.3) 557, 567 588, 559
 40–44 15, 2.4% (1.3–3.5) 0, 0.0% 14, 1.5% (0.4–2.6) 1, 0.1% (0.0–0.4) 713, 667 735, 659
 45–49 7, 0.8% (0.2–1.3) 1, 0.2% (0.0–0.5) 17, 1.6% (0.9–2.4) 1, 0.1% (0.0–0.3) 692, 572 722, 578
Region
 Northwest 4, 3.0% (0.0–7.7) 0, 0.0% 7, 1.6% (0.6–2.5) 0, 0.0% 338, 390 348, 356
 Middle 28, 3.0% (1.1–4.9) 0, 0.0% 17, 2.0% (0.0–4.6) 0, 0.0% 895, 941 907, 851
 South 29, 2.7% (1.7–3.8) 1, 0.1% (0.0–0.2) 46, 3.0% (2.2–3.9) 2, 0.1% (0.0–0.5) 1489, 1456 1567, 1479
 East 16, 2.0% (1.3–2.7) 0, 0.0% 20, 1.8% (1.1–2.5) 3, 0.2% (0.0–0.5) 773, 835 886, 895
Total 77, 2.7% (1.6–3.8) 1, 0.03% (0.0–0.1) 90, 2.3% (1.5–3.2) 5, 0.1% (0.0–0.3) 3495, 3622 3708, 3581
  1. Abbreviations: CI confidence interval, CT chlamydia trachomatis, NG neisseria gonorrhoeae
  2. aDenominator was participants with sex experience and a urine test result
  3. bSelection probability weighting, non-response weighting, and post-stratification weighting were applied to calculate the weighted denominator