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Table 3 Bivariate and multivariate analyses of HCV and HSV-2 according to sociodemographic and sexual health factors

From: Blood-borne and sexually transmitted infections: a cross-sectional study in a Swiss prison

  HCV HSV-2
Variable c n = 17 p-value bivariate model p-value multivariate modeld n = 35 p-value bivariate model p-value multivariate modeld
V-Cramer OR V-Cramer ORd
Region of origin
  European countries 14/129 (10.9%) .003 a   12/79 (15.2%) .028 a  
  Other regions 3/144 (2.0%) 0.181   23/77 (29.8%) 0.176  
Age
  <  28 years 5/131 (3.8%) .113a   10/67 (14.9%) .051a .019
  ≥ 28 years 12/142 (8.5%)   25/89 (28.1%) 0.156 2.63
Education level
  Secondary school not completed 1/74 (1.4%) .047 b   15/39 (38.5%) .009 a .034
  Secondary school completed 16/191 (8.4%) 0.129   20,112 (17.9%) 0.214 3.21
Condom use for sexual protection
  Always 3/87 (3.5%) .165a   16/63 (25.4%) .585a  
  Sometimes or never 14/177 (7.9%)   19/88 (21.6%)  
Sexual intercourse with sex workers
  Never 4/125 (3.2%) .044 a   13/65 (20%) .421a  
  At least once 13/140 (9.3%) 0.124   22/86 (25.6%)  
Sexual orientation
  Homosexual/bisexual 1/6 (16.7%) .662b   0/3 (0%) .999b  
  Heterosexual 16/259 (6.2%)   35/148 (23.6%)  
Number of sexual partners
  0 to 5 3/71 (4.2%) .369a   8/44 (18.2%) .450a  
  6 or more 14/192 (7.3%)   25/105 (23.8%)  
Injection drug use
  Yes 13/16 (81.2%) <.001 b <.001 0/7 (0%) .138a  
  No 4/253 (1.6%) 0.774 227.00 35/145 (24.1%)  
History of genital ulcers
  Yes 2/28 (7.1%) .695b   7/15 (46.7%) .045 b  
  No 15/239 (6.3%)   28/138 (20.3%) 0.187  
  1. 95% CI: 95% confidence interval, OR: odd-ratio
  2. aChi square tests and b Fisher exact tests were performed with Cramers’ V as effect size
  3. cNo statistically significant association between HCV or HSV-2 and socio-economic status, condom use, same-sex sexual activities, and number of sexual partners lifetime (p > .05). No inferential statistics were performed on HIV and syphilis because of the low prevalence rate of infected people living in detention
  4. Significant p-values and associated prevalence rates are highlighted in bold
  5. dMultiple logistic stepwise regressions with HCV and HSV-2 as dependent variables were performed. p-values of Wald chi-square and odd-ratio with the second category of each variable being the reference category are reported