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Table 3 Multiple logistic regression analyses of factors associated with occurrence of hepatitis C virus (HCV) testing, positive HCV antibodies, and viremic HCV infection

From: Prevalence of Viremic hepatitis C, hepatitis B, and HIV infection, and vaccination status among prisoners in Stockholm County

Predictor variableOutcome variableaOR (95% CI)P-value
 Occurrence of HCV testing  
Tested for anti-HCV
n (%)
Not tested for anti-HCV
n (%)
Sexa
 Women, n = 4427 (61.4)17 (38.6)1.00 
 Men, n = 623444 (71.3)179 (28.7)1.22 (0.62–2.40)0.57
Agea (per year)  0.98 (0.96–0.99)0.002
Security classa   < 0.001
 1, n = 293238 (81.2)55 (18.8)1.00 
 2, n = 281189 (67.3)92 (32.7)0.51 (0.34–0.77) 
 3, n = 9344 (47.3)49 (52.7)0.24 (0.14–0.39) 
 Anti-HCV positivity  
Anti-HCV+Anti-HCV-
Sexb
 Women, n = 279 (33.3)18 (66.7)1.00 
 Men, n = 44471 (16.0)373 (84.0)0.62 (0.24–1.61)0.33
Ageb (per year)  1.05 (1.03–1.07)< 0.001
Security classb   0.13
 1, n = 23837 (15.5)201 (84.5)1.00 
 2, n = 18939 (20.6)150 (79.4)1.21 (0.70–2.08) 
 3, n = 444 (9.1)40 (90.9)0.38 (0.12–1.16) 
 Viremic infection  
HCV RNA+HCV RNA-
Sexc
 Women, n = 263 (11.5)23 (88.5)1.00 
 Men, n = 43650 (11.5)386 (88.5)1.79 (0.47–6.85)0.39
Agec (per year)  1.04 (1.02–1.07)0.001
Security classc   0.33
 1, n = 23524 (10.2)211 (89.8)1.00 
 2, n = 18325 (13.7)158 (86.3)1.41 (0.76–2.64) 
 3, n = 444 (9.1)40 (90.9)0.66 (0.21–2.07) 
  1. aAmong all prisoners (n = 667)
  2. bAmong tested for anti-HCV (n = 471)
  3. cAmong tested for anti-HCV excluding nine persons who were not tested for HCV RNA among anti-HCV+ (n = 462)
  4. Abbreviations: HCV Hepatitis C virus, anti-HCV Hepatitis C virus antibodies, anti-HCV+ Hepatitis C virus antibodies positive, HCV RNA+ Hepatitis C virus RNA positive, HCV RNA- Hepatitis C virus RNA negative, aOR adjusted odds ratio, CI Confidence interval