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Table 4 Factors related to HCV and HBV infections assessed by anti-HCV and anti-HBV

From: Prevalence and characterization of hepatitis B and C virus infections in a needle-sharing population in Northern China

  Anti-HCV and anti-HBc   Statistics P Multiple comparisons
Both positive (1) Positive anti-HCV (2) Positive anti-HBc (3) Both negative (4) 1&2 1&3 1&4
  (n = 256) (n = 60) (n = 321) (n = 215)      
Sex (male/female) 159/97 35/25 118/203 67/148 χ2 = 60.067 <0.001 0.589 <0.001 <0.001
Age (years) 56.00 ± 9.20 52.87 ± 9.95 51.15 ± 11.91 45.88 ± 14.74 F = 28.732 <0.001 0.157 <0.001 <0.001
No. of injections (median) 25 20 0 0 χ2 = 554.047 <0.001 0.033 <0.001 <0.001
Time from first injection (years, median) 26 25.5 0 0 χ2 = 315.472 <0.001 0.441 <0.001 <0.001
Anti-HBc S/CO ratio 0.006 1.63 0.006 1.80 χ2 = 589.908 <0.001 < 0.001 0.319 <0.001