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Table 1 Logistic risk scores for hepatitis C antibody positive status in saliva (n = 98 female street sex-workers)

From: Prevalence and determinants of hepatitis C virus infection among female drug injecting sex workers in Glasgow

Determinant Total Hepatitis C antibodies in saliva Odds Ratio (95% confidence interval)
N (%) n (% of N) Univariate Multifactorial
Study group   98 (100%) 63 (64%)   
Age (years) (3 non-responses) 16–20 18 (19%) 7 (39%)   
21–25 34 (36%) 21 (62%) 1.08 (0.99–1.17) NS
26–30 29 (31%) 25 (86%)   
> 30 14 (15%) 9 (64%)   
Time since began prostitution (years) (2 non-responses) ≤ 1 40 (42%) 23 (58%) 1.00 (Baseline)  
2–5 32 (33%) 22 (69%) 1.63 (0.61–4.31) NS
> 5 24 (25%) 17 (71%) 1.80 (0.61–5.29)  
Time since onset of injecting drug use (years) (2 non-responses) Never injected 7 (7%) 1 (14%)   
< 2 30 (31%) 15 (50%)   
2–5 27 (28%) 18 (67%) 1.20 (1.06–1.35)* NS
6–10 19 (20%) 16 (84%)   
> 10 13 (14%) 12 (92%)   
Ever shared needles for injecting (4 non-responses) Yes 47 (50%) 40 (85%) 6.31 (2.31–17.29) 5.75 (2.01–16.46)
No 40 (43%) 19 (48%) 1.00 (Baseline) 1.00 (Baseline)
Never injected 7 (7%) 1 (14%) 0.18 (0.02–1.63) 0.26 (0.03–2.48)
Ever received help for drug problems (3 non-responses) Yes 68 (72%) 49 (72%) 3.22 (1.28–8.13) NS
No 27 (28%) 12 (44%) 1.00 (Baseline)  
Number of times in prison (16 non-responses) None 33 (40%) 16 (49%) 1.00 (Baseline) 1.00 (Baseline)
1–5 times 26 (32%) 14 (54%) 1.24 (0.44–3.47) 1.27 (0.39–4.14)
> 5 times 23 (28%) 21 (91%) 11.16 (2.26–55.16) 7.30 (1.35–39.46)
  1. ‡ Results in bold are statistically significant at the 5% level.
  2. * Time since onset of injecting drug use was entered as a continuous variable in the regression analysis, where non-injectors were coded as missing values.
  3. NS indicates not included in the multifactorial model, because of lack of significance.