Table 1. Factors of HCV testing (GLM, Poisson) and factors of HCV positivity (logistic regression).
| Screening per subpopulation | Risk factors | ||||
| Number of tests | RR adjusteda (95%CI) | Positives (%) | OR adjusteda (95%CI) | ||
| Sex | Male | 13,062 | 1.18 (1.17–1.19)** | 573 (4.4) | 1.71 (1.46–2.00)** |
| Female | 10,738 | 1.00 | 250 (2.3) | 1.00 | |
| Age | 18–25 | 2,055 | 1.00 | 21 (1.0) | 1.00 |
| 26–35 | 4,182 | 1.69 (1.63–1.76)** | 158 (3.8) | 4.08 (2.57–6.47)** | |
| 36–45 | 4,614 | 1.84 (1.77–1.90)** | 354 (7.7) | 8.95 (5.72–13.99)** | |
| 46–55 | 4,057 | 1.64 (1.58–1.70)** | 217 (5.3) | 6.40 (4.06–10.10)** | |
| 56–65 | 3,606 | 1.64 (1.58–1.69)* | 47 (1.3) | 1.75 (1.03–2.95)* | |
| >65 | 5,286 | 2.84 (2.75–2.95)** | 26 (0.5) | 0.64 (0.36–1.14) | |
| Care provider | GP | 4,470 | 1.00 | 160 (3.6) | 1.00 |
| Specialist | 16,515 | 2.66 (2.61–2.72)** | 390 (2.4) | 0.90 (0.74–1.09) | |
| Otherb | 2,815 | 0.68 (0.65–0.71)** | 273 (9.7) | 3.13 (2.54–3.86)** | |
| SES % on | Low SES | 13,338 | 2.24 (2.17–2.31)** | 609 (4.6) | 1.76 (1.33–2.29)** |
| social welfare | Middle SES | 5,705 | 1.11 (1.07–1.15)** | 124 (2.2) | 0.95 (0.70–1.27) |
| High SES | 4,757 | 1.00 | 90 (1.9) | 1.00 | |
| SES by property | Low SES | 12,664 | 2.53 (2.44–2.63)** | 542 (4.3) | 1.50 (1.11–2.04)** |
| value | Middle SES | 7,686 | 1.33 (1.28–1.38)** | 218 (2.8) | 1.37 (1.01–1.86)* |
| High SES | 3,450 | 1.00 | 63 (1.8) | 1.00 | |
Laboratory surveillance data, South Limburg, the Netherlands, 2002–2008.
a
Adjusted for sex, age, care provider, test year, SES by percentage of people on social welfare, and SES by mean property value. * p<0.05 **p<0.01.
b
Non-hospital, non-GP test providers.
GP: general practitioner; HCV: hepatitis C virus; RR: Relative Risk; OR: Odds Ratio; SES: Socio-economic status.