Table 3

Relative risk (hazard ratio [HR]) of being registered with HIV in the Danish National Hospital Registry according to characteristics and treatment centre.


Crude HR (95% CI)
Adjusted HR (95% CI)

Male gender (reference)
1
1
Female gender
1.05 (0.95–1.16)
1.15 (1.02–1.30)
Caucasian (reference)
1
1
Non-Caucasian
1.02 (0.92–1.13)
0.93 (0.82–1.05)
Age > 40 years (vs. <= 40 years)
1.12 (1.02–1.22)
1.07 (0.97–1.18)
CD4 count < 200 cells/μl (vs. ≥ 200 cell/μl)
1.45 (1.32–1.59)
1.38 (1.25–1.52)
Viral load > 100,000 copies/ml (vs. ≤ 100,000 copies/ml)
1.32 (1.21–1.45)
1.14 (1.03–1.26)
Heterosexual (reference)
1
1
Homosexual
1.01 (0.92–1.11)
1.04 (0.93–1.17)
Intravenous drug use
0.85 (0.72–1.00)
0.87 (0.73–1.04)
Other/unknown
1.05 (0.86–1.27)
1.07 (0.88–1.31)
Diagnosed before year 2000 (reference)
1
1
Diagnosed after 1 January 2000
1.40 (1.28–1.53)
1.40 (1.28–1.53)
Centre


     Center 1
1
1
     Center 2
1.03 (0.93–1.14)
1.06 (0.95–1.17)
     Center 3
1.08 (0.91–1.27)
1.12 (0.94–1.32)
     Center 4
0.87 (0.75–1.02)
0.91 (0.78–1.07)
     Center 5–8*
0.99 (0.86–1.15)
0.98 (0.83–1.14)

* The four smallest centers in the Danish HIV Cohort Study (DHCS)

Obel et al. BMC Medical Research Methodology 2008 8:25   doi:10.1186/1471-2288-8-25