Table 3

Interactions between prognostic factors and calendar periods in the German HIV-1 Seroconverter Cohort, 2010
Calendar periods P-value for interaction
pre-1997 1997-2007 2007-2010
HR† 95% CI HR† 95% CI HR† 95% CI
Sex, female 1.0 0.2-4.6 1.7 0.8 3.7 0.7 0.1 4.5 0.6509
Age (per 10years increase in age) 1.6 1.1-2.2 1.4 1.2 - 1.8 1.0 0.8 - 1.4 0.1287
HIV exposure category
men who have sex with men 1 1 1
Injecting drug users 0.8 0.3 - 2.6 1.9 0.9 4.1 1.4 0.2 11.1 0.5575
heterosexuals 0.2 0.04 - 1.4 1.1 0.5 - 2.4 0.5 0.1 - 2.1
people from high endemic country 2.7 0.6 12.7 2.1 0.7 - 7.0 1.6 0.2 13.8
Short HIV test interval* 1.4 1.0 1.9 1.1 0.7 - 1.8 1.7 1.0 2.8 0.3956

*defined as 3months between last negative and first positive HIV test, or with laboratory evidence of seroconversion.

† To ease the interpretation we show all hazard ratios in comparison to the MSM risk of the respective calendar period.

HR: Hazard Ratio; CI, confident interval.

Altmann et al.

Altmann et al. BMC Infectious Diseases 2012 12:94   doi:10.1186/1471-2334-12-94

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