Table 1

Description of the German HIV-1 Seroconverter Cohort by the end of 2010
Calendar year of seroconversion
Pre-1997 1997-2000 2001-2004 2005-2006 2007-2010 Overall
Sex, female, n (%) 32 (15) 13 (7.0) 32 (5.6) 29 (6.2) 31 (4.2) 137 (6.3)
Age at seroconversion, (year) [median (IQR)] 30 (2638) 32 (2736) 33 (2738) 33 (2840) 33 (2740) 33 (2739)
HIV exposure category [n (%)]
men who have sex with men 139 (65.0) 152 (82.6) 500 (88.2) 406 (87.7) 641 (87.6) 1838 (85.0)
Injecting drug users 32 (15.0) 5 (2.7) 10 (1.8) 5 (1.1) 3 (0.4) 55 (2.6)
heterosexuals 34 (15.9) 16 (8.7) 40 (7.1) 41 (8.8) 64 (8.8) 195 (9.0)
people from high endemic country 6 (2.8) 6 (3.2) 9 (1.6) 5 (1.1) 7 (1.0) 33 (1.5)
others* 0 (0) 2 (1.1) 2 (0.4) 1 (0.2) 4 (0.6) 9 (0.4)
unknown 3 (1.4) 3 (1.6) 6 (1.1) 7 (1.5) 13 (1.8) 32 (1.5)
Short HIV test interval , n (%) 33 (15.4) 53 (28.7) 206 (36.3) 208 (44.7) 401 (54.9) 901 (41.7)
Seroconverters, n (Follow up) 214 (520) 185 (837) 567 (1201) 465 (1259) 731 (5090) 2162 (8906)
AIDS events, n, (rate) 36 (6.9) 22 (2.6) 23 (1.9) 47 (3.7) 68 (1.3) 196 (2.2)
Pre-AIDS mortality, n (rate) NA 5 (0.6) 4 (0.3) 4 (0.3) 14 (0.3) 27 (0.3)
Lost to follow-up, n (rate) 2 (0.4) 85 (10.2) 169 (14.1) 126 (10.0) 303 (10.5) 685 (10.2)

* Occupational and blood transfusion.

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

‡ Follow up in person-year.

± Rate calculation: number of events/100 person-years.

IQR: Interquartile range; NA: Not available.

Altmann et al.

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

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