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Table 5 Fixed parameters and data sources used in the HIV Condom Model

From: Modeling health impact of global health programs implemented by Population Services International

Parameter

Input

Source

Per-act infectivity of HIV when index partner has no symptom and both partners are negative for other STIs

0.0005

Gray et al., 2001 [24]; Boily et al., 2009 [41]

Per-act infectivity of HIV when index partner has acute infection of HIV and both partners are negative for other STIs

0.0047

Pilcher et al., 2004 [42]; Wawer et al., 2005 [43]

Effect of STI on HIV transmission

5

Satten et al., 1994 [25]; Rottingen et al., 2001 [44]

Protective efficacy of male condoms

90%

Pinkerton et al., 1997 [45]

Protective efficacy of male circumcision

60%

Auvert et al., 2005 [46]; Bailey et al., 2007 [47]; Gray et al., 2007 [48]

Acute period of HIV infection (days)

54

Pilcher et al., 2004 [42]

Duration of HIV and AIDS when left untreated (years)

10 for HIV;

2 for AIDS

Todd et al., 2007 [49]

Disability weight of HIV

0.135 for HIV; 0.505 for AIDS

Mathers et al., 2006 [18]

Age at infection of HIV (years)

26

Assumed based on the fact that most sero-conversions occur within the 25-29 year-old age group (Todd et al., 2007 [49])

Wastage of condoms

10%

Communication with PSI programmers

Life expectancy at birth (years)

83.1

WHO, 2011 [35]