“…From the results of these surveys researchers are able to calculate the percentage increase in condom use (Ford, Wirawan, Fajans, Meliawan, MacDonald & Thorpe, 1996;Fox, Bailey, Clarke-Martinez, Coello, Ordonez & Barahona, 1993;Ngugi et al, 1996;Visrutaratna et al, 1995;Williams et al, 1992); increase in knowledge about HIV transmission; behaviour change (Aplasca et al, 1995;Archibald, Chan, Wong, Goh & Goh, 1994;Asmoah-Adu, et al, 1994;Klepp et al, 1994;Munodawafa, Marty & Gwede, 1995;Schopper et al, 1995;Wilson et al, 1992;Wynendaele, Bomba, Manga, Bhart & Fransen, 1995;); and changes in perceptions of personal risk (Pauw, Ferrie, Villegas, Martínez, Gorter & Egger, 1996). Quantitative methodology is also used through pre-and post-intervention STD tests with project success being measured by significant declines in STD prevalence or incidence (Allen et al, 1992;Archibald et al, 1994;Bhave et al, 1995;Chipfakacha, 1993;Laga et al, 1994;Nymauryekung'e et al, 1997). Evaluation through the comparison of pre-and post-intervention HIV incidence or prevalence is also employed (Allen et al, 1992;Grosskurth et al, 1995;Nymauryekung'e et al, 1997).…”