U Brook, R Feigin, M Sherer, D Geva
Prevalence, attitudes and knowledge of high school pupils towards drugs and other addictions: implications for school health education in Israel
Patient education and counseling
study aimed identify important principal components pcs contribute prevalence change hivaids 44 ssa data different national international datasets study estimated hiv prevalence trend principal component analysis pca using elbow method number important pcs contributions identified quality representation checked contributing variables important pcs identified finally status prevalence progress trend influenced component pca influenced variable quality representation pcs reported study found hiv prevalence varied significantly 30 countries showed good progressdecline four pcs accounted 51 total variance literacy cohabitation media exposure hiv status awareness highly contributing factors based findings gapbased response help reduce burden hiv