A corner-sectional study are through with a representative probabilistic take to regarding adolescents living into the Santiago Isle, Cape Verde, within the 2007.
Cape Verde is actually an archipelago composed of 10 islands (nine of which is actually inhabited) based in brand new Atlantic Ocean, approximately 500 kilometer to the west of photography equipment, occupying 4.033 kilometres dos . This study was presented toward Santiago Island, representing the most significant terrestrial skin (991 km 2 ) and you will populace into the Cape Verde, which have everything people, ten 54% of your total society.
A-two-phase probabilistic sample strategy are functioning. When you look at the stage you to (strata sampling) stratification is actually conduced for every single municipality: i have removed a haphazard selection of brand new colleges by town. Inside the stage a few (people testing) the department try conduced for each and every school because of an arbitrary mark of students regarding the 7th to the twelfth levels, in all the chose schools. So it attracting is essential since it leads to a list away from every pupils that have quantitative characteristics interesting. To phrase it differently, the new record of the many students need proceed with the introduction requirements for the per draw. Within analysis, eight of sixteen public colleges of your own Area municipalities had been integrated.
The newest shot dimensions is based on the part of sexual active teens (83,6%) on the shot error fixed on step three,0% and you can count on amount of 95,0%.