Only those who’d started its sexual lifetime was in fact felt, resulting in the exception to this rule out-of 400 teenagers
A combination-sectional studies is actually through with a realtor probabilistic shot out-of teenagers residing to your Santiago Area, Cape Verde, for the 2007.
Cape Verde was an archipelago including ten countries (nine at which was inhabited) located in the newest Atlantic Water, up to 500 kilometer to the west of photography equipment, consuming 4.033 kilometres dos . This research is conducted towards Santiago Island, symbolizing the most significant terrestrial skin (991 km 2 ) and people inside the Cape Verde, which have just as much as society, 10 54% of your complete inhabitants.
A two-stage probabilistic try strategy try working. Inside the phase you to definitely (strata testing) stratification is actually conduced per town: i have pulled an arbitrary selection of this new colleges of the local government. From inside the stage one or two (party sampling) brand new section is conduced each university through a haphazard mark away from students on the 7th towards the 12th grade, throughout the selected schools. It drawing is important as it contributes to a record from most of the students which have quantitative attributes of interest. Put simply, the brand new list of the many youngsters need to proceed with the introduction conditions in each mark. Within analysis, eight of one’s 16 societal universities of your own Isle municipalities had been included.
Brand new attempt size was in accordance with the percentage of sexual productive teenagers (83,6%) for the test mistake repaired within 3,0% and you may count on number of 95,0%.
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