GYTSGlobal Youth Tobacco Survey
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Ethics approval for the study was obtained from the SA Medical Association Research Ethics Committee (for GYTS 2008, MRC 5 07; GYTS 2011, MRC GYTS 12/18/2010; no approval numbers were issued for GYTS 1999 and 2002, but ethics approval was granted).
GYTS 1999 was financially supported by the MRC, the National DoH, and the United Nations Children's Fund (UNICEF).
The 2002 Global Youth Tobacco Survey (GYTS): The 2nd GYTS in South Africa (SA)--A comparison between GYTS (SA) 1999 and GYTS (SA) 2002.
The 2008 Global Youth Tobacco Survey: The 3rd GYTS in South Africa.
It is based on individual GYTS responses and is calculated as the proportion of nonsmokers at each survey site who report having been recently exposed to cigarette ads on billboards, newspapers, or magazines.
Where the GYTS city survey site matches the EIU city survey site, local city prices are used instead of the nationally averaged price.
This figure is lower than that reported from the north-eastern States of India and GYTS report from Uttar Pradesh, where over 65 and 72 per cent of students respectively reported uptake at or before 10 yr of age (5,13).