Area Continent Country, region Date of survey Total
of study1 Total
of adolescents1 Age (years)/school grade Proportion of girls Number of definition Definition Reference National Africa Seychelles 2004 4,854 2,177 7th, 10th 51.5% 1 IOTF Bovet et al., 2006 [16 ] South Africa 2008 9,862 9,862 13–19 50.9% 1 IOTF Reddy et al., 2010 [15 ] Tunisia 2004 2,872 2,872 15–19 54.9% 1 IOTF Aounallah-Skhiri et al., 2008 [17 ] America Canada 2004 8,661 4,099 12–17 — 3 IOTF, CDC, WHO Shields and Tremblay, 2010 [18 ] Mexico 2006 48,304 13,219 12–18 50.7% 1 IOTF Bonvecchio et al., 2009 [19 ] USA 2007 44,101 44,101 10–17 — 1 CDC Singh et al., 2010 [20 ] Asia Bahrain 2000 506 506 12–17 50.8% 1 IOTF Al-Sendi et al., 2003 [21 ] China 2002 44,880 12,475 13–17 47.7% 1 IOTF Li et al., 2008 [22 ] Iran 2003-04 21,111 16,035 10–18 51.3% 2 IOTF, CDC Kelishadi et al., 2008 [23 ] Israel 2003-04 5,588 5,588 11–19 55.1% 1 CDC Nitzan Kaluski et al., 2009 [24 ] Jordan 2009 5,640 637 13–18 55.7% 1 IOTF Khader et al., 2011 [25 ] Qatar 2003-04 3,923 3,923 12–17 49.8% 1 IOTF Bener, 2006 [26 ] Saudi Arabia 2005 19,317 7,251 13–18 49.2% 2 CDC, WHO El Mouzan et al., 2010 [27 ] Taiwan 2003 72,789 58,424 10–18 49.0% 1 IOTF Liou et al., 2009 [28 ] United Arab Emirates 2009-10 1,007 276 11–18 — 1 IOTF Ng et al., 2011 [29 ] Europe Cyprus 1999-2000 2,467 1,694 10–17 50.7% 1 IOTF Savva et al., 2002 [30 ] Czech Republic 2005 1,417 957 11–17 49.4% 1 IOTF Kunesova et al., 2007 [31 ] Germany 2008 40,622 5,623 12–16 46.7% 1 IOTF Blüher et al., 2011 [32 ] Greece 2003 14,456 14,456 13–19 53.8% 1 IOTF Tzotzas et al., 2008 [33 ] Italy 2002 4,386 4,386 11, 13, 15 51.6% 1 IOTF Vieno et al., 2005 [34 ] Republic of Ireland 2003 17,499 7,294 11–16 50.6% 1 IOTF Whelton et al., 2007 [35 ] Northern Ireland 2003 2,039 964 11–15 51.5% 1 IOTF Whelton et al., 2007 [35 ] Portugal 2008 22,048 22,048 10–18 51.5% 2 IOTF, WHO Sardinha et al., 2011 [36 ] Sweden 2001 1,732 1,732 10, 13, 16 48.3% 1 IOTF Ekblom et al., 2004 [37 ] Oceania Australia 2004 5,407 1,771 8th, 10th 45.6% 1 IOTF Booth et al., 2007 [38 ] New Zealand 2007 8,796 8,796 13–17 45.4% 2 IOTF, WHO Utter et al., 2010 [39 ] Regional Africa South Africa, Eastern Cape 2008 926 926 13–19 52.1% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Free State 2008 1,236 1,236 13–19 49.1% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Gauteng 2008 931 931 13–19 52.1% 1 IOTF Reddy et al., 2010 [15 ] South Africa, KwaZulu-Natal 2008 910 910 13–19 52.1% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Limpopo 2008 1,140 1,140 13–19 50.5% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Mpumalanga 2008 1,238 1,238 13–19 49.8% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Northern Cape 2008 1,088 1,088 13–19 48.6% 1 IOTF Reddy et al., 2010 [15 ] South Africa, North West 2008 1,234 1,234 13–19 48.6% 1 IOTF Reddy et al., 2010 [15 ] South Africa, Western Cape 2008 1,159 1,159 13–19 56.4% 1 IOTF Reddy et al., 2010 [15 ] America USA, 52 Sates2 2007 — — 10–17 — 1 CDC Singh et al., 2010 [20 ] Brazil, Pernambuco State 2006 4,210 4,210 14–19 59.8% 1 IOTF Tassitano et al., 2009 [40 ] Asia China, Hong Kong 2003-04 2,098 2,098 11–18 53.2% 2 IOTF, CDC Ko et al., 2008 [41 ] India, Manipur 2005-06 3,356 3,356 12–19 56.2% 1 IOTF Bishwalata et al., 2010 [42 ] Jordan, Irbid Governorate 2007 1,355 1,355 13–16 55.6% 1 CDC Abu Baker and Daradkeh, 2010 [43 ] Europe Denmark, Greater Copenhagen area and 3 municipalities outside the Capital Region 2007–09 7,541 7,541 14–16 50.1% 1 IOTF Søren and Jo, 2010 [44 ] France, Aquitaine Region 2004-05 2,385 2,385 11–18 49.1% 1 IOTF Thibault et al., 2010 [45 ] Greece, Crete 2005-06 481 481 10–12 54.0% 1 IOTF Manios et al., 2011 [46 ] Hungary, Szeged and Szolnok regions 2005-2006 14,290 14,290 11–16 48.1% 1 IOTF Baráth et al., 2010 [47 ] Italy, 5 residence regions3 2002 4,386 4,386 11–15 51.6% 1 IOTF Vieno et al., 2005 [34 ] Italy, Sardinia 1999–2001 3,946 3,946 11–15 49.0% 1 IOTF Velluzzi et al., 2007 [48 ] Italy, Sicily 1999–2001 48,897 48,897 11–15 50.7% 1 CDC Baratta et al., 2006 [49 ] Poland, Kujawsko-Pomorskie 2005 — — 13–15 — 1 IOTF Jodkowska et al., 2010 [50 ] Poland, Lubuskie 2005 — — 13–15 — 1 IOTF Jodkowska et al., 2010 [50 ] Poland, Malapolskie 2005 — — 13–15 — 1 IOTF Jodkowska et al., 2010 [50 ] Poland, Podlaskie 2005 — — 13–15 — 1 IOTF Jodkowska et al., 2010 [50 ] Poland, Pomorskie 2005 — — 13–15 — 1 IOTF Jodkowska et al., 2010 [50 ] Spain, Balearic Islands 2007-08 1,231 1,231 12–17 53.4% 1 WHO Bibiloni et al., 2010 [51 ] Spain, Grand Canary 2004-05 1,002 1,002 12–14 50.0% 1 IOTF Henríquez Sánchez et al., 2008 [52 ] Switzerland, Canton of Vaud 2005-06 5,207 5,207 10–14 49.7% 2 IOTF, CDC Lasserre et al., 2007 [53 ] Turkey, Edirne Province 2001 989 989 12–17 48.1% 1 IOTF Öner et al., 2004 [54 ]
