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Table 1 Demonstrates data on AIS prevalence (%) according to the city or geographical periphery that the epidemiological study was performed, the size of the sample of the examined girls, the geographic latitude in degrees and the author and the year of publication.

From: Association between adolescent idiopathic scoliosis prevalence and age at menarche in different geographic latitudes

City or Geographical Periphery Geographic Latitude in degrees No of girls screened Prevalence of IS (%) Author and year of publication
Helsinki (Finland) 65,00 401 12,0 Nissinen M et al 1993 [1]
Malmo (Sweden) 57,50 8469 3,21 Willner S & Uden A 1982 [2]
Esbjerg (Denmark) 55,30 1000 4,10 Laulund T et al 1982 [3]
Oxford (UK) 52,50 2613 3,20 Dickson RA et al 1983 [4]
Nottingham(UK) 52,00 321 1,90 Burwell RG et al 1983 [5]
Quebec (Canada) 47,50 14701 2,37 Morais Tet al 1985 [6]
Rochester (Minn, USA) 47,50 1212 2,70 Yawn BP et al 1999 [7]
Wisconsin (USA) 47,50 7462 2,03 Gore DR et al 1981 [8]
Slovenia 45,00 70200 2,89 Plenicar-Cucek M et al 1995 [9]
Montreal (Canada) 45,30 13500 2,70 Rogala EJ et al 1978 [10]
Cape Cod (USA) 42,00 928 5,00 Strayer LM et al, 1973 [11]
Delaware (USA) 38,50 25550 2,80 Shands AR et al 1955 [12]
Epirus (Greece) 38,00 40962 2,60 Soucacos PN et al 1997 [13]
California (USA) 36,00 1940 7,70 Brooks HL et al 1975 [14]
Crete (Greece) 35,00 10278 1,80 Koukourakis I et al 1997 [15]
Wakayaka (Japan) 34,00 1702 4,90 Sugita K 2000 [16]
Hu Guan (China) 25,30 12000 1,60 Ma X et al 1995 [17]
Changsha (China) 28,00 3963 2,45 Pin LH et al 1985 [18]
Taipei (Taiwan) 27,50 33596 1,00 Huang SC 1997 [19]
Singapoure 5,00 37141 0,93 Wong HK et al 2005 [20]