Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Feb 21, 2009; 15(7): 849-852
Published online Feb 21, 2009. doi: 10.3748/wjg.15.849
Table 2 Baseline characteristics of the study groups
Study groupsCharacteristics
No (%)M/F (%)Mean age (yr)Yr
Schoolchildren410 (10.6)264 (64.4)/ 146 (35.6)15.7 ± 1.22004
Students666 (17.2)340 (51.1)/ 326 (48.9)23.1 ± 1.72005
Military500 (12.9)500 (100)/ 0 (0)19.2 ± 2.32005
Casual blood donors1286 (33.1)987 (76.6)/ 299 (23.3)32.4 ± 4.82004
Voluntary blood donors378 (9.7)263 (69.6) 115 (30.3)40.1 ± 5.12005
Pregnant women640 (16.5)0 (0) 640 (100)27.4 ± 4.92006
Total38802354 (60.7) 1526 (39.3)26.3 ± 6.22004-2006