???·????-????????·????-????????·???-???
?????????? 2012 ?? 2014 ???????????????????????????????????????????
?????? 2012 ?? 2014 ????278 ??????????????????????????????????????????????????? 100??????????????????? 100?????? 22,417 ??
????????????? 169 ??????60.79%???????????? 109 ??????39.21%??p<0.03?????????????????????????????? 65 ??23.38%??? 213 ??76.61%??p<0.001??????? 0.16???????
???????????????????????/?????????????????????
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