Melle Ekane Maurice*、Kamgang Serge Alex、Ewane divine、Kamah Pascal Bumtu、Mbole Veronique、Esong Lionel Ebong
??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? X 2 =5.441 df=3?P<0.05??????????????????? 1-5?22%?? 6-10?78%??????????? 20%??? 7% ??? 4% ???????????????? 70%????????????????? X 2 =9.723 df=6?P<0.05??????????????????? 48%???? 45% ????? 7%???????????????????????? 93%???????? 7%???????????????????? X 2 =34.371 df=9?P<0.05?????????????????? 55%??? 30%??? 11%????? 4%????????????????? X 2 =3.332 df=6?P<0.05?????????????????????????????????????????????????????????????????????????????????????????????????????
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