Prevalence of oral cancer and potentially malignant lesions among shammah users in Yemen
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Prevalence of oral cancer and potentially malignant lesions among shammah users in Yemen. / Scheifele, C; Nassar, A; Reichart, P A.
in: ORAL ONCOL, Jahrgang 43, Nr. 1, 01.01.2007, S. 42-50.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Prevalence of oral cancer and potentially malignant lesions among shammah users in Yemen
AU - Scheifele, C
AU - Nassar, A
AU - Reichart, P A
PY - 2007/1/1
Y1 - 2007/1/1
N2 - The purpose of this study was to assess the prevalence of oral precancerous lesions and squamous cell carcinoma (OSCC) in Yemeni users of shammah, a traditional smokeless tobacco habit known in the Arabian Peninsula. The study group comprised 199 male and one female shammah users who were interviewed via a standardised questionnaire and clinically examined in 48 Yemeni villages and cities. Cases with oral leukoplakia (OL) or mucosal burns (MB) were compared with users without any lesion. MB were detected in 31%, of which 46.8% were located on the tongue or floor of the mouth, and OL in 27%, of which 59.2% were located in the same region. In addition, two cases (1%) of apparent OSCC were identified. Statistically significant increased OR (95% CI) of OL were (a) 6.91 (2.66-17.95) for an average duration of the respective shammah application >5min.; (b) 4.90 (1.99-12.08) for a daily frequency of those applications >10; and (c) 4.22 (1.43-12.43) for a daily duration >6h of chewing qat, also a traditional habit in Yemen. Likewise, decreased OR were (a) 0.39 (0.18-0.85) for rinsing the mouth after the shammah application; (b) 0.36 (0.17-0.78) for successful attempts to stop the use in the past; and (c) 0.26 (0.09-0.72) for existing knowledge about the carcinogenicity of shammah that was present in only 19% overall. In conclusion, evidence was shown for a significant association between the prevalence of OL and the daily duration of shammah application in a dose-dependent manner. An appropriate public health program might help to reduce this potential OSCC burden in shammah users.
AB - The purpose of this study was to assess the prevalence of oral precancerous lesions and squamous cell carcinoma (OSCC) in Yemeni users of shammah, a traditional smokeless tobacco habit known in the Arabian Peninsula. The study group comprised 199 male and one female shammah users who were interviewed via a standardised questionnaire and clinically examined in 48 Yemeni villages and cities. Cases with oral leukoplakia (OL) or mucosal burns (MB) were compared with users without any lesion. MB were detected in 31%, of which 46.8% were located on the tongue or floor of the mouth, and OL in 27%, of which 59.2% were located in the same region. In addition, two cases (1%) of apparent OSCC were identified. Statistically significant increased OR (95% CI) of OL were (a) 6.91 (2.66-17.95) for an average duration of the respective shammah application >5min.; (b) 4.90 (1.99-12.08) for a daily frequency of those applications >10; and (c) 4.22 (1.43-12.43) for a daily duration >6h of chewing qat, also a traditional habit in Yemen. Likewise, decreased OR were (a) 0.39 (0.18-0.85) for rinsing the mouth after the shammah application; (b) 0.36 (0.17-0.78) for successful attempts to stop the use in the past; and (c) 0.26 (0.09-0.72) for existing knowledge about the carcinogenicity of shammah that was present in only 19% overall. In conclusion, evidence was shown for a significant association between the prevalence of OL and the daily duration of shammah application in a dose-dependent manner. An appropriate public health program might help to reduce this potential OSCC burden in shammah users.
KW - Adolescent
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Carcinoma, Squamous Cell/epidemiology
KW - Case-Control Studies
KW - Child
KW - Female
KW - Humans
KW - Male
KW - Middle Aged
KW - Mouth Neoplasms/epidemiology
KW - Odds Ratio
KW - Precancerous Conditions/epidemiology
KW - Prevalence
KW - Tobacco, Smokeless/adverse effects
KW - Yemen/epidemiology
U2 - 10.1016/j.oraloncology.2005.12.028
DO - 10.1016/j.oraloncology.2005.12.028
M3 - SCORING: Journal article
C2 - 16759897
VL - 43
SP - 42
EP - 50
JO - ORAL ONCOL
JF - ORAL ONCOL
SN - 1368-8375
IS - 1
ER -