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Epidemiological Evaluation of Laryngeal Cancer Incidence in Kazakhstan for The Years 1999-2009
Igissinov, Nurbek,Zatoskikh, Vera,Moore, Malcolm Anthony,Igissinov, Saginbek,Toulebaeyev, Rais,Mustafina, Meruert,Valieva, Saule,Aldiyarova, Gulmira,Bukeyeva, Zhanar,Venglovskiy, Anatoly Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.6
The purpose was to provide a descriptive epidemiological assessment of the incidence of cancer of the larynx in Kazakhstan and spatial evaluation with gender characteristics. Thgis retrospective study covered all new cases of laryngeal cancer in 11 years (1999-2009). The total number was 4,967 cases, 4,535 (91.3%) in males and 432 (8.7%) in women, with a ratio of 10.5:1. The higher incidence in men compared to women was evident in all age groups, the differences being statistically significant (p<0.05). At the same time revealed a unimodal growth with age, peaking at 70 years and older both sexes. In the dynamics, incidence rates of laryngeal cancer demonstrated a tendency to decrease, in women (T=-6.7%) this being more pronounced than in men (T=-3.3%). Levels were determined to produce cartograms of cancer of the larynx for male and female populations, clear geographical variation being evidenced. The data are discussed with reference to possible risk factors.
Laryngeal Cancer in Kazakhstan - Ethnic, Age and Gender Differences over Time
Igissinov, Nurbek,Zatoskikh, Vera,Moore, Malcolm Anthony,Igissinov, Saginbek,Aldiyarova, Gulmira,Tokmurziyeva, Gulmira,Valieva, Saule,Alpeissova, Sholpan,Sarsenova, Samal Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11
The purpose of the present study was to provide an assessment of the incidence of cancer of the larynx in Kazakhstan with especial attention to ethnicity and gender, as well as age. The retrospective design covered all new cases of laryngeal cancer in 11 years (1999-2009). The total number was 4,967 cases, 4,535 (91.3%) in males and 432 (8.7%) in women, with a gender ratio of 10.5:1. Patients of Kazakh (31.2%) and Russian (51.4%) ethnicity accounted for the vast majority (82.6%), with Russians predominating in both sexes, but particularly in females. Age peak in Kazakhs was 70 years and older ($14.6{\pm}0.70/0000$), and in Russians was 60-69 years ($21.6{\pm}1.30/0000$). In the dynamics, the rates had the tendency to decrease more markedly in Russian than Kazakh men, especially in the younger groups, while increase was noted in the youngest females of both ethnicities, but again greater in Russians, presumably reflecting change in underlying lifestyle factors.