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Sungwalee, Waraporn,Vatanasapt, Patravoot,Suwanrungruang, Krittika,Promthet, Supannee Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.7
Background: As the treatment modalities for oral cancer have been relatively consistent during the last two-decades, this study was conducted to compare survivals of oral cancer patients in Khon Kaen Province before and after the universal coverage scheme (UC) was launched in Thailand. Materials and Methods: The data were retrieved from the population-based cancer registry of Khon Kaen for oral cancer patients diagnosed during 1992-2001 (pre-UC), and 2004-2012 (post-UC). To compare survival of the two cohorts, Kaplan Meier and log rank tests were employed. Results: Of 1,196 patients, 65% were females and the median age was 65 years. The most common primary sites were lip (31.0%), tongue (29.9%), and buccal mucosa (14.6%). The proportion of early stage cancer increased from 20.4 % in pre-UC to 41.3% in post-UC. The overall 5-year survival rate was 36.5% (95% CI =32.6-40.9) for pre-UC and 32.4% (95% CI = 28.8-36.4) for post-UC. The declining survival was mainly due to an increasing proportion of tongue cancer. However, no survival improvement was demonstrated on subgroup analysis of the tongue cancer patients. Conclusions: After the universal coverage scheme had been launched, early diagnosis increased, but no significant gain in survival for oral cancer patients was achieved.
Reproductive Risk Factors for Thyroid Cancer: A Prospective Cohort Study in Khon Kaen, Thailand
Sungwalee, Wararat,Vatanasapt, Patravoot,Kamsa-ard, Siriporn,Suwanrungruang, Krittika,Promthet, Supannee Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.9
Background: Because of the gender disparity in the incidence of thyroid cancer, this study aimed to determine the association between reproductive factors and thyroid cancer. Methods: A total of 10,767 eligible women from the Khon Kaen Cohort, recruited and interviewed between 1990 and 2001, were followed up until 2011. The data were linked to the Khon Kaen Population-Based Cancer Registry to detect thyroid cancer cases. Results: There was 17 thyroid cancer cases detected, an incidence of 11.2 per 100,000 person-years, of which 70.6 % were papillary tumors. The incidence was apparently greater among those with an early age of menarche, nulligravida women, and oral contraceptive users. Conlusions: There was a trend for thyroid cancer to develop in relation to longer estrogen exposure. This evidence is inconclusive but warrants further investigation.