ABSTRACT
This study presents descriptive epidemiological data related to prostate cancer cases diagnosed from 2001 to 2008 among Saudi men, including the frequency and percentage of cases, the crude incidence rate [CIR] and the age-standardised incidence rate [ASIR] adjusted by region and year of diagnosis. This is a retrospective descriptive epidemiological analysis of all Saudi prostate cancer cases recorded in the Saudi Cancer Registry [SCR] between January 2001 and December 2008. Statistical analyses were conducted using descriptive statistics, the Poisson regression model, a simple linear regression model and analysis of variance with the Statistical Package for the Social Sciences version 20.0 [SPSS]. A total of 1739 cases were registered in the SCR between January 2001 and December 2008. The eastern region of Saudi Arabia had the highest overall ASIR at 10.1 per 100,000 men, followed by Riyadh at 7.1 and Makkah at 5.2, while Jizan and Najran had the lowest average ASIRs at 1.4 and at 2.0, respectively. The Poisson regression model for the region of Jizan shows that the incidence rate ratio [IRR] was significantly higher [p < 0.001]; for the regions of Riyadh at 3.43 times [95% CI, 3.13-3.73], followed by Makkah at 2.56 [95% CI, 2.38-2.74] and the eastern province at 1.93 [95% CI, 1.64-2.23]. The annual prediction of the CIR of prostate cancer in Saudi Arabia could be defined by the equation 1.53 + [0.094 Years], and the prediction of the ASIR could be defined by the equation 2.98 + [0.182 Years]. There was a steady increase in the CIRs and ASIRs for prostate cancer between 2001 and 2008. The eastern region, Riyadh and Makkah had the highest overall ASIR in Saudi Arabia. Further effective screening programmes and active treatment measures are needed to control prostate cancer disease among Saudi men
ABSTRACT
To describe the epidemiological data of leukemia cases diagnosed from 2001 to 2008 among male and female Saudis, including the frequency and percentage of cases, the crude incidence rate [CIR], and the age-standardized incidence rate [ASIR] stratified by leukemia subtype, region, and year of diagnosis. This is a retrospective descriptive epidemiological analysis of all Saudi leukemia cases recorded in the Saudi Cancer Registry SCR between January 2001 and December 2008. The study was carried out in 2013 to investigate the pattern of leukemia in the Saudi population. Descriptive statistics and Poisson regression model were used. A total of 3852 leukemia cases were registered in the SCR between January 2001 and December 2008. The region of Riyadh, Saudi Arabia had the highest overall ASIR among Saudi males at 5.2 per 100,000 males, followed by both the Eastern region and Northern region at 4.9 per 100,000 males. Furthermore, the region of Najran recorded the highest overall ASIR among Saudi females at 4.5 per 100,000 females. However, Jazan had the lowest average ASIRs of leukemia in Saudi Arabia. There was a slight increase in the CIRs and ASIRs of leukemia in Saudi Arabia between 2001 and 2008. Riyadh, the Eastern region, and the Northern region had the highest overall ASIRs of leukemia among Saudi males, and Najran had the highest overall ASIRs of leukemia among Saudi females; while Jazan had the lowest rates among the Saudi population