title: Incidence rate of ovarian cancer cases in Saudi Arabia: an observational descriptive epidemiological analysis of data from Saudi Cancer Registry 2001-2008.
abstract: OBJECTIVE
  This study provides descriptive epidemiological data, such as the percentage of cases diagnosed, crude incidence rate (CIR), and age-standardized incidence rate (ASIR) of ovarian cancer in Saudi Arabia from 2001-2008.
  
  
  METHODS
  A retrospective descriptive epidemiological analysis of all ovarian cancer cases recorded in the Saudi Cancer Registry (SCR) from January 2001-December 2008 was performed. The data were analyzed using descriptive statistics, analysis of variance tests, Poisson regression, and simple linear modeling.
  
  
  RESULTS
  A total of 991 ovarian cancer cases were recorded in the SCR from January 2001-December 2008. The region of Riyadh had the highest overall ASIR at 3.3 cases per 100,000 women, followed by the Jouf and Asir regions at 3.13 and 2.96 cases per 100,000 women. However, Hail and Jazan had the lowest rates at 1.4 and 0.6 cases per 100,000 women, respectively. Compared to Jazan, the incidence rate ratio for the number of ovarian cancer cases was significantly higher (P<0.001) in the Makkah region at 6.4 (95% confidence interval [CI]: 4.13-9.83), followed by Riyadh at 6.3 (95% CI: 4.10-9.82), and the eastern region of Saudi Arabia at 4.52 (95% CI: 2.93-6.98). The predicted annual CIR and ASIR for ovarian cancer in Saudi Arabia could be defined by the equations 0.9 + (0.07× years) and 1.71 + (0.09× years), respectively.
  
  
  CONCLUSIONS
  We observed a slight increase in the CIRs and ASIRs for ovarian cancer in Saudi Arabia from 2001-2008. Riyadh, Jouf, and Asir had the highest overall ASIR, while Jazan and Hail had the lowest rates. Makkah, Riyadh, and the eastern region of Saudi Arabia had the highest incidence rate ratio for the number of ovarian cancer cases. Further analytical studies are required to determine the potential risk factors of ovarian cancer among Saudi women.
authors.affiliation: School of Life Sciences, University of Lincoln, Brayford Pool, Lincoln, UK ; Al-Baha University, Kingdom of Saudia Arabia.
authors.forename: Ibrahim G
authors.initials: IG
authors.lastname: Alghamdi
authors.affiliation: School of Life Sciences, University of Lincoln, Brayford Pool, Lincoln, UK.
authors.forename: Issam I
authors.initials: II
authors.lastname: Hussain
authors.affiliation: Ministry of Health, General Directorate of Health Affairs, Al-Baha, Kingdom of Saudi Arabia.
authors.forename: Mohamed S
authors.initials: MS
authors.lastname: Alghamdi
authors.affiliation: King Fahad Specialist Hospital-Dammam, Kingdom of Saudi Arabia.
authors.forename: Mansour M
authors.initials: MM
authors.lastname: Alghamdi
authors.affiliation: King Fahad Specialist Hospital-Dammam, Kingdom of Saudi Arabia.
authors.forename: Ahlam A
authors.initials: AA
authors.lastname: Dohal
authors.affiliation: Department of Research and Development, Lincoln Hospital, United Lincolnshire Hospitals, National Health Service Trust, Lincoln, UK.
authors.forename: Mohammed A
authors.initials: MA
authors.lastname: El-Sheemy
keywords: Saudi Cancer Registry; cancer epidemiology; incidence rate; ovarian cancer