Dr Soheil Hassanipour, Dr Mohammad Fathalipour, Dr Hamed Delam, Dr Mohammad Ghorbani, Mrs Elham Abdzadeh, Dr Morteza Arab-Zozani, Dr Shirin Riahi, Dr Hamid Salehiniya ,
Volume 9, Issue 3 (6-2019)
Abstract
Background: Childhood cancer (ChC) is very rare and occurs between birth and 14 years of age. There are several reports about ChC incidence from various regions of Iran, but with conflicting results. The present study aimed to do a systematic review to estimate the accurate incidence rate of ChC among Iranian people.
Materials and Methods: This systematic review was performed based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) checklist in 2018. A literature search was conducted using international databases (Medline/PubMed, Scopus, ISI/Web of Knowledge, and Google Scholar) for English papers, and national databases (Scientific Information Database, MagIran, IranMedex, and IranDoc) for Persian papers which estimated the incidence rate of ChC in any geographical location in Iran. The incidence rate of ChC was calculated using random-effect model.
Results: Out of 157 papers in the primary searches, 12 studies were included by advanced screening and refinement. The crude incidence rate (CIR) of ChC in 0-14 years was 16.8 per 100,000 (95% CI: 9.04-24.56) for boys and 16.56 per 100,000 (95% CI: 10.51-22.62) for girls.
Conclusion: The incidence of ChC in Iran is higher compared to other parts of the world. Considering this issue, holding some interventional programs on tackling potential risk factors, including air pollution, in different regions of Iran is suggested.
Mr Reza Zare, Dr Hoda Haghshenas, Mrs Sara Moghaddam, Mr Ramin Avazpour, Dr Hossein Kargar Jahromi, Dr Hamed Delam, Dr. Ehsan Amini-Salehi,
Volume 15, Issue 1 (1-2025)
Abstract
Background: Leukemia is one of the most common types of cancer worldwide, especially in children. The present research aims to comprehensively estimate leukemia cancer survival in Asian countries through a systematic review and meta-analysis.
Materials and Methods: The current research is a systematic review and meta-analysis of leukemia patients' survival rates in Asian countries. Five databases ISI, PubMed, Scopus, ProQuest, and Google Scholar were used to search for relevant studies. Keywords were selected based on MeSH. The search for studies continued until February 1, 2023. The random-effects model was used to reduce the risk of bias in the studies. The Egger’s regression test was also used to evaluate the risk of publication bias. A total number of 73 papers were considered for the analysis. All analyses were performed by Comprehensive Meta-Analysis Version 2 software.
Results: The overall one-year and five-year survival rates of the leukemia patients were 62.3% (95% CI: 60.9%-63.6%) and 46.7% (95% CI: 41.2%-52.3%), respectively. The results of the subgroup analysis revealed that the five-year survival rate of myeloid leukemia was 36.3% (95% CI: 35.8%-36.8%), while the five-year survival rate of lymphoid leukemia was 62.4% (95% CI: 58.2%-66.4%). The results of the overall 5-year survival rate of leukemia patients by age group showed that, in general, children have a higher survival rate than adults [63.3% (95% CI: 58.7%-67.6%) vs. 27.6% (95% CI: 23.2%-32.6%)].
Conclusion: In general, the survival rates of leukemia patients in Asian countries are very different. On the whole, however, the present study demonstrated that the five-year survival rate for leukemia patients in Asian countries has achieved a level of 46.7%, irrespective of variables such as age, cancer stage, or treatment protocol.
