The incidence of bladder cancer in Iran: a systematic review and meta-analysis

Objective: There are several reports related to the incidence of bladder cancer (BC) from various geographical locations of Iran. Nevertheless, no comprehensive systematic review has conducted in this regard. Therefore, the present systematic review and meta-analysis carried out to estimate the incidence rate of BC among Iranian people. Patients and Methods: This systematic review was done based on the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) in October 2017. A search was performed in five international database (Medline/PubMed, Scopus, Embase, ISI/ Web of Science, and Google Scholar), and four national databases (Scientific Information Database, MagIran, Barakat Knowledge Network System, and IranDoc). The incidence rate of BC was calculated using random-effect model. Results: An aggregate of 226 papers was obtained in the primary search of the databases. After further refinement of the retrieved studies, 29 studies were included. The age-standardized rate of BC was 10.92, 95% CI (9.88-11.96) and, 2.80, 95% CI (2.47-3.13) in males and females, respectively. Conclusions: The incidence of BC was lower in Iran compared to other parts of the world. However, more investigations are needed to outline the exact incidence rate and the trend of BC among Iranian population

THE INCIDENCE OF NON-HODGKIN LYMPHOMA IN IRAN: A SYSTEMATIC REVIEW AND META-ANALYSIS

Objective: Non-Hodgkin's lymphoma (NHL) is one of the common cancers of the blood. The present study is conducted to evaluate the incidence rates of NHL in Iran. Patients and Methods: A systematic search was conducted on all published studies of NHL incidence using Medline/PubMed, Scopus, Embase, Web of sciences, and four Iranian databases (Scientific Information Database, MagIran, IranMedex, and IranDoc) until June 2018. This systematic review was done according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA). Results: After first searching 262 potentially relevant studies was yielded. A total of 9 studies were included. The results of the random effect model were demonstrated the age-standardized rate (ASR) of NHL was 4.43, 95% CI (2.76 to 6.11) among males and 2.79, 95 % CI (1.71 to 3.88) among females. Conclusions: In comparison with other geographical locations, the incidence of NHL is lower in Iran