Analysis of Relationships between Altitude and Distance from Volcano with Stomach Cancer Incidence Using a Geographic Information System
F Amani et al
Abstract
Gastric cancer (GC) is the fifth most common cancer in the world, with a wide variation in incidence rates
across different geographical areas. In Iran GC is the most common cancer in males and it is reported to be
the third most prevalent after breast and colorectal in females. A geographical information system (GIS) allows
investigation of the geographical distribution of diseases. The purpose of the present study was to explore the
relationship between gastric cancer and effective climatic factors using GIS. The dispersion distribution and
the relationship between environmental factors effective on cancer were measured using Arc GIS. Of all cases,
672 (73.8%) were in males with a sex ratio of 3 to1. The highest incidence by cities was seen in Namin with 137.5
per 100,000. The results of this study showed that the distribution of GC around the Sabalan volcanic mountain
was significantly higher than other places in the same province. These results can be considered as a window to
future comprehensive research on gastric cancer.
Key Words: Gastric cancer - geographical information system - incidence - environmental factors - Iran
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