Tuesday, 20 September 2016

Cancer worldwide statistics

Cancer worldwide statistics
Cancer statistics give an idea about what happens in a large group of people. Statistics describe things such as:·         How many people are diagnosed with and die from cancer every year,
·         The number of people who are currently living after a cancer diagnosis,
·         The average age at diagnosis,
·         The numbers of people who are still alive at a given time after diagnosis.
They also tell us about differences among groups defined by age, sex, racial/ethnic group, geographic location, and other categories.Cancers figure among the leading causes of morbidity and mortality worldwide, with approximately 14 million new cases and 8.2 million cancer related deaths in 2012. The number of new cases is expected to rise by about 70% over the next 2 decades. Among men, the 5 most common sites of cancer diagnosed in 2012 were lung, prostate, colorectum, stomach, and liver cancer. Among women the 5 most common sites diagnosed were breast, colorectum, lung, cervix, and stomach cancer (WHO). A person’s risk of developing cancer depends on many factors, including age, genetics, and exposure to risk factors. Cancer risk factors are overall similar worldwide. Smoking, insufficient physical activity, alcohol, diet, overweight and obesity, and infections account for a high proportion of cancers worldwide, as they do in the UK. Prevalence of different risk factors varies by region and country, this is partly why overall cancer incidence rates, and the most common types of cancer, also vary by region and country. Smoking is the single most preventable cause of death in the world, and around a third of tobacco-caused deaths are due to cancer. Alcohol causes an estimated 6% of deaths worldwide, around 1 in 8 of which are due to cancer (2012), this factor is highest in Europe and America. Overweight and obesity prevalence is increasing particularly in low- and middle-income countries. Overweight and obesity are leading causes of death worldwide (WHO).
The overall age standardized cancer incidence rate is almost 25% higher in men than in women, with rates of 205 and 165 per 100,000, respectively. Male incidence rates vary almost five-fold across the different regions of the world, with rates ranging from 79 per 100,000 in Western Africa to 365 per 100,000 in Australia/New Zealand (with high rates of prostate cancer representing a significant driver of the latter). There is less variation in female incidence rates (almost three-fold) with rates ranging from 103 per 100,000 in South-Central Asia to 295 per 100,000 in Northern America.The rates of mortality are 15% higher in more developed than in less developed regions in men, and 8% higher in women. In men, the rates are highest in Central and Eastern Europe (173 per 100,000) and lowest in Western Africa (69). In contrast, the highest rates in women are in Melanesia (119) and Eastern Africa (111), and the lowest in Central America (72) and South-Central (65) Asia (GLOBOCAN 2012 Statistics).


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