Around 9 in 10 people in low-and middle-income countries live in places where they regularly experience dangerous levels of outdoor air pollution.

在低收入及中等收入国家，大约十分之九的人生活在室外空气污染经常达到危险程度的地方。

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The data were analysed and compared with data derived from studies in other low - and middle-income countries.

对数据进行分析并与来自其他中低收入国家研究得出的数据进行比较。

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The majority of low and middle-income countries spend less than 2% of their health budget on mental health.

大部分中低收入国家在这方面的支出不足全部卫生事业支出的2%。

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A new study says the leading cause of disability in older people in low and middle income countries is dementia.

VOA: special.2009.12.28

The study says the elderly are nine percent of the total population of low and middle income countries today.

VOA: special.2009.12.28

In low and middle income countries, heart disease and cancer get much of the attention given to chronic diseases.

VOA: special.2009.12.28

"Almost three-quarters of the deaths caused by sugary drinks are in low and middle income countries, " says study author Dr. Dariush Mozaffarian, co-director of the cardiovascular epidemiology program at the Harvard School of Public Health.

CNN: Sugary drinks linked to 180,000 deaths worldwide

And it says about eight million people in low and middle-income countries are getting the treatment they need, up from just 0.4 million in 2003.

BBC: Partner treatment 'cuts HIV transmission'

Not surprisingly, 84 percent of deaths due to eating too much sodium occurred in low and middle-income countries where access to fresher, less preserved foods is more difficult and prohibitively expensive.

FORBES: Study: Eating Too Much Salt is Killing Us By the Millions