The survey was conducted in 2009 and covered more than 6, 000 rural households across the country.
Rural households are feeling the pinch too, with children pulled out of school to work on family land.
Nearly all rural households store them, but few hospitals are equipped to treat patients who have swallowed them.
Among the country's poorest rural households, that ratio rises to 65%, it said.
Young girls from poor rural households are the least likely of any social group to be in school or to ever gain access to education.
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Over 1m people in Cambodia depend solely on fishing to make a living, while in Laos 70% of rural households supplement their income by fishing.
That would raise the domestic price of food, benefiting rural households.
Yet, the wealth gap among rural households is also widening.
The per capita income gap between the top 10% of urban households and bottom 10% of rural households is adjusted from 23x based on the official data to 65x.
There is huge potential for higher consumption in the countryside as incomes rise: only 30% of rural households have a refrigerator, for example, compared with virtually all urban households.
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Poor and rural households are among the most disadvantaged.
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Much of the avoided energy consumption will come from the switch to carbon-neutral district heating (rural households will switch from oil, natural gas, and electric heating to heat pumps and biomass burners).
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As of the end of 2007, more than 26.5 million rural households were using household biodigesters, saving the equivalent of 44 million tons of CO2 emissions, according to China's State Council Information Office.
"There is no awareness about the need for filtration among most Indians, with a mere 6% of urban households and 1% of rural households using water purifiers, " said Ashvini Hiran, chief operating officer at Tata Chemicals.
The survey showed that urban households spend twice as much as rural households, and that households in Maputo spend five times as much as households in the poorest province, Zambezia, in the centre of the country.
According to the University, the total income of the top 20 percent of the rural households was 10.19 times higher than the bottom 20 percent and that the wealth gap in west China was bigger than in the east of the country.
The watchdog said households in rural areas were worst affected with many facing high surcharges for delivery or some companies refusing to deliver.
Money set aside for more investment in teachers and training should extend to meeting the needs of the most marginalized -- 18 million blind and disabled boys and girls, as well as rural girls from poor households.
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So will the latest food security scheme aimed at providing subsidised food grains to 75% of the rural population and half of the urban households work?
The ultimate buyers of the propane were households and businesses, including many poor rural families living in trailer homes.
In general, poor children living in rural areas are more likely than urban children from rich households to repeat grades and leave school before completing primary education and attaining basic foundational skills.
The other 1.5 million households belong to a consortium called the National Rural Telecommunication Cooperative, which pays DirecTV a licensing fee to resell its services in certain areas and makes no marketing effort to draw more subscribers in those regions.
Including rural areas, Tata Housing sees an even larger market of 180m households earning between 90, 000 and 200, 000 rupees.
According to Mr Rajsekhar, there are now about 1m groups, with 10m members, covering 8m-9m households, or 95% of the state's rural poor.
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