Powerball 'Strategies' Refuted by Experts

The Powerball jackpot, now a record $550 million, has led to "lotto fever" as millions rush to buy tickets ahead of the 11 p.m. ET drawing, but mathematicians and experts warn that strategies will do little to enhance your chance of winning.

Even Richard Lustig, seven-time lottery winner who has written the book, "Learn How to Increase Your Chances of Winning the Lottery," says there is no sure-fire way to win.

"I don't guarantee or make promises to anybody that by following my method you're going to win the lottery," he previously told ABC News.

Read more: How One Man Became a Serial Lottery Winner

Lustig advises lottery ticket buyers to set a budget and not to overspend, thinking it will increase your chances of winning.

Read more: $100 Million Winners Share Lottery Success Stories

While the odds of winning the jackpot are one in over 175.2 million, the odds of winning any of the smaller prizes from $4 to $1 million are one in 31.85.

The $550 million prize has a cash option of $360.2 million, the estimated jackpot based on national sales up to the time of the drawing, according to the official Powerball website.

Kent Sievers/The Omaha World-Herald/AP Photo

Lotto Fever: Going After $500M Powerball Jackpot Watch Video

Powerball Fever: Where Will Your 500 Million Dollars go? Watch Video

Matthew Vea, an army reservist and programmer, created a website four years ago that has tracked some of the Mega Millions and Powerball numbers that have and have not been drawn.

With the bulging jackpot, Vea said he couldn't resist buying some tickets Tuesday night.

"I did a few quick picks, used some fortune cookies but also grabbed some numbers based on my site's number profiling," Vea said.

However, even Vea is realistic about his chances of winning.

"With true random odds at 1 in 175 million though, even having a 'strategy' isn't likely to make a difference," he said. "But it can sure make you more hopeful than just sticking your finger in the wind with a quick pick."

Lustig advises against using the "quick picks" or numbers picked by the lottery's computer, while Michael Shackleford, gaming mathematician and actuary who specializes in studying casino games, prefers it.

Still Shackleford, admits he has not purchased a lotto ticket in 25 years, "because it's a sucker's bet."

If you want to have a slightly smaller chance of sharing your winnings with others who chose the same numbers as you, he offers a few observations.

People often choose familiar numbers, including birthdays, which, if chosen, means you could share your winnings.

"Everyone was born in a month from one to 12 and days are one and 31, ignoring the late 30s and 40s. If someone were picking birthdays, they have a greater chance to split it with other birthday pickers," he said.

Shackleford has also said many people choose geometric progressions.

The most popular selection for a Quebec lottery drawing in January 2010 were numbers in multiples of seven.

In particular, 824 wagers chose 7, 14, 21, 28, 35, and 42. The second most popular selection, chosen by 424 wagers, was the consecutive numbers 1, 2, 3, 4, 5, and 6. The third most popular selection was the mysterious set of numbers in the television series, "Lost." According to the Quebec lottery, 377 wagers chose: 4, 8, 15, 16, 23 and 42.

Another consideration, Shackleford has said, is when to play the game.

"It's good for you when the jackpot increases but it also induces more people to play, increasing your chance of sharing it," he said.

But at an estimated $550 million, sharing might not be such a bad thing.

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Egypt assembly seeks to wrap up constitution

CAIRO (Reuters) - The assembly writing Egypt's constitution said it could wrap up a final draft later on Wednesday, a move the Muslim Brotherhood sees as a way out of a crisis over a decree by President Mohamed Mursi that protesters say gives him dictatorial powers.

But as Mursi's opponents staged a sixth day of protests in Tahrir Square, critics said the Islamist-dominated assembly's bid to finish the constitution quickly could make matters worse.

Two people have been killed and hundreds injured in countrywide protest set off by Mursi's decree.

The Brotherhood hopes to end the crisis by replacing Mursi's controversial decree with an entirely new constitution that would need to be approved in a popular referendum, a Brotherhood official told Reuters.

It is a gamble based on the Islamists' belief that they can mobilize enough voters to win the referendum: they have won all elections held since Hosni Mubarak was toppled from power.

But the move seemed likely to deepen divisions that are being exposed in the street.

The Muslim Brotherhood and its Islamist allies called for protests on Saturday in Tahrir Square, setting the stage for more confrontation with their opponents, who staged a mass rally there on Tuesday.

The constitution is one of the main reasons Mursi is at loggerheads with non-Islamist opponents. They are boycotting the 100-member constitutional assembly, saying the Islamists have tried to impose their vision for Egypt's future.

The assembly's legal legitimacy has been called into question by a series of court cases demanding its dissolution. Its popular legitimacy has been hit by the withdrawal of members including church representatives and liberals.

"We will start now and finish today, God willing," Hossam el-Gheriyani, the assembly speaker, said at the start of its latest session in Cairo, saying Thursday would be "a great day".

"If you are upset by the decree, nothing will stop it except a new constitution issued immediately," he said. Three other members of the assembly told Reuters there were plans to put the document to a vote on Thursday.

ENTRENCHING AUTHORITARIANISM

Just down the road from the meeting convened at the Shura Council, protesters were again clashing with riot police in Tahrir Square. Members of the assembly watched on television as they waited to go into session.

"The constitution is in its last phases and will be put to a referendum soon and God willing it will solve a lot of the problems in the street," said Talaat Marzouk, an assembly member from the Salafi Nour Party, as he watched the images.

But Wael Ghonim, a prominent activist whose online blogging helped ignite the anti-Mubarak uprising, said a constitution passed in such circumstances would "entrench authoritarianism".

The constitution is supposed to be the cornerstone of a new, democratic Egypt following Mubarak's three decades of autocratic rule. The assembly has been at work for six months. Mursi had extended its December 12 deadline by two months - extra time that Gheriyani said was not needed.

The constitution will determine the powers of the president and parliament and define the roles of the judiciary and a military establishment that had been at the heart of power for decades until Mubarak was toppled. It will also set out the role of Islamic law, or sharia.

The effort to conclude the text quickly marked an escalation, said Nathan Brown, a professor of political science at George Washington University in the United States.

"It may be regarded with hostility by a lot of state actors too, including the judiciary," he said.

Leading opposition and former Arab League chief figure Amr Moussa slammed the move. He walked out of the assembly earlier this month. "This is nonsensical and one of the steps that shouldn't be taken, given the background of anger and resentment to the current constitutional assembly," he told Reuters.

Once drafted, the constitution will go to Mursi for approval, and he must then put it to a referendum within 15 days, which could mean the vote would be held by mid-December.

COURTS DECLARE STRIKE

Deepening the crisis further on Wednesday, Egypt's Cassation and Appeals courts said they would suspend their work until the constitutional court rules on the decree.

The judiciary, largely unreformed since the popular uprising that unseated Mubarak, was seen as a major target in the decree issued last Thursday, which extended his powers and put his decisions temporarily beyond legal challenge.

"The president wants to create a new dictatorship," said 38-year-old Mohamed Sayyed Ahmed, an unemployed man, in Tahrir.

Showing the depth of distrust of Mursi in parts of the judiciary, a spokesman for the Supreme Constitutional Court, which earlier this year declared void the Islamist-led parliament, said it felt under attack by the president.

In a speech on Friday, Mursi praised the judiciary as a whole but referred to corrupt elements he aimed to weed out.

"The really sad thing that has pained the members of this court is when the president of the republic joined, in a painful surprise, the campaign of continuous attack on the Constitutional Court," said the spokesman Maher Samy.

Senior judges have been negotiating with Mursi about how to restrict his new powers.

Mursi's administration insists that his actions were aimed at breaking a political logjam to push Egypt more swiftly towards democracy, an assertion his opponents dismiss.

The West worries about turbulence in a nation that has a peace treaty with Israel and is now ruled by Islamists they long kept at arms length.

Trying to ease tensions with judges, Mursi said elements of his decree giving his decisions immunity applied only to matters of "sovereign" importance, a compromise suggested by the judges.

A constitution must be in place before a new parliament can be elected, and until that time Mursi holds both executive and legislative powers. An election could take place in early 2013.

(Additional reporting by Tom Perry and Marwa Awad; Writing by Edmund Blair and Tom Perry; Editing by Will Waterman and Giles Elgood)

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Football: Blues owner Yeung to go on trial

HONG KONG: Birmingham City owner Carson Yeung will go on trial in Hong Kong on Wednesday on charges of money laundering after the troubled tycoon failed in a bid to have the case postponed.

The former hairdresser was arrested and charged in June last year with five counts of "dealing with property known or believed to represent proceeds of an indictable offence".

The exact nature of the allegations are unknown, but are expected to become clearer when the 15-day trial begins at 09:30am (0130 GMT) at a district court in the southern Chinese city.

Prosecutors have said investigations revealed around HK$720 million ($92 million) passed through accounts connected to the 52-year-old businessman, who had been on bail pending the trial since he was charged.

Yeung has yet to enter a plea but his lawyers have previously said that he intends to fight the charges.

A district court last week rejected his bid to delay the hearing by six months on grounds that most of his assets have been frozen, which prevented him from hiring a legal team.

The case also stopped him from travelling to Britain last year to attend his duties at the debt-ridden English football club.

The district court granted him permission, only for the High Court to overturn the ruling and allow an appeal from prosecutors, who argued there was a risk he might not return to Hong Kong.

Yeung, who was little known prior to his emergence in English football, took control of the club in October 2009 in an £81 million ($130 million) takeover from David Sullivan and David Gold, now the co-owners of West Ham.

The club's fortunes however have gone downhill. They were relegated from the Premiership three months after winning the League Cup amid financial troubles.

Yeung has assured Birmingham City he will continue to support the club financially despite his legal troubles.

-AFP/ac

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IIT-Kanpur flushes rail bio-toilet plan

CHENNAI: Scientists of IIT-Kanpur have thrown the kitchen sink at a high-tech solution to a messy problem: How to keep the world's largest railway network clean and prevent corrosion of lines when train toilets unload waste directly on the tracks.

Bio-toilets developed by the Indian Railways and Defence Research and Development Organization have earned praise from Prime Minister Manmohan Singh, but IIT scientists say they are neither environment-friendly nor suitable for trains.

But Indian Railways, which has for several years been searching for a way to prevent spreading human excreta across the countryside and stop track corrosion, which costs it350 crore a year, is betting on the bio-toilets.

Officials say they tested the system extensively and, since January 2011, installed 436 bio-toilets on eight trains. The railways plans to install bio-toilets in all new coaches at a cost of 500 crore.

The bio-toilet uses 'cold-active' bacteria collected from Antarctica and other low temperature areas to treat waste, turning it into water and gas that are disinfected before being expelled from the train.

IIT-Kanpur studied the toilets when they were put on trial three years ago. "There is no magic bacteria that can treat waste fast enough for use in a train toilet," said Vinod Tare, professor, environmental engineering and management, IIT-Kanpur.

IIT-Kanpur and the Research Design and Standards Organisation developed a zero discharge toilet that the railways tried but rejected.

"Such toilets are suitable for houses not for trains because a large number of people will need to use them in a short span of time."

Tare said the whole project was based on misinformation. "With every flush untreated waste is expelled through different levels and finally on the tracks," he said.

But railways officials insist that they have fixed the problems with the system. "We have eliminated the drawbacks that IIT-Kanpur pointed out," Railway Board executive director (mechanical engineering) Shailendra Singh said. |

"We are using stronger bacteria and garbage tossed into the commode will not affect the functioning of the toilet."

A mild swipe of the bacteria on the sides of the toilet box is enough to clean the toilet once, but the railways will load several kilograms of the bacteria in each toilet box.

"The toilets will save a lot of money because they will reduce corrosion of railway tracks and the undercarriage of coaches need not need to be replaced often," said a senior official with Southern Railway, which operates the Chennai-Guwahati Express, which uses bio-toilets.

"We found more than 5 kg of gutka sachets when a box was opened during an overhaul," he said. "The garbage did not affect the bacteria and there was no odour."

The technology is effective, official said, but passengers will have to cooperate with the railways and display discipline akin to that expected of aircraft passengers. A page on bio-toilets posted on Indian Railways' website says passengers are expected not to use the toilet pan as a garbage bin.

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CDC: HIV spread high in young gay males

NEW YORK (AP) — Health officials say 1 in 5 new HIV infections occur in a tiny segment of the population — young men who are gay or bisexual.

The government on Tuesday released new numbers that spotlight how the spread of the AIDS virus is heavily concentrated in young males who have sex with other males. Only about a quarter of new infections in the 13-to-24 age group are from injecting drugs or heterosexual sex.

The Centers for Disease Control and Prevention said blacks represented more than half of new infections in youths. The estimates are based on 2010 figures.

Overall, new U.S. HIV infections have held steady at around 50,000 annually. About 12,000 are in teens and young adults, and most youth with HIV haven't been tested.

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Online:

CDC report: http://www.cdc.gov/vitalsigns

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Egypt Erupts Over Morsi's 'First Step for Tyranny'

Nov 27, 2012 1:33pm

Khalil Hamra/AP Photo

CAIRO – Waves of protesters poured into Cairo’s Tahrir Square today to protest the far-reaching constitutional declaration made by President Mohammed Morsi last week that has essentially granted him unchecked power.

Click here for images of the demonstrations in Tahrir Square.

The new declaration frees Morsi from judicial oversight and with no parliament currently in place, many said longtime dictator Hosni Mubarak had simply been substituted with another.

“This is the first step for tyranny, he’s trying to put all the power in his hands and this is against the constitution and the law,” said Hassan Gamal, a professor of orthopaedic surgery. “No exceptions for anybody. Mubarak was tyrant because of the exceptions. We’re not going to tolerate any exceptions anymore.”

Liberal groups had called for the mass protest against Morsi, many of which have long complained of Islamists’ strength in post-Mubarak Egypt, led by Morsi and the Muslim Brotherhood. Protesters today said they were afraid of the constitution being written by an Islamist-dominated constitutional assembly, which will be put to a referendum once finished.

“The Muslim Brotherhood, they say something and then do the opposite,” said English teacher Nadine Mustafa. “We are in the 21st century, we want democracy, we don’t want a pharaoh ruining the country. This is ridiculous.”

Morsi’s office published the seven-article declaration on Thursday, the second of which states that Morsi’s laws and decrees “are final and binding and cannot be appealed by any way or to any entity” until the constitution is approved and a parliament elected.

Violence immediately broke out with clashes between Morsi opponents, supporters and police leading to more than 500 injuries and at least three deaths. To prevent more violence, the Muslim Brotherhood on Monday night cancelled their own rallies planned for today, though supporters did turn out in Alexandria.

“He’s a president that was elected to office with no constitution, no parliament and no defined powers in the state. It’s an exceptional circumstance,” argued Muslim Brotherhood senior adviser Jihad Haddad, who accused Mubarak-appointed judges of blocking Morsi’s attempts to reform the country’s institutions.

Morsi’s office insisted that the powers are only temporary. Haddad said the declaration will only be valid until a draft of the constitution is submitted.

“[Morsi] tried to do this through the only available avenue and choice,” Haddad said. “It does terrify [Morsi opponents] because the only thing they can rely on is trust and that trust was given to us during the presidential elections.”

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Egyptians challenge Mursi in nationwide protests

CAIRO (Reuters) - Tens of thousands Egyptians protested on Tuesday against President Mohamed Mursi in one of the biggest rallies since Hosni Mubarak's overthrow, accusing the Islamist leader of seeking to impose a new era of autocracy.

Police fired tear gas at stone-throwing youths in streets near the main protest in Cairo's Tahrir Square, heart of the uprising that toppled Mubarak last year. Clashes between Mursi's opponents and supporters erupted in a city north of Cairo.

But violence could not overshadow the show of strength by the normally divided opponents of Islamists in power, posing Mursi with the biggest challenge in his five months in office.

"The people want to bring down the regime," protesters in Tahrir chanted, echoing slogans used in the 2011 revolt.

Protesters also turned out in Alexandria, Suez, Minya and other Nile Delta cities.

Tuesday's protest called by leftists, liberals and other groups deepened the worst crisis since the Muslim Brotherhood politician was elected in June, and exposed the deep divide between the newly empowered Islamists and their opponents.

A 52-year-old protester died after inhaling teargas in Cairo, the second death since Mursi last week issued a decree that expanded his powers and barred court challenges to his decisions.

Mursi's administration has defended the decree as an effort to speed up reforms and complete a democratic transformation.

But opponents say Mursi is behaving like a modern-day pharaoh, a jibe leveled at Mubarak. The United States, a benefactor to Egypt's military, has expressed concern about more turbulence in a country that has a peace treaty with Israel.

"We don't want a dictatorship again. The Mubarak regime was a dictatorship. We had a revolution to have justice and freedom," 32-year-old Ahmed Husseini said in Cairo.

The fractious ranks of Egypt's non-Islamist opposition have been united on the street by crisis, although they have yet to build an electoral machine to challenge well-organized Islamists, who have beaten their more secular-minded rivals at the ballot box in two elections held since Mubarak was ousted.

MISCALCULATION

"There are signs that over the last couple of days that Mursi and the Brotherhood realized their mistake," said Elijah Zarwan, a fellow with The European Council on Foreign Relations, adding the protests were "a very clear illustration of how much of a political miscalculation this was."

Mursi's move provoked a rebellion by judges and has battered confidence in an economy struggling after two years of turmoil. The president still has to implement unpopular measures to rein in Egypt's crushing budget deficit, action needed to finalize a deal for a $4.8 billion International Monetary Fund loan.

Some protesters have been camped out since Friday in Tahrir, and violence has flared around the country, including in a town north of Cairo where a Muslim Brotherhood youth was killed in clashes on Sunday. Hundreds have been injured.

Supporters and opponents of Mursi threw stones at each other and some hurled petrol bombs in the Delta city of el-Mahalla el-Kubra. Medical sources said almost 200 people were wounded.

"The main demand is to withdraw the constitutional declaration (decree). This is the point," said Amr Moussa, former Arab League chief and presidential candidate who has joined the new opposition coalition, the National Salvation Front. The group includes several top liberal politicians.

Some scholars from the prestigious al-Azhar mosque and university joined Tuesday's protest, showing that Mursi and his Brotherhood have alienated some more moderate Muslims. Members of Egypt's large Christian minority also joined in.

Mursi formally quit the Brotherhood on taking office, saying he would be a president for all Egyptians, but he is still a member of its Freedom and Justice Party.

The decree issued on Thursday expanded his powers and protected his decisions from judicial review until the election of a new parliament expected in the first half of 2013.

In Washington, White House spokesman Jay Carney urged demonstrators to behave peacefully.

"The current constitutional impasse is an internal Egyptian situation that can only be resolved by the Egyptian people, through peaceful democratic dialogue," he told reporters.

New York-based Human Rights Watch said the decree gives Mursi more power than the interim military junta from which he took over.

U.N. Secretary-General Ban Ki-moon told an Austrian paper he would encourage Mursi to resolve the issue by dialogue.

TENSIONS

Trying to ease tensions with judges, Mursi assured Egypt's highest judicial authority that elements of his decree giving his decisions immunity applied only to matters of "sovereign" importance. That should limit it to issues such as declaring war, but experts said there was room for interpretation.

In another step to avoid more confrontation, the Muslim Brotherhood cancelled plans for a rival mass rally in Cairo on Tuesday to support the decree. Violence has flared in Cairo in the past when both sides have taken to the streets.

But there has been no retreat on other elements of the decree, including a stipulation that the Islamist-dominated body writing a new constitution be protected from legal challenge.

"The decree must be cancelled and the constituent assembly should be reformed. All intellectuals have left it and now it is controlled by Islamists," said 50-year-old Noha Abol Fotouh.

With its popular legitimacy undermined by the withdrawal of most of its non-Islamist members, the assembly faces a series of court cases from plaintiffs who claim it was formed illegally.

Mursi issued the decree on November 22, a day after he won U.S. and international praise for brokering an end to eight days of violence between Israel and Hamas around the Gaza Strip.

Mursi's decree was seen as targeting in part a legal establishment still largely unreformed from Mubarak's era, when the Brotherhood was outlawed.

Though both Islamists and their opponents broadly agree that the judiciary needs reform, Mursi's rivals oppose his methods.

Rulings from an array of courts this year have dealt a series of blows to the Brotherhood, leading to the dissolution of the first constitutional assembly and the lower house of parliament elected a year ago. The Brotherhood dominated both.

The judiciary blocked an attempt by Mursi to reconvene the Brotherhood-led parliament after his election victory. It also stood in the way of his attempt to sack the prosecutor general, another Mubarak holdover, in October.

In his decree, Mursi gave himself the power to sack that prosecutor and appoint a new one. In open defiance of Mursi, some judges are refusing to acknowledge that step.

(Additional reporting by Tom Perry, Seham Eloraby, Marwa Awad and Yasmine Saleh in Cairo and Michael Shields in Vienna; Writing by Edmund Blair and Tom Perry; Editing by Anna Willard, David Stamp, Alastair Macdonald and Giles Elgood)

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Dow, S&P end lower but Apple boosts Nasdaq

NEW YORK: Strong gains by Apple, Facebook and other key tech stocks sent the Nasdaq exchange higher Monday while the Dow and S&P 500 sagged.

The US markets were generally feeble on the first session after a slow Thanksgiving holiday week, with the jury still out over how strong the crucial Black Friday holiday sales went for retailers.

The Dow Jones Industrial Average finished down 42.31 points (0.33 per cent) at 12,967.37.

The broad-market S&P 500 lost 2.86 (0.20 per cent) at 1,406.29, while the Nasdaq Composite rose 9.93 (0.33 per cent) to 2,976.78.

A pumped-up Facebook soared 8.1 per cent to $25.94 after analysts at longtime skeptics Bernstein Research gave the company a "like," setting a $33 target for the price.

That, combined with Apple's 3.2 per cent surge to $589.53, drove the Nasdaq's gain.

Retailers dependent on physical stores were mostly lower, with Walmart losing 0.4 per cent, Costco 1.7 per cent, and Target 2.6 per cent.

The first weekend of the holiday sales period, kicked off with last week's Black Friday shopping bonanza, was strong, businesses said, but many were reported concerned that consumer spending might not be sustained over the next month.

But online retailers were higher, Amazon gaining 1.6 per cent and eBay adding 4.9 per cent, after Friday's online sales topped $1 billion for the first time.

Among the Dow blue chips, Coca-Cola topped losers with a 1.5 per cent fall while Hewlett-Packard led a handful of gainers, adding 2.4 per cent.

Bond prices rose. The 10-year US Treasury yield dropped to 1.66 per cent from 1.69 per cent Friday, and the 30-year fell to 2.80 per cent from 2.83 per cent.

- AFP/fa

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Rajya Sabha logjam over FDI continues

NEW DELHI: The logjam in Parliament over FDI in multi-brand retail continued on Monday with opposition parties twice forcing adjournment of the Upper House.

The morning session started with chairman Hamid Ansari expressing the resolve of the House in fighting terrorism on the 4th anniversary of Mumbai attacks but had to be adjourned shortly as the BJP refused to relent.

The main Opposition accused the government of contempt of Parliament by deciding to introduce FDI in retail when it had given an assurance to the contrary in the House last year.

"The government had given an assurance on December 7, 2011, that it was going to suspend FDI in retail Now they are bringing it...this is contempt of Parliament,'' said senior leader Vankaiah Naidu amid slogan-shouting by other members.

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Bounce houses a party hit but kids' injuries soar

CHICAGO (AP) — They may be a big hit at kids' birthday parties, but inflatable bounce houses can be dangerous, with the number of injuries soaring in recent years, a nationwide study found.

Kids often crowd into bounce houses, and jumping up and down can send other children flying into the air, too.

The numbers suggest 30 U.S. children a day are treated in emergency rooms for broken bones, sprains, cuts and concussions from bounce house accidents. Most involve children falling inside or out of the inflated playthings, and many children get hurt when they collide with other bouncing kids.

The number of children aged 17 and younger who got emergency-room treatment for bounce house injuries has climbed along with the popularity of bounce houses — from fewer than 1,000 in 1995 to nearly 11,000 in 2010. That's a 15-fold increase, and a doubling just since 2008.

"I was surprised by the number, especially by the rapid increase in the number of injuries," said lead author Dr. Gary Smith, director of the Center for Injury Research and Policy at Nationwide Children's Hospital in Columbus, Ohio.

Amusement parks and fairs have bounce houses, and the playthings can also be rented or purchased for home use.

Smith and colleagues analyzed national surveillance data on ER treatment for nonfatal injuries linked with bounce houses, maintained by the U.S. Consumer Product Safety Commission. Their study was published online Monday in the journal Pediatrics.

Only about 3 percent of children were hospitalized, mostly for broken bones.

More than one-third of the injuries were in children aged 5 and younger. The safety commission recommends against letting children younger than 6 use full-size trampolines, and Smith said barring kids that young from even smaller, home-use bounce houses would make sense.

"There is no evidence that the size or location of an inflatable bouncer affects the injury risk," he said.

Other recommendations, often listed in manufacturers' instruction pamphlets, include not overloading bounce houses with too many kids and not allowing young children to bounce with much older, heavier kids or adults, said Laura Woodburn, a spokeswoman for the National Association of Amusement Ride Safety Officials.

The study didn't include deaths, but some accidents are fatal. Separate data from the product safety commission show four bounce house deaths from 2003 to 2007, all involving children striking their heads on a hard surface.

Several nonfatal accidents occurred last year when bounce houses collapsed or were lifted by high winds.

A group that issues voluntary industry standards says bounce houses should be supervised by trained operators and recommends that bouncers be prohibited from doing flips and purposefully colliding with others, the study authors noted.

Bounce house injuries are similar to those linked with trampolines, and the American Academy of Pediatrics has recommended against using trampolines at home. Policymakers should consider whether bounce houses warrant similar precautions, the authors said.

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Online:

Pediatrics: http://www.pediatrics.org

Trade group: http://www.naarso.com

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AP Medical Writer Lindsey Tanner can be reached at http://www.twitter.com/LindseyTanner

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