A new study has found that some types of condoms, including the ones made from a polymer that is supposed to last for more than three months, are more likely to fail when compared with latex condoms, the most commonly used type of condom in the world.
The study, which surveyed more than 300,000 men in 14 countries, also found that more than half of men reported that they were not sure if condoms worked or not after using them for the first time.
The report, published online this week in the Journal of Sexual Medicine, found that the more people know about the risks associated with condom use, the more likely they are to change their behavior, including by avoiding condoms altogether.
In addition to revealing some new insights into condom use habits, the study offers a look at how condoms have evolved in the past several decades and how they are still the best protection available.
“This study is an opportunity to revisit condom effectiveness, safety, and health claims for our favorite condoms,” said Dr. Daniel S. Gans, director of the Division of Reproductive Medicine at the University of California, San Francisco, who led the study.
“But the important thing here is to keep in mind that condoms are not perfect.”
A few years ago, Dr. Gens said, the world’s leading condom maker, Johnson & Johnson, released a video featuring a woman saying she had been wearing condoms for seven years and said that she had never felt a condom break.
But this new study, the first of its kind, finds that condoms have not always been as good as advertised.
“The biggest problem with condom effectiveness is that people aren’t aware of how they work,” said John Lipsitz, the lead author of the study and professor of medicine at the Massachusetts General Hospital.
“This is a really important issue because people think condoms are the only thing that they need.”
The researchers analyzed the use of a condom, a latex condom, and a polyurethane condom.
The polymer condoms, made from plastic or polyethylene, are designed to keep a person’s semen from getting on the inside of a woman’s vagina.
They also are made from polyvinyl chloride, a material that can become sticky and break when they are rubbed against the skin.
The researchers looked at a variety of studies about condoms, but the most widely used types were latex and polyuretha, which are made by using latex or polyurethanate as a protective coating, and polypropylene, a polymer made from nylon or polyester.
“We didn’t ask people what they used them for, we didn’t measure how long they lasted, we just asked people if they had ever used them,” said Lipsay.
“There are many things that we could ask about the safety and efficacy of condoms,” he said.
The condom study also looked at how condom use changed over time.
In addition to the new information, it looked at the use patterns of people who changed their habits after starting a new condom.
“In general, we found that condom use has not changed much since the 1970s,” said Sridharan Muralidharan, an associate professor at the School of Medicine at Baylor College of Medicine and lead author on the study, “But we have a lot more data from the past 30 years that we need to look at to see how condoms were used and how the industry is responding to the changing landscape of condom use.”
The study looked at people who had used the most common types of latex condoms from 1972 to 2005.
It also examined how people’s condom use varied over time, looking at changes in the number of people using latex condoms and in how long condoms have been on the market.
According to the study’s findings, condom use increased from 1976 to 2005, but that was only because more men started using them.
People who used condoms less frequently between 1976 and 2005 were more likely than people who used them more frequently to have changed their behavior.
The average time between using and not using a condom fell from eight months to just two years.
In the future, the researchers are planning to look into whether there are any other factors that could affect condom use over time that are more important to the overall health of people.
“It is really important that we find ways to change behavior,” said Muralidanharan.
“One thing that we found was that the longer the condom has been on market, the less likely it was to be worn again,” he added.
“People also say they feel safer if they use condoms regularly, but there are a lot of other things that are also involved that we really need to explore and understand.”
The research was funded by the National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the World Health Organization, the American College of Obstetricians and Gynecologists, the Centers for Disease Control and Prevention, the United States Department of Health and Human Services