Then the researchers analyzed the data from the 26 studies.
And even so, it will be months or years before researchers analyze all the data.
No matter how the researchers analyzed it, the results didn't change.
Researchers analyzed data on nearly 154,000 women followed for an average of seven years.
The researchers are still analyzing the results, to be published later this summer.
Researchers analyzed data from nine large studies, including three published since 2007, which followed participants for an average of six years.
Researchers then analyzed health status information collected after the women turned 70.
The researchers collected data on the subjects for a year, but have only analyzed information from the first 12 weeks so far.
Finally, the researchers analyzed the children's speech at age 3, using a standardized language test.
Also, the studies the researchers analyzed were done in the 1970's, when much more chlorine was allowed than now.